---
_id: '40785'
abstract:
- lang: eng
  text: 'Two concerns often arise simultaneously when applying linear estimation in
    communication systems: the computational complexity can be prohibitively high
    when the system size is large, and the performance may degrade dramatically when
    the presumed model is mismatched with the actual system. In this paper, we introduce
    a subspace expansion framework to jointly address these concerns, in which the
    observation is first projected onto a lower-dimensional subspace and then the
    solution of the projected problem is regularized. We discuss two projection methods
    based on eigensubspace and Krylov subspace expansions. We show that the Krylov
    subspace projection provides an economical solution to regularized linear estimation.
    We also compare different regularization methods, such as principal components
    and diagonal loading. We show that diagonal loading generally outperforms other
    alternatives and that Krylov subspace rank reduction can yield a regularization
    effect close to diagonal loading. Finally, we investigate the impact of preconditioning
    on the performance and complexity for mismatched modeling and propose a loaded
    preconditioner, which can reduce complexity as well as preserve the regularization
    effect. Under the proposed framework, various regularization schemes are studied
    and some guidelines for choosing the right scheme are provided.'
author:
- first_name: Jun
  full_name: Tong, Jun
  last_name: Tong
- first_name: Peter J.
  full_name: Schreier, Peter J.
  last_name: Schreier
citation:
  ama: Tong J, Schreier PJ. A unified framework for regularized linear estimation
    in communication systems. <i>Signal Process</i>. 2013;93(9):2671–2686. doi:<a
    href="https://doi.org/10.1016/j.sigpro.2013.03.002">10.1016/j.sigpro.2013.03.002</a>
  apa: Tong, J., &#38; Schreier, P. J. (2013). A unified framework for regularized
    linear estimation in communication systems. <i>Signal Process.</i>, <i>93</i>(9),
    2671–2686. <a href="https://doi.org/10.1016/j.sigpro.2013.03.002">https://doi.org/10.1016/j.sigpro.2013.03.002</a>
  bibtex: '@article{Tong_Schreier_2013, title={A unified framework for regularized
    linear estimation in communication systems}, volume={93}, DOI={<a href="https://doi.org/10.1016/j.sigpro.2013.03.002">10.1016/j.sigpro.2013.03.002</a>},
    number={9}, journal={Signal Process.}, author={Tong, Jun and Schreier, Peter J.},
    year={2013}, pages={2671–2686} }'
  chicago: 'Tong, Jun, and Peter J. Schreier. “A Unified Framework for Regularized
    Linear Estimation in Communication Systems.” <i>Signal Process.</i> 93, no. 9
    (2013): 2671–2686. <a href="https://doi.org/10.1016/j.sigpro.2013.03.002">https://doi.org/10.1016/j.sigpro.2013.03.002</a>.'
  ieee: 'J. Tong and P. J. Schreier, “A unified framework for regularized linear estimation
    in communication systems,” <i>Signal Process.</i>, vol. 93, no. 9, pp. 2671–2686,
    2013, doi: <a href="https://doi.org/10.1016/j.sigpro.2013.03.002">10.1016/j.sigpro.2013.03.002</a>.'
  mla: Tong, Jun, and Peter J. Schreier. “A Unified Framework for Regularized Linear
    Estimation in Communication Systems.” <i>Signal Process.</i>, vol. 93, no. 9,
    2013, pp. 2671–2686, doi:<a href="https://doi.org/10.1016/j.sigpro.2013.03.002">10.1016/j.sigpro.2013.03.002</a>.
  short: J. Tong, P.J. Schreier, Signal Process. 93 (2013) 2671–2686.
date_created: 2023-01-30T11:51:52Z
date_updated: 2023-01-30T12:00:02Z
department:
- _id: '263'
doi: 10.1016/j.sigpro.2013.03.002
intvolume: '        93'
issue: '9'
page: 2671–2686
publication: Signal Process.
status: public
title: A unified framework for regularized linear estimation in communication systems
type: journal_article
user_id: '43497'
volume: 93
year: '2013'
...
---
_id: '40781'
abstract:
- lang: eng
  text: This article is concerned with global asymptotic stability (GAS) of dynamical
    networks. The case when subsystems are integral input-to-state stable (iISS) has
    been recognized as notoriously difficult to deal with in the literature. In fact,
    the lack of energy dissipation for large input denies direct application of the
    small-gain argument for input-to-state stable (ISS) subsystems. Here for networks
    consisting of iISS subsystems it is demonstrated that a two-phase approach allows
    us to make use of the ISS small-gain argument by separating a trajectory into
    a transient and a subsequent convergence. In contrast to the previous iISS results,
    the two-phase approach immediately leads to a sufficient criterion for GAS of
    general nonlinear networks in a matrix-like form (order condition).
author:
- first_name: Hiroshi
  full_name: Ito, Hiroshi
  last_name: Ito
- first_name: Björn S.
  full_name: Rüffer, Björn S.
  last_name: Rüffer
citation:
  ama: 'Ito H, Rüffer BS. A Two-Phase Approach to Stability of Networks Given in iISS
    Framework: Utilization of a Matrix-Like Criterion. In: <i>Proc. IEEE American
    Contr. Conf.</i> ; 2013:4838–4843.'
  apa: 'Ito, H., &#38; Rüffer, B. S. (2013). A Two-Phase Approach to Stability of
    Networks Given in iISS Framework: Utilization of a Matrix-Like Criterion. <i>Proc.
    IEEE American Contr. Conf.</i>, 4838–4843.'
  bibtex: '@inproceedings{Ito_Rüffer_2013, title={A Two-Phase Approach to Stability
    of Networks Given in iISS Framework: Utilization of a Matrix-Like Criterion},
    booktitle={Proc. IEEE American Contr. Conf.}, author={Ito, Hiroshi and Rüffer,
    Björn S.}, year={2013}, pages={4838–4843} }'
  chicago: 'Ito, Hiroshi, and Björn S. Rüffer. “A Two-Phase Approach to Stability
    of Networks Given in IISS Framework: Utilization of a Matrix-Like Criterion.”
    In <i>Proc. IEEE American Contr. Conf.</i>, 4838–4843, 2013.'
  ieee: 'H. Ito and B. S. Rüffer, “A Two-Phase Approach to Stability of Networks Given
    in iISS Framework: Utilization of a Matrix-Like Criterion,” in <i>Proc. IEEE American
    Contr. Conf.</i>, 2013, pp. 4838–4843.'
  mla: 'Ito, Hiroshi, and Björn S. Rüffer. “A Two-Phase Approach to Stability of Networks
    Given in IISS Framework: Utilization of a Matrix-Like Criterion.” <i>Proc. IEEE
    American Contr. Conf.</i>, 2013, pp. 4838–4843.'
  short: 'H. Ito, B.S. Rüffer, in: Proc. IEEE American Contr. Conf., 2013, pp. 4838–4843.'
date_created: 2023-01-30T11:51:51Z
date_updated: 2023-01-30T11:59:51Z
department:
- _id: '263'
page: 4838–4843
publication: Proc. IEEE American Contr. Conf.
status: public
title: 'A Two-Phase Approach to Stability of Networks Given in iISS Framework: Utilization
  of a Matrix-Like Criterion'
type: conference
user_id: '43497'
year: '2013'
...
---
_id: '40782'
abstract:
- lang: eng
  text: Two similar stability notions are considered; one is the long established
    notion of convergent systems, the other is the younger notion of incremental stability.
    Both notions require that any two solutions of a system converge to each other.
    Yet these stability concepts are different, in the sense that none implies the
    other, as is shown in this paper using two examples. It is shown under what additional
    assumptions one property indeed implies the other. Furthermore, this paper contains
    necessary and sufficient characterizations of both properties in terms of Lyapunov
    functions.
author:
- first_name: Björn S.
  full_name: Rüffer, Björn S.
  last_name: Rüffer
- first_name: Nathan
  full_name: van de Wouw, Nathan
  last_name: van de Wouw
- first_name: Markus
  full_name: Mueller, Markus
  last_name: Mueller
citation:
  ama: Rüffer BS, van de Wouw N, Mueller M. Convergent Systems vs. Incremental Stability.
    <i>Systems Control Lett</i>. 2013;62:277–285. doi:<a href="https://doi.org/10.1016/j.sysconle.2012.11.015">10.1016/j.sysconle.2012.11.015</a>
  apa: Rüffer, B. S., van de Wouw, N., &#38; Mueller, M. (2013). Convergent Systems
    vs. Incremental Stability. <i>Systems Control Lett.</i>, <i>62</i>, 277–285. <a
    href="https://doi.org/10.1016/j.sysconle.2012.11.015">https://doi.org/10.1016/j.sysconle.2012.11.015</a>
  bibtex: '@article{Rüffer_van de Wouw_Mueller_2013, title={Convergent Systems vs.
    Incremental Stability}, volume={62}, DOI={<a href="https://doi.org/10.1016/j.sysconle.2012.11.015">10.1016/j.sysconle.2012.11.015</a>},
    journal={Systems Control Lett.}, author={Rüffer, Björn S. and van de Wouw, Nathan
    and Mueller, Markus}, year={2013}, pages={277–285} }'
  chicago: 'Rüffer, Björn S., Nathan van de Wouw, and Markus Mueller. “Convergent
    Systems vs. Incremental Stability.” <i>Systems Control Lett.</i> 62 (2013): 277–285.
    <a href="https://doi.org/10.1016/j.sysconle.2012.11.015">https://doi.org/10.1016/j.sysconle.2012.11.015</a>.'
  ieee: 'B. S. Rüffer, N. van de Wouw, and M. Mueller, “Convergent Systems vs. Incremental
    Stability,” <i>Systems Control Lett.</i>, vol. 62, pp. 277–285, 2013, doi: <a
    href="https://doi.org/10.1016/j.sysconle.2012.11.015">10.1016/j.sysconle.2012.11.015</a>.'
  mla: Rüffer, Björn S., et al. “Convergent Systems vs. Incremental Stability.” <i>Systems
    Control Lett.</i>, vol. 62, 2013, pp. 277–285, doi:<a href="https://doi.org/10.1016/j.sysconle.2012.11.015">10.1016/j.sysconle.2012.11.015</a>.
  short: B.S. Rüffer, N. van de Wouw, M. Mueller, Systems Control Lett. 62 (2013)
    277–285.
date_created: 2023-01-30T11:51:51Z
date_updated: 2023-01-30T11:59:49Z
department:
- _id: '263'
doi: 10.1016/j.sysconle.2012.11.015
intvolume: '        62'
page: 277–285
publication: Systems Control Lett.
status: public
title: Convergent Systems vs. Incremental Stability
type: journal_article
user_id: '43497'
volume: 62
year: '2013'
...
---
_id: '40779'
abstract:
- lang: eng
  text: This paper provides sufficient conditions for the incremental stability of
    time-delayed nonlinear systems. It relies on the Razumikhin-Lyapunov approach,
    which consists in invoking small-gain arguments by treating the delayed state
    as a feedback perturbation. The results are valid for multiple delays, as well
    as bounded time-varying delays. We provide conditions under which the limit solution
    of a time-delayed nonlinear system to a periodic (resp. constant) input is itself
    periodic and of the same period (resp. constant). As an illustration, a specific
    focus is given on a class of delayed Lur’e systems.
author:
- first_name: Antoine
  full_name: Chaillet, Antoine
  last_name: Chaillet
- first_name: Alexander
  full_name: Yu. Pogromsky, Alexander
  last_name: Yu. Pogromsky
- first_name: Björn S.
  full_name: Rüffer, Björn S.
  last_name: Rüffer
citation:
  ama: 'Chaillet A, Yu. Pogromsky A, Rüffer BS. A Razumikhin approach for the incremental
    stability of delayed nonlinear systems. In: <i>Proc. 52nd IEEE Conf. Decis. Control</i>.
    ; 2013:1596–1601.'
  apa: Chaillet, A., Yu. Pogromsky, A., &#38; Rüffer, B. S. (2013). A Razumikhin approach
    for the incremental stability of delayed nonlinear systems. <i>Proc. 52nd IEEE
    Conf. Decis. Control</i>, 1596–1601.
  bibtex: '@inproceedings{Chaillet_Yu. Pogromsky_Rüffer_2013, title={A Razumikhin
    approach for the incremental stability of delayed nonlinear systems}, booktitle={Proc.
    52nd IEEE Conf. Decis. Control}, author={Chaillet, Antoine and Yu. Pogromsky,
    Alexander and Rüffer, Björn S.}, year={2013}, pages={1596–1601} }'
  chicago: Chaillet, Antoine, Alexander Yu. Pogromsky, and Björn S. Rüffer. “A Razumikhin
    Approach for the Incremental Stability of Delayed Nonlinear Systems.” In <i>Proc.
    52nd IEEE Conf. Decis. Control</i>, 1596–1601, 2013.
  ieee: A. Chaillet, A. Yu. Pogromsky, and B. S. Rüffer, “A Razumikhin approach for
    the incremental stability of delayed nonlinear systems,” in <i>Proc. 52nd IEEE
    Conf. Decis. Control</i>, 2013, pp. 1596–1601.
  mla: Chaillet, Antoine, et al. “A Razumikhin Approach for the Incremental Stability
    of Delayed Nonlinear Systems.” <i>Proc. 52nd IEEE Conf. Decis. Control</i>, 2013,
    pp. 1596–1601.
  short: 'A. Chaillet, A. Yu. Pogromsky, B.S. Rüffer, in: Proc. 52nd IEEE Conf. Decis.
    Control, 2013, pp. 1596–1601.'
date_created: 2023-01-30T11:51:51Z
date_updated: 2023-01-30T11:59:47Z
department:
- _id: '263'
page: 1596–1601
publication: Proc. 52nd IEEE Conf. Decis. Control
status: public
title: A Razumikhin approach for the incremental stability of delayed nonlinear systems
type: conference
user_id: '43497'
year: '2013'
...
---
_id: '40780'
author:
- first_name: Eusebio
  full_name: Real, Eusebio
  last_name: Real
- first_name: Alma
  full_name: Eguizabal, Alma
  last_name: Eguizabal
- first_name: Alejandro
  full_name: Pontón, Alejandro
  last_name: Pontón
- first_name: Marta Calvo
  full_name: Díez, Marta Calvo
  last_name: Díez
- first_name: José Fernando
  full_name: Val-Bernal, José Fernando
  last_name: Val-Bernal
- first_name: Marta
  full_name: Mayorga, Marta
  last_name: Mayorga
- first_name: José M.
  full_name: Revuelta, José M.
  last_name: Revuelta
- first_name: José M.
  full_name: López-Higuera, José M.
  last_name: López-Higuera
- first_name: Olga M.
  full_name: Conde, Olga M.
  last_name: Conde
citation:
  ama: Real E, Eguizabal A, Pontón A, et al. Optical coherence tomography assessment
    of vessel wall degradation in thoracic aortic aneurysms. <i>J Biomed Opt</i>.
    2013;18(12):126003–126003. doi:<a href="https://doi.org/10.1117/1.JBO.18.12.126003">10.1117/1.JBO.18.12.126003</a>
  apa: Real, E., Eguizabal, A., Pontón, A., Díez, M. C., Val-Bernal, J. F., Mayorga,
    M., Revuelta, J. M., López-Higuera, J. M., &#38; Conde, O. M. (2013). Optical
    coherence tomography assessment of vessel wall degradation in thoracic aortic
    aneurysms. <i>J. Biomed. Opt.</i>, <i>18</i>(12), 126003–126003. <a href="https://doi.org/10.1117/1.JBO.18.12.126003">https://doi.org/10.1117/1.JBO.18.12.126003</a>
  bibtex: '@article{Real_Eguizabal_Pontón_Díez_Val-Bernal_Mayorga_Revuelta_López-Higuera_Conde_2013,
    title={Optical coherence tomography assessment of vessel wall degradation in thoracic
    aortic aneurysms}, volume={18}, DOI={<a href="https://doi.org/10.1117/1.JBO.18.12.126003">10.1117/1.JBO.18.12.126003</a>},
    number={12}, journal={J. Biomed. Opt.}, author={Real, Eusebio and Eguizabal, Alma
    and Pontón, Alejandro and Díez, Marta Calvo and Val-Bernal, José Fernando and
    Mayorga, Marta and Revuelta, José M. and López-Higuera, José M. and Conde, Olga
    M.}, year={2013}, pages={126003–126003} }'
  chicago: 'Real, Eusebio, Alma Eguizabal, Alejandro Pontón, Marta Calvo Díez, José
    Fernando Val-Bernal, Marta Mayorga, José M. Revuelta, José M. López-Higuera, and
    Olga M. Conde. “Optical Coherence Tomography Assessment of Vessel Wall Degradation
    in Thoracic Aortic Aneurysms.” <i>J. Biomed. Opt.</i> 18, no. 12 (2013): 126003–126003.
    <a href="https://doi.org/10.1117/1.JBO.18.12.126003">https://doi.org/10.1117/1.JBO.18.12.126003</a>.'
  ieee: 'E. Real <i>et al.</i>, “Optical coherence tomography assessment of vessel
    wall degradation in thoracic aortic aneurysms,” <i>J. Biomed. Opt.</i>, vol. 18,
    no. 12, pp. 126003–126003, 2013, doi: <a href="https://doi.org/10.1117/1.JBO.18.12.126003">10.1117/1.JBO.18.12.126003</a>.'
  mla: Real, Eusebio, et al. “Optical Coherence Tomography Assessment of Vessel Wall
    Degradation in Thoracic Aortic Aneurysms.” <i>J. Biomed. Opt.</i>, vol. 18, no.
    12, 2013, pp. 126003–126003, doi:<a href="https://doi.org/10.1117/1.JBO.18.12.126003">10.1117/1.JBO.18.12.126003</a>.
  short: E. Real, A. Eguizabal, A. Pontón, M.C. Díez, J.F. Val-Bernal, M. Mayorga,
    J.M. Revuelta, J.M. López-Higuera, O.M. Conde, J. Biomed. Opt. 18 (2013) 126003–126003.
date_created: 2023-01-30T11:51:51Z
date_updated: 2023-01-30T11:59:44Z
department:
- _id: '263'
doi: 10.1117/1.JBO.18.12.126003
intvolume: '        18'
issue: '12'
page: 126003–126003
publication: J. Biomed. Opt.
status: public
title: Optical coherence tomography assessment of vessel wall degradation in thoracic
  aortic aneurysms
type: journal_article
user_id: '43497'
volume: 18
year: '2013'
...
---
_id: '40778'
abstract:
- lang: eng
  text: Separable Lyapunov functions play vital roles, for example, in stability analysis
    of large-scale systems. A Lyapunov function is called max-separable if it can
    be decomposed into a maximum of functions with one-dimensional arguments. Similarly,
    it is called sum-separable if it is a sum of such functions. In this paper it
    is shown that for a monotone system on a compact state space, asymptotic stability
    implies existence of a max-separable Lyapunov function. We also construct two
    systems on a non-compact state space, for which a max-separable Lyapunov function
    does not exist. One of them has a sum-separable Lyapunov function. The other does
    not.
author:
- first_name: Anders
  full_name: Rantzer, Anders
  last_name: Rantzer
- first_name: Björn S.
  full_name: Rüffer, Björn S.
  last_name: Rüffer
- first_name: Gunther
  full_name: Dirr, Gunther
  last_name: Dirr
citation:
  ama: 'Rantzer A, Rüffer BS, Dirr G. Separable Lyapunov functions for monotone systems.
    In: <i>Proc. 52nd IEEE Conf. Decis. Control</i>. ; 2013:4590–4594.'
  apa: Rantzer, A., Rüffer, B. S., &#38; Dirr, G. (2013). Separable Lyapunov functions
    for monotone systems. <i>Proc. 52nd IEEE Conf. Decis. Control</i>, 4590–4594.
  bibtex: '@inproceedings{Rantzer_Rüffer_Dirr_2013, title={Separable Lyapunov functions
    for monotone systems}, booktitle={Proc. 52nd IEEE Conf. Decis. Control}, author={Rantzer,
    Anders and Rüffer, Björn S. and Dirr, Gunther}, year={2013}, pages={4590–4594}
    }'
  chicago: Rantzer, Anders, Björn S. Rüffer, and Gunther Dirr. “Separable Lyapunov
    Functions for Monotone Systems.” In <i>Proc. 52nd IEEE Conf. Decis. Control</i>,
    4590–4594, 2013.
  ieee: A. Rantzer, B. S. Rüffer, and G. Dirr, “Separable Lyapunov functions for monotone
    systems,” in <i>Proc. 52nd IEEE Conf. Decis. Control</i>, 2013, pp. 4590–4594.
  mla: Rantzer, Anders, et al. “Separable Lyapunov Functions for Monotone Systems.”
    <i>Proc. 52nd IEEE Conf. Decis. Control</i>, 2013, pp. 4590–4594.
  short: 'A. Rantzer, B.S. Rüffer, G. Dirr, in: Proc. 52nd IEEE Conf. Decis. Control,
    2013, pp. 4590–4594.'
date_created: 2023-01-30T11:51:51Z
date_updated: 2023-01-30T11:59:54Z
department:
- _id: '263'
page: 4590–4594
publication: Proc. 52nd IEEE Conf. Decis. Control
status: public
title: Separable Lyapunov functions for monotone systems
type: conference
user_id: '43497'
year: '2013'
...
---
_id: '40786'
author:
- first_name: Jun
  full_name: Tong, Jun
  last_name: Tong
- first_name: Peter J.
  full_name: Schreier, Peter J.
  last_name: Schreier
citation:
  ama: Tong J, Schreier PJ. Regularized Preconditioning for Krylov Subspace Equalization
    of OFDM Systems over Doubly Selective Channels. <i>IEEE Wireless Comm Lett</i>.
    2013;2(4):367–370. doi:<a href="https://doi.org/10.1109/WCL.2013.042313.130096">10.1109/WCL.2013.042313.130096</a>
  apa: Tong, J., &#38; Schreier, P. J. (2013). Regularized Preconditioning for Krylov
    Subspace Equalization of OFDM Systems over Doubly Selective Channels. <i>IEEE
    Wireless Comm. Lett.</i>, <i>2</i>(4), 367–370. <a href="https://doi.org/10.1109/WCL.2013.042313.130096">https://doi.org/10.1109/WCL.2013.042313.130096</a>
  bibtex: '@article{Tong_Schreier_2013, title={Regularized Preconditioning for Krylov
    Subspace Equalization of OFDM Systems over Doubly Selective Channels}, volume={2},
    DOI={<a href="https://doi.org/10.1109/WCL.2013.042313.130096">10.1109/WCL.2013.042313.130096</a>},
    number={4}, journal={IEEE Wireless Comm. Lett.}, author={Tong, Jun and Schreier,
    Peter J.}, year={2013}, pages={367–370} }'
  chicago: 'Tong, Jun, and Peter J. Schreier. “Regularized Preconditioning for Krylov
    Subspace Equalization of OFDM Systems over Doubly Selective Channels.” <i>IEEE
    Wireless Comm. Lett.</i> 2, no. 4 (2013): 367–370. <a href="https://doi.org/10.1109/WCL.2013.042313.130096">https://doi.org/10.1109/WCL.2013.042313.130096</a>.'
  ieee: 'J. Tong and P. J. Schreier, “Regularized Preconditioning for Krylov Subspace
    Equalization of OFDM Systems over Doubly Selective Channels,” <i>IEEE Wireless
    Comm. Lett.</i>, vol. 2, no. 4, pp. 367–370, 2013, doi: <a href="https://doi.org/10.1109/WCL.2013.042313.130096">10.1109/WCL.2013.042313.130096</a>.'
  mla: Tong, Jun, and Peter J. Schreier. “Regularized Preconditioning for Krylov Subspace
    Equalization of OFDM Systems over Doubly Selective Channels.” <i>IEEE Wireless
    Comm. Lett.</i>, vol. 2, no. 4, 2013, pp. 367–370, doi:<a href="https://doi.org/10.1109/WCL.2013.042313.130096">10.1109/WCL.2013.042313.130096</a>.
  short: J. Tong, P.J. Schreier, IEEE Wireless Comm. Lett. 2 (2013) 367–370.
date_created: 2023-01-30T11:51:52Z
date_updated: 2023-01-30T11:59:59Z
department:
- _id: '263'
doi: 10.1109/WCL.2013.042313.130096
intvolume: '         2'
issue: '4'
page: 367–370
publication: IEEE Wireless Comm. Lett.
status: public
title: Regularized Preconditioning for Krylov Subspace Equalization of OFDM Systems
  over Doubly Selective Channels
type: journal_article
user_id: '43497'
volume: 2
year: '2013'
...
---
_id: '40784'
author:
- first_name: Mario
  full_name: Castañeda, Mario
  last_name: Castañeda
- first_name: Manuel
  full_name: Stein, Manuel
  last_name: Stein
- first_name: Felix
  full_name: Antreich, Felix
  last_name: Antreich
- first_name: Emrah
  full_name: Tasdemir, Emrah
  last_name: Tasdemir
- first_name: Lothar
  full_name: Kurz, Lothar
  last_name: Kurz
- first_name: Tobias G.
  full_name: Noll, Tobias G.
  last_name: Noll
- first_name: Josef A.
  full_name: Nossek, Josef A.
  last_name: Nossek
citation:
  ama: 'Castañeda M, Stein M, Antreich F, et al. Joint space-time interference mitigation
    for embedded multi-antenna GNSS receivers. In: <i>ION GNSS+</i>. ; 2013.'
  apa: Castañeda, M., Stein, M., Antreich, F., Tasdemir, E., Kurz, L., Noll, T. G.,
    &#38; Nossek, J. A. (2013). Joint space-time interference mitigation for embedded
    multi-antenna GNSS receivers. <i>ION GNSS+</i>.
  bibtex: '@inproceedings{Castañeda_Stein_Antreich_Tasdemir_Kurz_Noll_Nossek_2013,
    place={Nashville, USA}, title={Joint space-time interference mitigation for embedded
    multi-antenna GNSS receivers}, booktitle={ION GNSS+}, author={Castañeda, Mario
    and Stein, Manuel and Antreich, Felix and Tasdemir, Emrah and Kurz, Lothar and
    Noll, Tobias G. and Nossek, Josef A.}, year={2013} }'
  chicago: Castañeda, Mario, Manuel Stein, Felix Antreich, Emrah Tasdemir, Lothar
    Kurz, Tobias G. Noll, and Josef A. Nossek. “Joint Space-Time Interference Mitigation
    for Embedded Multi-Antenna GNSS Receivers.” In <i>ION GNSS+</i>. Nashville, USA,
    2013.
  ieee: M. Castañeda <i>et al.</i>, “Joint space-time interference mitigation for
    embedded multi-antenna GNSS receivers,” 2013.
  mla: Castañeda, Mario, et al. “Joint Space-Time Interference Mitigation for Embedded
    Multi-Antenna GNSS Receivers.” <i>ION GNSS+</i>, 2013.
  short: 'M. Castañeda, M. Stein, F. Antreich, E. Tasdemir, L. Kurz, T.G. Noll, J.A.
    Nossek, in: ION GNSS+, Nashville, USA, 2013.'
date_created: 2023-01-30T11:51:52Z
date_updated: 2023-01-30T11:59:57Z
department:
- _id: '263'
place: Nashville, USA
publication: ION GNSS+
status: public
title: Joint space-time interference mitigation for embedded multi-antenna GNSS receivers
type: conference
user_id: '43497'
year: '2013'
...
---
_id: '40787'
abstract:
- lang: eng
  text: Breast tumors are blindly identified using Principal (PCA) and Independent
    Component Analysis (ICA) of localized reflectance measurements. No assumption
    of a particular theoretical model for the reflectance needs to be made, while
    the resulting features are proven to have discriminative power of breast pathologies.
    Normal, benign and malignant breast tissue types in lumpectomy specimens were
    imaged ex vivo and a surgeon-guided calibration of the system is proposed to overcome
    the limitations of the blind analysis. A simple, fast and linear classifier has
    been proposed where no training information is required for the diagnosis. A set
    of 29 breast tissue specimens have been diagnosed with a sensitivity of 96% and
    specificity of 95% when discriminating benign from malignant pathologies. The
    proposed hybrid combination PCA-ICA enhanced diagnostic discrimination, providing
    tumor probability maps, and intermediate PCA parameters reflected tissue optical
    properties.
author:
- first_name: Alma
  full_name: Eguizabal, Alma
  last_name: Eguizabal
- first_name: Ashley M.
  full_name: Laughney, Ashley M.
  last_name: Laughney
- first_name: P. Beatriz
  full_name: Garcia-Allende, P. Beatriz
  last_name: Garcia-Allende
- first_name: Venkataramanan
  full_name: Krishnaswamy, Venkataramanan
  last_name: Krishnaswamy
- first_name: Wendy A.
  full_name: Wells, Wendy A.
  last_name: Wells
- first_name: Keith D.
  full_name: Paulsen, Keith D.
  last_name: Paulsen
- first_name: Brian W.
  full_name: Pogue, Brian W.
  last_name: Pogue
- first_name: Jose M.
  full_name: Lopez-Higuera, Jose M.
  last_name: Lopez-Higuera
- first_name: Olga M.
  full_name: Conde, Olga M.
  last_name: Conde
citation:
  ama: Eguizabal A, Laughney AM, Garcia-Allende PB, et al. Direct identification of
    breast cancer pathologies using blind separation of label-free localized reflectance
    measurements. <i>Biomed Opt Express</i>. 2013;4(7):1104–1118. doi:<a href="https://doi.org/10.1364/BOE.4.001104">10.1364/BOE.4.001104</a>
  apa: Eguizabal, A., Laughney, A. M., Garcia-Allende, P. B., Krishnaswamy, V., Wells,
    W. A., Paulsen, K. D., Pogue, B. W., Lopez-Higuera, J. M., &#38; Conde, O. M.
    (2013). Direct identification of breast cancer pathologies using blind separation
    of label-free localized reflectance measurements. <i>Biomed. Opt. Express</i>,
    <i>4</i>(7), 1104–1118. <a href="https://doi.org/10.1364/BOE.4.001104">https://doi.org/10.1364/BOE.4.001104</a>
  bibtex: '@article{Eguizabal_Laughney_Garcia-Allende_Krishnaswamy_Wells_Paulsen_Pogue_Lopez-Higuera_Conde_2013,
    title={Direct identification of breast cancer pathologies using blind separation
    of label-free localized reflectance measurements}, volume={4}, DOI={<a href="https://doi.org/10.1364/BOE.4.001104">10.1364/BOE.4.001104</a>},
    number={7}, journal={Biomed. Opt. Express}, author={Eguizabal, Alma and Laughney,
    Ashley M. and Garcia-Allende, P. Beatriz and Krishnaswamy, Venkataramanan and
    Wells, Wendy A. and Paulsen, Keith D. and Pogue, Brian W. and Lopez-Higuera, Jose
    M. and Conde, Olga M.}, year={2013}, pages={1104–1118} }'
  chicago: 'Eguizabal, Alma, Ashley M. Laughney, P. Beatriz Garcia-Allende, Venkataramanan
    Krishnaswamy, Wendy A. Wells, Keith D. Paulsen, Brian W. Pogue, Jose M. Lopez-Higuera,
    and Olga M. Conde. “Direct Identification of Breast Cancer Pathologies Using Blind
    Separation of Label-Free Localized Reflectance Measurements.” <i>Biomed. Opt.
    Express</i> 4, no. 7 (2013): 1104–1118. <a href="https://doi.org/10.1364/BOE.4.001104">https://doi.org/10.1364/BOE.4.001104</a>.'
  ieee: 'A. Eguizabal <i>et al.</i>, “Direct identification of breast cancer pathologies
    using blind separation of label-free localized reflectance measurements,” <i>Biomed.
    Opt. Express</i>, vol. 4, no. 7, pp. 1104–1118, 2013, doi: <a href="https://doi.org/10.1364/BOE.4.001104">10.1364/BOE.4.001104</a>.'
  mla: Eguizabal, Alma, et al. “Direct Identification of Breast Cancer Pathologies
    Using Blind Separation of Label-Free Localized Reflectance Measurements.” <i>Biomed.
    Opt. Express</i>, vol. 4, no. 7, 2013, pp. 1104–1118, doi:<a href="https://doi.org/10.1364/BOE.4.001104">10.1364/BOE.4.001104</a>.
  short: A. Eguizabal, A.M. Laughney, P.B. Garcia-Allende, V. Krishnaswamy, W.A. Wells,
    K.D. Paulsen, B.W. Pogue, J.M. Lopez-Higuera, O.M. Conde, Biomed. Opt. Express
    4 (2013) 1104–1118.
date_created: 2023-01-30T11:51:52Z
date_updated: 2023-01-30T12:00:04Z
department:
- _id: '263'
doi: 10.1364/BOE.4.001104
intvolume: '         4'
issue: '7'
page: 1104–1118
publication: Biomed. Opt. Express
status: public
title: Direct identification of breast cancer pathologies using blind separation of
  label-free localized reflectance measurements
type: journal_article
user_id: '43497'
volume: 4
year: '2013'
...
---
_id: '40811'
abstract:
- lang: eng
  text: Deadwood moisture affects multiple functions of downed logs in forest ecosystems.
    They include provision of habitats for xylobionts, additional water stores and
    organic carbon stocks. In contrast to Northern American forests, little is known
    about moisture variability in downed logs of important tree species within the
    Temperate Zone of Europe. Therefore, our study aimed at elucidating this variability
    according to species, site and decay class (DC). Measurements were taken by TDR
    during two vegetation periods in eight Carpathian natural forests representing
    distinct site conditions, ranging from xerothermophilous to subalpine. Downed
    logs of \emphQuercus spp., \emph{Abies alba} Mill., \emph{Fagus sylvatica} L.,
    and \emph{Picea abies} L., belonging to various DCs, were selected and instrumented
    with TDR probes. Species and DC-specific TDR calibration showed the importance
    of intrinsic wood porosity. The course of deadwood moisture consisted of drying
    during the early decay stage, except for \emph{A. alba} and \emph{F. sylvatica},
    and an intense water reabsorption at later decay stages. Average moisture for
    all species and sites displayed seasonal trends, reflecting the occurrence of
    precipitation clusters and dry periods, as well as short-term fluctuations. Cross-spectral
    analysis revealed that both sapwood and heartwood participated in wetting and
    drying processes, but only after reaching an advanced stage of decay. New findings
    can be applied in interpreting, modelling and predicting deadwood water stores,
    habitat properties and respiration.
author:
- first_name: V.
  full_name: Pichler, V.
  last_name: Pichler
- first_name: M.
  full_name: Homolák, M.
  last_name: Homolák
- first_name: W.
  full_name: Skierucha, W.
  last_name: Skierucha
- first_name: M.
  full_name: Pichlerová, M.
  last_name: Pichlerová
- first_name: D.
  full_name: Ramírez, D.
  last_name: Ramírez
- first_name: J.
  full_name: Gregor, J.
  last_name: Gregor
- first_name: P.
  full_name: Jaloviar, P.
  last_name: Jaloviar
citation:
  ama: Pichler V, Homolák M, Skierucha W, et al. Variability of moisture in coarse
    woody debris from several ecologically important tree species of the Temperate
    Zone of Europe. <i>Ecohydrology</i>. 2012;5(4):424–434. doi:<a href="https://doi.org/10.1002/eco.235">10.1002/eco.235</a>
  apa: Pichler, V., Homolák, M., Skierucha, W., Pichlerová, M., Ramírez, D., Gregor,
    J., &#38; Jaloviar, P. (2012). Variability of moisture in coarse woody debris
    from several ecologically important tree species of the Temperate Zone of Europe.
    <i>Ecohydrology</i>, <i>5</i>(4), 424–434. <a href="https://doi.org/10.1002/eco.235">https://doi.org/10.1002/eco.235</a>
  bibtex: '@article{Pichler_Homolák_Skierucha_Pichlerová_Ramírez_Gregor_Jaloviar_2012,
    title={Variability of moisture in coarse woody debris from several ecologically
    important tree species of the Temperate Zone of Europe}, volume={5}, DOI={<a href="https://doi.org/10.1002/eco.235">10.1002/eco.235</a>},
    number={4}, journal={Ecohydrology}, author={Pichler, V. and Homolák, M. and Skierucha,
    W. and Pichlerová, M. and Ramírez, D. and Gregor, J. and Jaloviar, P.}, year={2012},
    pages={424–434} }'
  chicago: 'Pichler, V., M. Homolák, W. Skierucha, M. Pichlerová, D. Ramírez, J. Gregor,
    and P. Jaloviar. “Variability of Moisture in Coarse Woody Debris from Several
    Ecologically Important Tree Species of the Temperate Zone of Europe.” <i>Ecohydrology</i>
    5, no. 4 (2012): 424–434. <a href="https://doi.org/10.1002/eco.235">https://doi.org/10.1002/eco.235</a>.'
  ieee: 'V. Pichler <i>et al.</i>, “Variability of moisture in coarse woody debris
    from several ecologically important tree species of the Temperate Zone of Europe,”
    <i>Ecohydrology</i>, vol. 5, no. 4, pp. 424–434, 2012, doi: <a href="https://doi.org/10.1002/eco.235">10.1002/eco.235</a>.'
  mla: Pichler, V., et al. “Variability of Moisture in Coarse Woody Debris from Several
    Ecologically Important Tree Species of the Temperate Zone of Europe.” <i>Ecohydrology</i>,
    vol. 5, no. 4, 2012, pp. 424–434, doi:<a href="https://doi.org/10.1002/eco.235">10.1002/eco.235</a>.
  short: V. Pichler, M. Homolák, W. Skierucha, M. Pichlerová, D. Ramírez, J. Gregor,
    P. Jaloviar, Ecohydrology 5 (2012) 424–434.
date_created: 2023-01-30T11:51:56Z
date_updated: 2023-01-30T11:57:21Z
department:
- _id: '263'
doi: 10.1002/eco.235
intvolume: '         5'
issue: '4'
page: 424–434
publication: Ecohydrology
status: public
title: Variability of moisture in coarse woody debris from several ecologically important
  tree species of the Temperate Zone of Europe
type: journal_article
user_id: '43497'
volume: 5
year: '2012'
...
---
_id: '40812'
abstract:
- lang: eng
  text: Spectrum sensing has become one of the main components of a cognitive transmitter.
    Conventional detectors suffer from noise power uncertainties and multiantenna
    detectors have been proposed to overcome this difficulty, and to improve the detection
    performance. However, most of the proposed multiantenna detectors are based on
    non-optimal techniques, such as the generalized likelihood ratio test (GLRT),
    or even heuristic approaches that are not based on first principles. In this work,
    we derive the locally most powerful invariant test (LMPIT), that is, the optimal
    invariant detector for close hypotheses, or equivalently, for a low signal-to-noise
    ratio (SNR). The traditional approach, based on the distributions of the maximal
    invariant statistic, is avoided thanks to Wijsman’s theorem, which does not need
    these distributions. Our findings show that, in the low SNR regime, and in contrast
    to the GLRT, the additional spatial structure imposed by the signal model is irrelevant
    for optimal detection. Finally, we use Monte Carlo simulations to illustrate the
    good performance of the LMPIT.
author:
- first_name: D.
  full_name: Ramírez, D.
  last_name: Ramírez
- first_name: J.
  full_name: Iscar, J.
  last_name: Iscar
- first_name: J.
  full_name: Vía, J.
  last_name: Vía
- first_name: I.
  full_name: Santamaría, I.
  last_name: Santamaría
- first_name: L. L.
  full_name: Scharf, L. L.
  last_name: Scharf
citation:
  ama: 'Ramírez D, Iscar J, Vía J, Santamaría I, Scharf LL. The Locally Most Powerful
    Invariant Test for Detecting a rank-$P$ Gaussian Signal in White Noise. In: <i>Proc.\
    IEEE Sensor Array and Multichannel Signal Process. Work.</i> ; 2012. doi:<a href="https://doi.org/10.1109/SAM.2012.6250547">10.1109/SAM.2012.6250547</a>'
  apa: Ramírez, D., Iscar, J., Vía, J., Santamaría, I., &#38; Scharf, L. L. (2012).
    The Locally Most Powerful Invariant Test for Detecting a rank-$P$ Gaussian Signal
    in White Noise. <i>Proc.\ IEEE Sensor Array and Multichannel Signal Process. Work.</i>
    <a href="https://doi.org/10.1109/SAM.2012.6250547">https://doi.org/10.1109/SAM.2012.6250547</a>
  bibtex: '@inproceedings{Ramírez_Iscar_Vía_Santamaría_Scharf_2012, place={Hoboken,
    NJ, USA}, title={The Locally Most Powerful Invariant Test for Detecting a rank-$P$
    Gaussian Signal in White Noise}, DOI={<a href="https://doi.org/10.1109/SAM.2012.6250547">10.1109/SAM.2012.6250547</a>},
    booktitle={Proc.\ IEEE Sensor Array and Multichannel Signal Process. Work.}, author={Ramírez,
    D. and Iscar, J. and Vía, J. and Santamaría, I. and Scharf, L. L.}, year={2012}
    }'
  chicago: Ramírez, D., J. Iscar, J. Vía, I. Santamaría, and L. L. Scharf. “The Locally
    Most Powerful Invariant Test for Detecting a Rank-$P$ Gaussian Signal in White
    Noise.” In <i>Proc.\ IEEE Sensor Array and Multichannel Signal Process. Work.</i>
    Hoboken, NJ, USA, 2012. <a href="https://doi.org/10.1109/SAM.2012.6250547">https://doi.org/10.1109/SAM.2012.6250547</a>.
  ieee: 'D. Ramírez, J. Iscar, J. Vía, I. Santamaría, and L. L. Scharf, “The Locally
    Most Powerful Invariant Test for Detecting a rank-$P$ Gaussian Signal in White
    Noise,” 2012, doi: <a href="https://doi.org/10.1109/SAM.2012.6250547">10.1109/SAM.2012.6250547</a>.'
  mla: Ramírez, D., et al. “The Locally Most Powerful Invariant Test for Detecting
    a Rank-$P$ Gaussian Signal in White Noise.” <i>Proc.\ IEEE Sensor Array and Multichannel
    Signal Process. Work.</i>, 2012, doi:<a href="https://doi.org/10.1109/SAM.2012.6250547">10.1109/SAM.2012.6250547</a>.
  short: 'D. Ramírez, J. Iscar, J. Vía, I. Santamaría, L.L. Scharf, in: Proc.\ IEEE
    Sensor Array and Multichannel Signal Process. Work., Hoboken, NJ, USA, 2012.'
date_created: 2023-01-30T11:51:56Z
date_updated: 2023-01-30T11:57:19Z
department:
- _id: '263'
doi: 10.1109/SAM.2012.6250547
place: Hoboken, NJ, USA
publication: Proc.\ IEEE Sensor Array and Multichannel Signal Process. Work.
status: public
title: The Locally Most Powerful Invariant Test for Detecting a rank-$P$ Gaussian
  Signal in White Noise
type: conference
user_id: '43497'
year: '2012'
...
---
_id: '40820'
abstract:
- lang: eng
  text: An alternating optimization algorithm was recently proposed for the K-user
    multiple-input multiple-output (MIMO) interference channel. For flat-fading channels
    and feasible problems, this algorithm successfully aligns the interfering signals
    exploiting the spatial dimensions. In this paper, we consider the case in which
    all pairwise MIMO channels are frequency-selective (convolutive), and the users
    transmit broadband signals using a single-carrier scheme. Unlike the flat-fading
    case, for frequency-selective channels it is necessary to add a spectral mask
    in the frequency response of the precoders and decoders to avoid trivial solutions.
    We show in the paper that each step of the alternating minimization algorithm
    can be reformulated as a convex optimization problem in which the autocorrelation
    function of the precoders or decoders is obtained. Upon convergence, a final spectral
    factorization stage must be applied to obtain the precoders and decoders from
    their autocorrelation functions. Simulation results are provided to illustrate
    the performance of the proposed algorithm.
author:
- first_name: Christian
  full_name: Lameiro, Christian
  last_name: Lameiro
- first_name: Javier
  full_name: Vía, Javier
  last_name: Vía
- first_name: Ignacio
  full_name: Santamaría, Ignacio
  last_name: Santamaría
- first_name: Robert W.
  full_name: Heath Jr., Robert W.
  last_name: Heath Jr.
citation:
  ama: 'Lameiro C, Vía J, Santamaría I, Heath Jr. RW. Interference Leakage Minimization
    for Convolutive MIMO Interference Channels. In: <i>Proc.\ IEEE Int.\ Conf.\ Acoustics,
    Speech and Signal Process.</i> ; 2012. doi:<a href="https://doi.org/10.1109/ICASSP.2012.6288506">10.1109/ICASSP.2012.6288506</a>'
  apa: Lameiro, C., Vía, J., Santamaría, I., &#38; Heath Jr., R. W. (2012). Interference
    Leakage Minimization for Convolutive MIMO Interference Channels. <i>Proc.\ IEEE
    Int.\ Conf.\ Acoustics, Speech and Signal Process.</i> <a href="https://doi.org/10.1109/ICASSP.2012.6288506">https://doi.org/10.1109/ICASSP.2012.6288506</a>
  bibtex: '@inproceedings{Lameiro_Vía_Santamaría_Heath Jr._2012, place={Kyoto, Japan},
    title={Interference Leakage Minimization for Convolutive MIMO Interference Channels},
    DOI={<a href="https://doi.org/10.1109/ICASSP.2012.6288506">10.1109/ICASSP.2012.6288506</a>},
    booktitle={Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.}, author={Lameiro,
    Christian and Vía, Javier and Santamaría, Ignacio and Heath Jr., Robert W.}, year={2012}
    }'
  chicago: Lameiro, Christian, Javier Vía, Ignacio Santamaría, and Robert W. Heath
    Jr. “Interference Leakage Minimization for Convolutive MIMO Interference Channels.”
    In <i>Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.</i> Kyoto,
    Japan, 2012. <a href="https://doi.org/10.1109/ICASSP.2012.6288506">https://doi.org/10.1109/ICASSP.2012.6288506</a>.
  ieee: 'C. Lameiro, J. Vía, I. Santamaría, and R. W. Heath Jr., “Interference Leakage
    Minimization for Convolutive MIMO Interference Channels,” 2012, doi: <a href="https://doi.org/10.1109/ICASSP.2012.6288506">10.1109/ICASSP.2012.6288506</a>.'
  mla: Lameiro, Christian, et al. “Interference Leakage Minimization for Convolutive
    MIMO Interference Channels.” <i>Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and
    Signal Process.</i>, 2012, doi:<a href="https://doi.org/10.1109/ICASSP.2012.6288506">10.1109/ICASSP.2012.6288506</a>.
  short: 'C. Lameiro, J. Vía, I. Santamaría, R.W. Heath Jr., in: Proc.\ IEEE Int.\
    Conf.\ Acoustics, Speech and Signal Process., Kyoto, Japan, 2012.'
date_created: 2023-01-30T11:51:57Z
date_updated: 2023-01-30T11:57:36Z
department:
- _id: '263'
doi: 10.1109/ICASSP.2012.6288506
place: Kyoto, Japan
publication: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.
status: public
title: Interference Leakage Minimization for Convolutive MIMO Interference Channels
type: conference
user_id: '43497'
year: '2012'
...
---
_id: '40817'
abstract:
- lang: eng
  text: This paper studies large multiple-input multiple-output (MIMO) communication
    systems with linear precoding and reduced-rank Krylov subspace receivers. We design
    precoders and analyze their performance by exploiting large-dimensional random
    matrix theory. We first devise low-complexity precoding schemes that can improve
    performance of low-rank Krylov subspace receivers in the regime of high signal-to-noise
    ratio (SNR). We then introduce a potential theory-based method for analyzing the
    convergence behavior of the mean-squared error (MSE) for various transmission
    schemes. This method can be applied to a broader range of problems compared to
    previous analytical tools. The analysis reveals that the MSE decreases super exponentially
    with the rank of the receiver. Numerical examples show that the proposed precoders
    can outperform conventional precoders when low-rank Krylov subspace receivers
    are used, and that the performance of such receivers can be accurately predicted.
author:
- first_name: Jun
  full_name: Tong, Jun
  last_name: Tong
- first_name: Peter J.
  full_name: Schreier, Peter J.
  last_name: Schreier
- first_name: Steven R.
  full_name: Weller, Steven R.
  last_name: Weller
citation:
  ama: Tong J, Schreier PJ, Weller SR. Design and analysis of large MIMO systems with
    Krylov subspace receivers. <i>{IEEE} {T}rans\ {S}ignal\ {P}rocess</i>. 2012;60(5):2482–2493.
    doi:<a href="https://doi.org/10.1109/TSP.2012.2187287">10.1109/TSP.2012.2187287</a>
  apa: Tong, J., Schreier, P. J., &#38; Weller, S. R. (2012). Design and analysis
    of large MIMO systems with Krylov subspace receivers. <i>{IEEE} {T}rans.\ {S}ignal\
    {P}rocess.</i>, <i>60</i>(5), 2482–2493. <a href="https://doi.org/10.1109/TSP.2012.2187287">https://doi.org/10.1109/TSP.2012.2187287</a>
  bibtex: '@article{Tong_Schreier_Weller_2012, title={Design and analysis of large
    MIMO systems with Krylov subspace receivers}, volume={60}, DOI={<a href="https://doi.org/10.1109/TSP.2012.2187287">10.1109/TSP.2012.2187287</a>},
    number={5}, journal={{IEEE} {T}rans.\ {S}ignal\ {P}rocess.}, author={Tong, Jun
    and Schreier, Peter J. and Weller, Steven R.}, year={2012}, pages={2482–2493}
    }'
  chicago: 'Tong, Jun, Peter J. Schreier, and Steven R. Weller. “Design and Analysis
    of Large MIMO Systems with Krylov Subspace Receivers.” <i>{IEEE} {T}rans.\ {S}ignal\
    {P}rocess.</i> 60, no. 5 (2012): 2482–2493. <a href="https://doi.org/10.1109/TSP.2012.2187287">https://doi.org/10.1109/TSP.2012.2187287</a>.'
  ieee: 'J. Tong, P. J. Schreier, and S. R. Weller, “Design and analysis of large
    MIMO systems with Krylov subspace receivers,” <i>{IEEE} {T}rans.\ {S}ignal\ {P}rocess.</i>,
    vol. 60, no. 5, pp. 2482–2493, 2012, doi: <a href="https://doi.org/10.1109/TSP.2012.2187287">10.1109/TSP.2012.2187287</a>.'
  mla: Tong, Jun, et al. “Design and Analysis of Large MIMO Systems with Krylov Subspace
    Receivers.” <i>{IEEE} {T}rans.\ {S}ignal\ {P}rocess.</i>, vol. 60, no. 5, 2012,
    pp. 2482–2493, doi:<a href="https://doi.org/10.1109/TSP.2012.2187287">10.1109/TSP.2012.2187287</a>.
  short: J. Tong, P.J. Schreier, S.R. Weller, {IEEE} {T}rans.\ {S}ignal\ {P}rocess.
    60 (2012) 2482–2493.
date_created: 2023-01-30T11:51:57Z
date_updated: 2023-01-30T11:57:34Z
department:
- _id: '263'
doi: 10.1109/TSP.2012.2187287
intvolume: '        60'
issue: '5'
page: 2482–2493
publication: '{IEEE} {T}rans.\ {S}ignal\ {P}rocess.'
status: public
title: Design and analysis of large MIMO systems with Krylov subspace receivers
type: journal_article
user_id: '43497'
volume: 60
year: '2012'
...
---
_id: '40819'
abstract:
- lang: eng
  text: Spectrum sensing is a key component of the cognitive radio (CR) paradigm.
    Among CR detectors, multiantenna detectors are gaining popularity since they improve
    the detection performance and are robust to noise uncertainties. Traditional approaches
    to multiantenna spectrum sensing are based on the generalized likelihood ratio
    test (GLRT) or other heuristic detectors, which are not optimal in the Neyman-Pearson
    sense. In this work, we derive the locally most powerful invariant test (LMPIT),
    which is the optimal detector, among those preserving the problem invariances,
    in the low SNR regime. In particular, we apply Wijsman’s theorem, which provides
    us an alternative way to derive the ratio of the distributions of the maximal
    invariant statistic. Finally, numerical simulations illustrate the performance
    of the proposed detector.
author:
- first_name: D.
  full_name: Ramírez, D.
  last_name: Ramírez
- first_name: J.
  full_name: Vía, J.
  last_name: Vía
- first_name: I.
  full_name: Santamaría, I.
  last_name: Santamaría
citation:
  ama: 'Ramírez D, Vía J, Santamaría I. The Locally Most Powerful Test For Multiantenna
    Spectrum Sensing With Uncalibrated Receivers. In: <i>Proc.\ IEEE Int.\ Conf.\
    Acoustics, Speech and Signal Process.</i> ; 2012. doi:<a href="https://doi.org/10.1109/ICASSP.2012.6288655">10.1109/ICASSP.2012.6288655</a>'
  apa: Ramírez, D., Vía, J., &#38; Santamaría, I. (2012). The Locally Most Powerful
    Test For Multiantenna Spectrum Sensing With Uncalibrated Receivers. <i>Proc.\
    IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.</i> <a href="https://doi.org/10.1109/ICASSP.2012.6288655">https://doi.org/10.1109/ICASSP.2012.6288655</a>
  bibtex: '@inproceedings{Ramírez_Vía_Santamaría_2012, place={Kyoto, Japan}, title={The
    Locally Most Powerful Test For Multiantenna Spectrum Sensing With Uncalibrated
    Receivers}, DOI={<a href="https://doi.org/10.1109/ICASSP.2012.6288655">10.1109/ICASSP.2012.6288655</a>},
    booktitle={Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.}, author={Ramírez,
    D. and Vía, J. and Santamaría, I.}, year={2012} }'
  chicago: Ramírez, D., J. Vía, and I. Santamaría. “The Locally Most Powerful Test
    For Multiantenna Spectrum Sensing With Uncalibrated Receivers.” In <i>Proc.\ IEEE
    Int.\ Conf.\ Acoustics, Speech and Signal Process.</i> Kyoto, Japan, 2012. <a
    href="https://doi.org/10.1109/ICASSP.2012.6288655">https://doi.org/10.1109/ICASSP.2012.6288655</a>.
  ieee: 'D. Ramírez, J. Vía, and I. Santamaría, “The Locally Most Powerful Test For
    Multiantenna Spectrum Sensing With Uncalibrated Receivers,” 2012, doi: <a href="https://doi.org/10.1109/ICASSP.2012.6288655">10.1109/ICASSP.2012.6288655</a>.'
  mla: Ramírez, D., et al. “The Locally Most Powerful Test For Multiantenna Spectrum
    Sensing With Uncalibrated Receivers.” <i>Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech
    and Signal Process.</i>, 2012, doi:<a href="https://doi.org/10.1109/ICASSP.2012.6288655">10.1109/ICASSP.2012.6288655</a>.
  short: 'D. Ramírez, J. Vía, I. Santamaría, in: Proc.\ IEEE Int.\ Conf.\ Acoustics,
    Speech and Signal Process., Kyoto, Japan, 2012.'
date_created: 2023-01-30T11:51:57Z
date_updated: 2023-01-30T11:57:32Z
department:
- _id: '263'
doi: 10.1109/ICASSP.2012.6288655
place: Kyoto, Japan
publication: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.
status: public
title: The Locally Most Powerful Test For Multiantenna Spectrum Sensing With Uncalibrated
  Receivers
type: conference
user_id: '43497'
year: '2012'
...
---
_id: '40821'
abstract:
- lang: eng
  text: This paper deals with different techniques for linear equalization (LE) of
    multipath channels with imperfect channel estimation (CE). We develop a unified
    framework based on Krylov subspace expansion, which allows us to compare the performance
    of the conjugate gradient (CG) method, diagonal loading (DL), and a hybrid scheme.
    Our analysis shows that the DL method generally outperforms its alternatives,
    but at the cost of higher complexity. However, we also demonstrate that a proper
    implementation of the low-complexity CG method can also approach the performance
    of DL. Finally, we show that preconditioning degrades performance when the CE
    is poor.
author:
- first_name: Jun
  full_name: Tong, Jun
  last_name: Tong
- first_name: Peter J.
  full_name: Schreier, Peter J.
  last_name: Schreier
citation:
  ama: 'Tong J, Schreier PJ. Regularized linear equalization for multipath channels
    with imperfect channel estimation. In: <i>Proc.\ IEEE Int.\ Conf.\ Acoustics,
    Speech and Signal Process.</i> ; 2012:3009–3012. doi:<a href="https://doi.org/10.1109/ICASSP.2012.6288548">10.1109/ICASSP.2012.6288548</a>'
  apa: Tong, J., &#38; Schreier, P. J. (2012). Regularized linear equalization for
    multipath channels with imperfect channel estimation. <i>Proc.\ IEEE Int.\ Conf.\
    Acoustics, Speech and Signal Process.</i>, 3009–3012. <a href="https://doi.org/10.1109/ICASSP.2012.6288548">https://doi.org/10.1109/ICASSP.2012.6288548</a>
  bibtex: '@inproceedings{Tong_Schreier_2012, title={Regularized linear equalization
    for multipath channels with imperfect channel estimation}, DOI={<a href="https://doi.org/10.1109/ICASSP.2012.6288548">10.1109/ICASSP.2012.6288548</a>},
    booktitle={Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.}, author={Tong,
    Jun and Schreier, Peter J.}, year={2012}, pages={3009–3012} }'
  chicago: Tong, Jun, and Peter J. Schreier. “Regularized Linear Equalization for
    Multipath Channels with Imperfect Channel Estimation.” In <i>Proc.\ IEEE Int.\
    Conf.\ Acoustics, Speech and Signal Process.</i>, 3009–3012, 2012. <a href="https://doi.org/10.1109/ICASSP.2012.6288548">https://doi.org/10.1109/ICASSP.2012.6288548</a>.
  ieee: 'J. Tong and P. J. Schreier, “Regularized linear equalization for multipath
    channels with imperfect channel estimation,” in <i>Proc.\ IEEE Int.\ Conf.\ Acoustics,
    Speech and Signal Process.</i>, 2012, pp. 3009–3012, doi: <a href="https://doi.org/10.1109/ICASSP.2012.6288548">10.1109/ICASSP.2012.6288548</a>.'
  mla: Tong, Jun, and Peter J. Schreier. “Regularized Linear Equalization for Multipath
    Channels with Imperfect Channel Estimation.” <i>Proc.\ IEEE Int.\ Conf.\ Acoustics,
    Speech and Signal Process.</i>, 2012, pp. 3009–3012, doi:<a href="https://doi.org/10.1109/ICASSP.2012.6288548">10.1109/ICASSP.2012.6288548</a>.
  short: 'J. Tong, P.J. Schreier, in: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and
    Signal Process., 2012, pp. 3009–3012.'
date_created: 2023-01-30T11:51:57Z
date_updated: 2023-01-30T11:57:29Z
department:
- _id: '263'
doi: 10.1109/ICASSP.2012.6288548
page: 3009–3012
publication: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.
status: public
title: Regularized linear equalization for multipath channels with imperfect channel
  estimation
type: conference
user_id: '43497'
year: '2012'
...
---
_id: '40823'
author:
- first_name: Alma
  full_name: Eguizabal, Alma
  last_name: Eguizabal
- first_name: Ashley M.
  full_name: Laughney, Ashley M.
  last_name: Laughney
- first_name: P. Beatriz
  full_name: Garcia-Allende, P. Beatriz
  last_name: Garcia-Allende
- first_name: Venkataramanan
  full_name: Krishnaswamy, Venkataramanan
  last_name: Krishnaswamy
- first_name: Wendy A.
  full_name: Wells, Wendy A.
  last_name: Wells
- first_name: Keith D.
  full_name: Paulsen, Keith D.
  last_name: Paulsen
- first_name: Brian W.
  full_name: Pogue, Brian W.
  last_name: Pogue
- first_name: Jose
  full_name: Lopez-Higuera, Jose
  last_name: Lopez-Higuera
- first_name: Olga M.
  full_name: Conde, Olga M.
  last_name: Conde
citation:
  ama: 'Eguizabal A, Laughney AM, Garcia-Allende PB, et al. Enhanced tumor contrast
    during breast lumpectomy provided by independent component analysis of localized
    reflectance measures. In: <i>SPIE Photonics West 2012-BIOS, VI Biomedical Applications
    of Light Scattering</i>. ; 2012.'
  apa: Eguizabal, A., Laughney, A. M., Garcia-Allende, P. B., Krishnaswamy, V., Wells,
    W. A., Paulsen, K. D., Pogue, B. W., Lopez-Higuera, J., &#38; Conde, O. M. (2012).
    Enhanced tumor contrast during breast lumpectomy provided by independent component
    analysis of localized reflectance measures. <i>SPIE Photonics West 2012-BIOS,
    VI Biomedical Applications of Light Scattering</i>.
  bibtex: '@inproceedings{Eguizabal_Laughney_Garcia-Allende_Krishnaswamy_Wells_Paulsen_Pogue_Lopez-Higuera_Conde_2012,
    place={San Francisco, USA}, title={Enhanced tumor contrast during breast lumpectomy
    provided by independent component analysis of localized reflectance measures},
    booktitle={SPIE Photonics West 2012-BIOS, VI Biomedical Applications of Light
    Scattering}, author={Eguizabal, Alma and Laughney, Ashley M. and Garcia-Allende,
    P. Beatriz and Krishnaswamy, Venkataramanan and Wells, Wendy A. and Paulsen, Keith
    D. and Pogue, Brian W. and Lopez-Higuera, Jose and Conde, Olga M.}, year={2012}
    }'
  chicago: Eguizabal, Alma, Ashley M. Laughney, P. Beatriz Garcia-Allende, Venkataramanan
    Krishnaswamy, Wendy A. Wells, Keith D. Paulsen, Brian W. Pogue, Jose Lopez-Higuera,
    and Olga M. Conde. “Enhanced Tumor Contrast during Breast Lumpectomy Provided
    by Independent Component Analysis of Localized Reflectance Measures.” In <i>SPIE
    Photonics West 2012-BIOS, VI Biomedical Applications of Light Scattering</i>.
    San Francisco, USA, 2012.
  ieee: A. Eguizabal <i>et al.</i>, “Enhanced tumor contrast during breast lumpectomy
    provided by independent component analysis of localized reflectance measures,”
    2012.
  mla: Eguizabal, Alma, et al. “Enhanced Tumor Contrast during Breast Lumpectomy Provided
    by Independent Component Analysis of Localized Reflectance Measures.” <i>SPIE
    Photonics West 2012-BIOS, VI Biomedical Applications of Light Scattering</i>,
    2012.
  short: 'A. Eguizabal, A.M. Laughney, P.B. Garcia-Allende, V. Krishnaswamy, W.A.
    Wells, K.D. Paulsen, B.W. Pogue, J. Lopez-Higuera, O.M. Conde, in: SPIE Photonics
    West 2012-BIOS, VI Biomedical Applications of Light Scattering, San Francisco,
    USA, 2012.'
date_created: 2023-01-30T11:51:57Z
date_updated: 2023-01-30T11:57:27Z
department:
- _id: '263'
place: San Francisco, USA
publication: SPIE Photonics West 2012-BIOS, VI Biomedical Applications of Light Scattering
status: public
title: Enhanced tumor contrast during breast lumpectomy provided by independent component
  analysis of localized reflectance measures
type: conference
user_id: '43497'
year: '2012'
...
---
_id: '40822'
author:
- first_name: Alma
  full_name: Eguizabal, Alma
  last_name: Eguizabal
- first_name: Ashley M.
  full_name: Laughney, Ashley M.
  last_name: Laughney
- first_name: P. Beatriz
  full_name: Garcia-Allende, P. Beatriz
  last_name: Garcia-Allende
- first_name: Venkataramanan
  full_name: Krishnaswamy, Venkataramanan
  last_name: Krishnaswamy
- first_name: Wendy A.
  full_name: Wells, Wendy A.
  last_name: Wells
- first_name: Keith D.
  full_name: Paulsen, Keith D.
  last_name: Paulsen
- first_name: Brian W.
  full_name: Pogue, Brian W.
  last_name: Pogue
- first_name: Jose
  full_name: Lopez-Higuera, Jose
  last_name: Lopez-Higuera
- first_name: Olga M.
  full_name: Conde, Olga M.
  last_name: Conde
citation:
  ama: 'Eguizabal A, Laughney AM, Garcia-Allende PB, et al. Blind breast tissue diagnosis
    using independent component analysis of localized backscattering response. In:
    <i>SPIE Photonics West BIOS, VI Biomedical Applications of Light Scattering</i>.
    ; 2012.'
  apa: Eguizabal, A., Laughney, A. M., Garcia-Allende, P. B., Krishnaswamy, V., Wells,
    W. A., Paulsen, K. D., Pogue, B. W., Lopez-Higuera, J., &#38; Conde, O. M. (2012).
    Blind breast tissue diagnosis using independent component analysis of localized
    backscattering response. <i>SPIE Photonics West BIOS, VI Biomedical Applications
    of Light Scattering</i>.
  bibtex: '@inproceedings{Eguizabal_Laughney_Garcia-Allende_Krishnaswamy_Wells_Paulsen_Pogue_Lopez-Higuera_Conde_2012,
    place={San Francisco, USA}, title={Blind breast tissue diagnosis using independent
    component analysis of localized backscattering response}, booktitle={SPIE Photonics
    West BIOS, VI Biomedical Applications of Light Scattering}, author={Eguizabal,
    Alma and Laughney, Ashley M. and Garcia-Allende, P. Beatriz and Krishnaswamy,
    Venkataramanan and Wells, Wendy A. and Paulsen, Keith D. and Pogue, Brian W. and
    Lopez-Higuera, Jose and Conde, Olga M.}, year={2012} }'
  chicago: Eguizabal, Alma, Ashley M. Laughney, P. Beatriz Garcia-Allende, Venkataramanan
    Krishnaswamy, Wendy A. Wells, Keith D. Paulsen, Brian W. Pogue, Jose Lopez-Higuera,
    and Olga M. Conde. “Blind Breast Tissue Diagnosis Using Independent Component
    Analysis of Localized Backscattering Response.” In <i>SPIE Photonics West BIOS,
    VI Biomedical Applications of Light Scattering</i>. San Francisco, USA, 2012.
  ieee: A. Eguizabal <i>et al.</i>, “Blind breast tissue diagnosis using independent
    component analysis of localized backscattering response,” 2012.
  mla: Eguizabal, Alma, et al. “Blind Breast Tissue Diagnosis Using Independent Component
    Analysis of Localized Backscattering Response.” <i>SPIE Photonics West BIOS, VI
    Biomedical Applications of Light Scattering</i>, 2012.
  short: 'A. Eguizabal, A.M. Laughney, P.B. Garcia-Allende, V. Krishnaswamy, W.A.
    Wells, K.D. Paulsen, B.W. Pogue, J. Lopez-Higuera, O.M. Conde, in: SPIE Photonics
    West BIOS, VI Biomedical Applications of Light Scattering, San Francisco, USA,
    2012.'
date_created: 2023-01-30T11:51:57Z
date_updated: 2023-01-30T11:57:25Z
department:
- _id: '263'
place: San Francisco, USA
publication: SPIE Photonics West BIOS, VI Biomedical Applications of Light Scattering
status: public
title: Blind breast tissue diagnosis using independent component analysis of localized
  backscattering response
type: conference
user_id: '43497'
year: '2012'
...
---
_id: '40818'
author:
- first_name: Christoph
  full_name: Enneking, Christoph
  last_name: Enneking
- first_name: Manuel
  full_name: Stein, Manuel
  last_name: Stein
- first_name: Mario
  full_name: Castañeda, Mario
  last_name: Castañeda
- first_name: Felix
  full_name: Antreich, Felix
  last_name: Antreich
- first_name: Josef A.
  full_name: Nossek, Josef A.
  last_name: Nossek
citation:
  ama: 'Enneking C, Stein M, Castañeda M, Antreich F, Nossek JA. Multi-Satellite Time-Delay
    Estimation for Reliable High-Resolution GNSS Receivers. In: <i>Proceedings of
    IEEE/ION PLANS 2012</i>. ; 2012.'
  apa: Enneking, C., Stein, M., Castañeda, M., Antreich, F., &#38; Nossek, J. A. (2012).
    Multi-Satellite Time-Delay Estimation for Reliable High-Resolution GNSS Receivers.
    <i>Proceedings of IEEE/ION PLANS 2012</i>.
  bibtex: '@inproceedings{Enneking_Stein_Castañeda_Antreich_Nossek_2012, place={Myrtle
    Beach, USA}, title={Multi-Satellite Time-Delay Estimation for Reliable High-Resolution
    GNSS Receivers}, booktitle={Proceedings of IEEE/ION PLANS 2012}, author={Enneking,
    Christoph and Stein, Manuel and Castañeda, Mario and Antreich, Felix and Nossek,
    Josef A.}, year={2012} }'
  chicago: Enneking, Christoph, Manuel Stein, Mario Castañeda, Felix Antreich, and
    Josef A. Nossek. “Multi-Satellite Time-Delay Estimation for Reliable High-Resolution
    GNSS Receivers.” In <i>Proceedings of IEEE/ION PLANS 2012</i>. Myrtle Beach, USA,
    2012.
  ieee: C. Enneking, M. Stein, M. Castañeda, F. Antreich, and J. A. Nossek, “Multi-Satellite
    Time-Delay Estimation for Reliable High-Resolution GNSS Receivers,” 2012.
  mla: Enneking, Christoph, et al. “Multi-Satellite Time-Delay Estimation for Reliable
    High-Resolution GNSS Receivers.” <i>Proceedings of IEEE/ION PLANS 2012</i>, 2012.
  short: 'C. Enneking, M. Stein, M. Castañeda, F. Antreich, J.A. Nossek, in: Proceedings
    of IEEE/ION PLANS 2012, Myrtle Beach, USA, 2012.'
date_created: 2023-01-30T11:51:57Z
date_updated: 2023-01-30T11:57:23Z
department:
- _id: '263'
place: Myrtle Beach, USA
publication: Proceedings of IEEE/ION PLANS 2012
status: public
title: Multi-Satellite Time-Delay Estimation for Reliable High-Resolution GNSS Receivers
type: conference
user_id: '43497'
year: '2012'
...
---
_id: '40810'
abstract:
- lang: eng
  text: This paper considers large multiple-input multiple-output (MIMO) communication
    systems with linear precoding and linear minimum mean-squared error (LMMSE) equalization
    based on the iterative conjugate gradient (CG) algorithm. Convergence of the CG
    algorithm is fast when the eigenvalues of the received signal’s covariance matrix
    are clustered, suggesting that mean-squared error and receiver complexity can
    be managed with judicious precoder design. In order to accelerate convergence
    of an iterative CG receiver, we incorporate constraints on two measures of eigenvalue
    clustering into the precoder design. Closed-form solutions to the optimal precoders
    are derived using majorization theory and convex optimization techniques. We show
    that if there are constraints on receiver complexity, the proposed precoders can
    improve performance for large MIMO systems operating over slowly time-varying
    fading channels.
author:
- first_name: Jun
  full_name: Tong, Jun
  last_name: Tong
- first_name: Peter J.
  full_name: Schreier, Peter J.
  last_name: Schreier
- first_name: Steven R.
  full_name: Weller, Steven R.
  last_name: Weller
citation:
  ama: Tong J, Schreier PJ, Weller SR. Linear precoding for MIMO systems with low-complexity
    receivers. <i>IEEE Trans\ Wireless Comm</i>. 2012;11(8):2828–2837. doi:<a href="https://doi.org/10.1109/TWC.2012.070912.110877">10.1109/TWC.2012.070912.110877</a>
  apa: Tong, J., Schreier, P. J., &#38; Weller, S. R. (2012). Linear precoding for
    MIMO systems with low-complexity receivers. <i>IEEE Trans.\ Wireless Comm.</i>,
    <i>11</i>(8), 2828–2837. <a href="https://doi.org/10.1109/TWC.2012.070912.110877">https://doi.org/10.1109/TWC.2012.070912.110877</a>
  bibtex: '@article{Tong_Schreier_Weller_2012, title={Linear precoding for MIMO systems
    with low-complexity receivers}, volume={11}, DOI={<a href="https://doi.org/10.1109/TWC.2012.070912.110877">10.1109/TWC.2012.070912.110877</a>},
    number={8}, journal={IEEE Trans.\ Wireless Comm.}, author={Tong, Jun and Schreier,
    Peter J. and Weller, Steven R.}, year={2012}, pages={2828–2837} }'
  chicago: 'Tong, Jun, Peter J. Schreier, and Steven R. Weller. “Linear Precoding
    for MIMO Systems with Low-Complexity Receivers.” <i>IEEE Trans.\ Wireless Comm.</i>
    11, no. 8 (2012): 2828–2837. <a href="https://doi.org/10.1109/TWC.2012.070912.110877">https://doi.org/10.1109/TWC.2012.070912.110877</a>.'
  ieee: 'J. Tong, P. J. Schreier, and S. R. Weller, “Linear precoding for MIMO systems
    with low-complexity receivers,” <i>IEEE Trans.\ Wireless Comm.</i>, vol. 11, no.
    8, pp. 2828–2837, 2012, doi: <a href="https://doi.org/10.1109/TWC.2012.070912.110877">10.1109/TWC.2012.070912.110877</a>.'
  mla: Tong, Jun, et al. “Linear Precoding for MIMO Systems with Low-Complexity Receivers.”
    <i>IEEE Trans.\ Wireless Comm.</i>, vol. 11, no. 8, 2012, pp. 2828–2837, doi:<a
    href="https://doi.org/10.1109/TWC.2012.070912.110877">10.1109/TWC.2012.070912.110877</a>.
  short: J. Tong, P.J. Schreier, S.R. Weller, IEEE Trans.\ Wireless Comm. 11 (2012)
    2828–2837.
date_created: 2023-01-30T11:51:55Z
date_updated: 2023-01-30T11:58:38Z
department:
- _id: '263'
doi: 10.1109/TWC.2012.070912.110877
intvolume: '        11'
issue: '8'
page: 2828–2837
publication: IEEE Trans.\ Wireless Comm.
status: public
title: Linear precoding for MIMO systems with low-complexity receivers
type: journal_article
user_id: '43497'
volume: 11
year: '2012'
...
---
_id: '40807'
abstract:
- lang: eng
  text: The Strong Uncorrelating Transform (SUT) allows blind separation of a mixture
    of complex independent sources if and only if all sources have distinct circularity
    coefficients. In practice, the circularity coefficients need to be estimated from
    observed data. We propose a generalized likelihood ratio test (GLRT) for separability
    of a complex mixture using the SUT, based on estimated circularity coefficients.
    For distinct circularity coefficients (separable case), the maximum likelihood
    (ML) estimates, required for the GLRT, are straightforward. However, for circularity
    coefficients with multiplicity larger than one (non-separable case), the ML estimates
    are much more difficult to find. Numerical simulations show the good performance
    of the proposed detector.
author:
- first_name: D.
  full_name: Ramírez, D.
  last_name: Ramírez
- first_name: P. J.
  full_name: Schreier, P. J.
  last_name: Schreier
- first_name: J.
  full_name: Vía, J.
  last_name: Vía
- first_name: I.
  full_name: Santamaría, I.
  last_name: Santamaría
citation:
  ama: 'Ramírez D, Schreier PJ, Vía J, Santamaría I. GLRT For Testing Separability
    Of A Complex-Valued Mixture Based On The Strong Uncorrelating Transform. In: <i>Proc.\
    IEEE Int.\ Work. Machine Learning for Signal Process.</i> ; 2012. doi:<a href="https://doi.org/10.1109/MLSP.2012.6349785">10.1109/MLSP.2012.6349785</a>'
  apa: Ramírez, D., Schreier, P. J., Vía, J., &#38; Santamaría, I. (2012). GLRT For
    Testing Separability Of A Complex-Valued Mixture Based On The Strong Uncorrelating
    Transform. <i>Proc.\ IEEE Int.\ Work. Machine Learning for Signal Process.</i>
    <a href="https://doi.org/10.1109/MLSP.2012.6349785">https://doi.org/10.1109/MLSP.2012.6349785</a>
  bibtex: '@inproceedings{Ramírez_Schreier_Vía_Santamaría_2012, place={Santander,
    Spain}, title={GLRT For Testing Separability Of A Complex-Valued Mixture Based
    On The Strong Uncorrelating Transform}, DOI={<a href="https://doi.org/10.1109/MLSP.2012.6349785">10.1109/MLSP.2012.6349785</a>},
    booktitle={Proc.\ IEEE Int.\ Work. Machine Learning for Signal Process.}, author={Ramírez,
    D. and Schreier, P. J. and Vía, J. and Santamaría, I.}, year={2012} }'
  chicago: Ramírez, D., P. J. Schreier, J. Vía, and I. Santamaría. “GLRT For Testing
    Separability Of A Complex-Valued Mixture Based On The Strong Uncorrelating Transform.”
    In <i>Proc.\ IEEE Int.\ Work. Machine Learning for Signal Process.</i> Santander,
    Spain, 2012. <a href="https://doi.org/10.1109/MLSP.2012.6349785">https://doi.org/10.1109/MLSP.2012.6349785</a>.
  ieee: 'D. Ramírez, P. J. Schreier, J. Vía, and I. Santamaría, “GLRT For Testing
    Separability Of A Complex-Valued Mixture Based On The Strong Uncorrelating Transform,”
    2012, doi: <a href="https://doi.org/10.1109/MLSP.2012.6349785">10.1109/MLSP.2012.6349785</a>.'
  mla: Ramírez, D., et al. “GLRT For Testing Separability Of A Complex-Valued Mixture
    Based On The Strong Uncorrelating Transform.” <i>Proc.\ IEEE Int.\ Work. Machine
    Learning for Signal Process.</i>, 2012, doi:<a href="https://doi.org/10.1109/MLSP.2012.6349785">10.1109/MLSP.2012.6349785</a>.
  short: 'D. Ramírez, P.J. Schreier, J. Vía, I. Santamaría, in: Proc.\ IEEE Int.\
    Work. Machine Learning for Signal Process., Santander, Spain, 2012.'
date_created: 2023-01-30T11:51:55Z
date_updated: 2023-01-30T11:58:35Z
department:
- _id: '263'
doi: 10.1109/MLSP.2012.6349785
place: Santander, Spain
publication: Proc.\ IEEE Int.\ Work. Machine Learning for Signal Process.
status: public
title: GLRT For Testing Separability Of A Complex-Valued Mixture Based On The Strong
  Uncorrelating Transform
type: conference
user_id: '43497'
year: '2012'
...