---
_id: '11796'
abstract:
- lang: eng
  text: The authors describe the improvements in a time-synchronous beam search strategy
    for a 10000-word continuous-speech recognition task. Basically they introduced
    two measures, namely a tree organization of the pronunciation lexicon and a novel
    look-ahead technique at the phoneme level. The experimental tests performed showed
    that the number of state hypotheses could be reduced from 50000 to 3000, i.e.,
    by a factor of about 17. At the same time, the word error rate did not increase.
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
citation:
  ama: Haeb-Umbach R, Ney H. Improvements in beam search for 10000-word continuous-speech
    recognition. <i>IEEE Transactions on Speech and Audio Processing</i>. 1994.
  apa: Haeb-Umbach, R., &#38; Ney, H. (1994). Improvements in beam search for 10000-word
    continuous-speech recognition. <i>IEEE Transactions on Speech and Audio Processing</i>.
  bibtex: '@article{Haeb-Umbach_Ney_1994, title={Improvements in beam search for 10000-word
    continuous-speech recognition}, journal={IEEE Transactions on Speech and Audio
    Processing}, author={Haeb-Umbach, Reinhold and Ney, Hermann}, year={1994} }'
  chicago: Haeb-Umbach, Reinhold, and Hermann Ney. “Improvements in Beam Search for
    10000-Word Continuous-Speech Recognition.” <i>IEEE Transactions on Speech and
    Audio Processing</i>, 1994.
  ieee: R. Haeb-Umbach and H. Ney, “Improvements in beam search for 10000-word continuous-speech
    recognition,” <i>IEEE Transactions on Speech and Audio Processing</i>, 1994.
  mla: Haeb-Umbach, Reinhold, and Hermann Ney. “Improvements in Beam Search for 10000-Word
    Continuous-Speech Recognition.” <i>IEEE Transactions on Speech and Audio Processing</i>,
    1994.
  short: R. Haeb-Umbach, H. Ney, IEEE Transactions on Speech and Audio Processing
    (1994).
date_created: 2019-07-12T05:28:25Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
publication: IEEE Transactions on Speech and Audio Processing
status: public
title: Improvements in beam search for 10000-word continuous-speech recognition
type: journal_article
user_id: '44006'
year: '1994'
...
---
_id: '11878'
author:
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
- first_name: Volker
  full_name: Steinbeiss, Volker
  last_name: Steinbeiss
- first_name: Xavier L.
  full_name: Aubert, Xavier L.
  last_name: Aubert
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: 'Ney H, Steinbeiss V, Aubert XL, Haeb-Umbach R. Progress in Large-Vocabulary,
    Continuous Speech Recognition. In: <i>Artifical Intelligence, Progress and Prospects
    of Speech Research and Technology, Munich</i>. ; 1994.'
  apa: Ney, H., Steinbeiss, V., Aubert, X. L., &#38; Haeb-Umbach, R. (1994). Progress
    in Large-Vocabulary, Continuous Speech Recognition. In <i>Artifical Intelligence,
    Progress and Prospects of Speech Research and Technology, Munich</i>.
  bibtex: '@inproceedings{Ney_Steinbeiss_Aubert_Haeb-Umbach_1994, title={Progress
    in Large-Vocabulary, Continuous Speech Recognition}, booktitle={Artifical Intelligence,
    Progress and Prospects of Speech Research and Technology, Munich}, author={Ney,
    Hermann and Steinbeiss, Volker and Aubert, Xavier L. and Haeb-Umbach, Reinhold},
    year={1994} }'
  chicago: Ney, Hermann, Volker Steinbeiss, Xavier L. Aubert, and Reinhold Haeb-Umbach.
    “Progress in Large-Vocabulary, Continuous Speech Recognition.” In <i>Artifical
    Intelligence, Progress and Prospects of Speech Research and Technology, Munich</i>,
    1994.
  ieee: H. Ney, V. Steinbeiss, X. L. Aubert, and R. Haeb-Umbach, “Progress in Large-Vocabulary,
    Continuous Speech Recognition,” in <i>Artifical Intelligence, Progress and Prospects
    of Speech Research and Technology, Munich</i>, 1994.
  mla: Ney, Hermann, et al. “Progress in Large-Vocabulary, Continuous Speech Recognition.”
    <i>Artifical Intelligence, Progress and Prospects of Speech Research and Technology,
    Munich</i>, 1994.
  short: 'H. Ney, V. Steinbeiss, X.L. Aubert, R. Haeb-Umbach, in: Artifical Intelligence,
    Progress and Prospects of Speech Research and Technology, Munich, 1994.'
date_created: 2019-07-12T05:30:00Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
language:
- iso: eng
publication: Artifical Intelligence, Progress and Prospects of Speech Research and
  Technology, Munich
status: public
title: Progress in Large-Vocabulary, Continuous Speech Recognition
type: conference
user_id: '44006'
year: '1994'
...
---
_id: '11879'
abstract:
- lang: eng
  text: "This paper gives an overview of a research system for phoneme based, large
    vocabulary continuous speech recognition. The system to be described has been
    applied to the SPICOS task, the DARPA RM task and a 12000 word dictation task.
    Experimental results for these three tasks will be presented. Like many other
    systems, the recognition architecture is based on an integrated statistical approach.
    In this paper, we describe the characteristic features of the system as opposed
    to other systems: (1) The Viterbi criterion is consistently applied both in training
    and testing. (2) Continuous mixture densities are used without any tying or smoothing;
    this approach can be viewed as a sort of \x91statistical template matching\x92.
    (3) Time-synchronous beam search is used consistently throughout all tasks; extensions
    using a tree organization of the vocabulary and phoneme lookahead are presented
    so that a 12000 word task can be handled."
author:
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
- first_name: Volker
  full_name: Steinbeiss, Volker
  last_name: Steinbeiss
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Bach Hiep
  full_name: Tran, Bach Hiep
  last_name: Tran
citation:
  ama: Ney H, Steinbeiss V, Haeb-Umbach R, Tran BH. An Overview of the Philips Research
    System for Large Vocabulary Continuous Speech Recognition. <i>International Journal
    on Pattern Recognition and Artificial Intelligence</i>. 1994.
  apa: Ney, H., Steinbeiss, V., Haeb-Umbach, R., &#38; Tran, B. H. (1994). An Overview
    of the Philips Research System for Large Vocabulary Continuous Speech Recognition.
    <i>International Journal on Pattern Recognition and Artificial Intelligence</i>.
  bibtex: '@article{Ney_Steinbeiss_Haeb-Umbach_Tran_1994, title={An Overview of the
    Philips Research System for Large Vocabulary Continuous Speech Recognition}, journal={International
    Journal on Pattern Recognition and Artificial Intelligence}, author={Ney, Hermann
    and Steinbeiss, Volker and Haeb-Umbach, Reinhold and Tran, Bach Hiep}, year={1994}
    }'
  chicago: Ney, Hermann, Volker Steinbeiss, Reinhold Haeb-Umbach, and Bach Hiep Tran.
    “An Overview of the Philips Research System for Large Vocabulary Continuous Speech
    Recognition.” <i>International Journal on Pattern Recognition and Artificial Intelligence</i>,
    1994.
  ieee: H. Ney, V. Steinbeiss, R. Haeb-Umbach, and B. H. Tran, “An Overview of the
    Philips Research System for Large Vocabulary Continuous Speech Recognition,” <i>International
    Journal on Pattern Recognition and Artificial Intelligence</i>, 1994.
  mla: Ney, Hermann, et al. “An Overview of the Philips Research System for Large
    Vocabulary Continuous Speech Recognition.” <i>International Journal on Pattern
    Recognition and Artificial Intelligence</i>, 1994.
  short: H. Ney, V. Steinbeiss, R. Haeb-Umbach, B.H. Tran, International Journal on
    Pattern Recognition and Artificial Intelligence (1994).
date_created: 2019-07-12T05:30:01Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
language:
- iso: eng
publication: International Journal on Pattern Recognition and Artificial Intelligence
status: public
title: An Overview of the Philips Research System for Large Vocabulary Continuous
  Speech Recognition
type: journal_article
user_id: '44006'
year: '1994'
...
---
_id: '11718'
abstract:
- lang: eng
  text: 'Linear discriminant analysis (LDA) experiments reported previously (ICASSP-92
    vol.1, p.13-16), are extended to context-dependent models and speaker-independent
    large vocabulary continuous speech recognition. Two variants of using mixture
    densities are compared: state-specific modeling and the monophone-tying approach
    where densities are shared across the states relevant to the same phoneme. Results
    are presented on the DARPA Resource Management (RM) task for both speaker-dependent
    (SD) and speaker-independent (SI) parts. Using triphone models based on LDA and
    continuous mixture densities, significant improvements have been observed and
    the following word error rates have been achieved: for the SD part, 7.8% without
    grammar and 1.5% with word pair; and for the SI part, 17.2% and 4.6%, respectively.
    These scores are averaged over 1200 SD or SI evaluation sentences and are among
    the best published so far on the RM database.'
author:
- first_name: Xavier L.
  full_name: Aubert, Xavier L.
  last_name: Aubert
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
citation:
  ama: 'Aubert XL, Haeb-Umbach R, Ney H. Continuous Mixture Densities and Linear Discriminant
    Analysis for Improved Context-Dependent Acoustic Models. In: <i>ICASSP, Minneapolis</i>.
    ; 1993.'
  apa: Aubert, X. L., Haeb-Umbach, R., &#38; Ney, H. (1993). Continuous Mixture Densities
    and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models.
    In <i>ICASSP, Minneapolis</i>.
  bibtex: '@inproceedings{Aubert_Haeb-Umbach_Ney_1993, title={Continuous Mixture Densities
    and Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models},
    booktitle={ICASSP, Minneapolis}, author={Aubert, Xavier L. and Haeb-Umbach, Reinhold
    and Ney, Hermann}, year={1993} }'
  chicago: Aubert, Xavier L., Reinhold Haeb-Umbach, and Hermann Ney. “Continuous Mixture
    Densities and Linear Discriminant Analysis for Improved Context-Dependent Acoustic
    Models.” In <i>ICASSP, Minneapolis</i>, 1993.
  ieee: X. L. Aubert, R. Haeb-Umbach, and H. Ney, “Continuous Mixture Densities and
    Linear Discriminant Analysis for Improved Context-Dependent Acoustic Models,”
    in <i>ICASSP, Minneapolis</i>, 1993.
  mla: Aubert, Xavier L., et al. “Continuous Mixture Densities and Linear Discriminant
    Analysis for Improved Context-Dependent Acoustic Models.” <i>ICASSP, Minneapolis</i>,
    1993.
  short: 'X.L. Aubert, R. Haeb-Umbach, H. Ney, in: ICASSP, Minneapolis, 1993.'
date_created: 2019-07-12T05:26:55Z
date_updated: 2022-01-06T06:51:07Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1993/ICASSP_1993_Haeb1_paper.pdf
oa: '1'
publication: ICASSP, Minneapolis
status: public
title: Continuous Mixture Densities and Linear Discriminant Analysis for Improved
  Context-Dependent Acoustic Models
type: conference
user_id: '44006'
year: '1993'
...
---
_id: '11749'
abstract:
- lang: eng
  text: 'To decrease the hazards of using mobile phones while driving, voice processing
    provides several tools that simplify their use: echo cancellation allows comfortable
    hands-free conversation, feedback and user guidance by voice allow to operate
    the phone in eyes-busy situations, and last not least speech recognition frees
    from keypad data entry to operate the telephone. A comprehensive view of a device
    incorporating the above mentioned technologies, which has been realized as an
    add-on for the Philips car telephone family, will be presented. Emphasis is placed
    on the speech recognition algorithms. Robustness of the algorithms to changing
    acoustic environment was improved by estimating and subtracting the long-term
    spectrum. We will show that, if this operation is done recursively, it is equivalent
    to the high-pass filtering or RASTA (Relative Spectral Approaches) methods recently
    proposed in the literature.'
author:
- first_name: Stefan
  full_name: Dobler, Stefan
  last_name: Dobler
- first_name: Dieter
  full_name: Geller, Dieter
  last_name: Geller
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Peter
  full_name: Meyer, Peter
  last_name: Meyer
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
- first_name: Hans Wilhelm
  full_name: Ruehl, Hans Wilhelm
  last_name: Ruehl
citation:
  ama: Dobler S, Geller D, Haeb-Umbach R, Meyer P, Ney H, Ruehl HW. Design and use
    of speech recognition algorithms for a mobile radio telephone. <i>Speech Communication</i>.
    1993.
  apa: Dobler, S., Geller, D., Haeb-Umbach, R., Meyer, P., Ney, H., &#38; Ruehl, H.
    W. (1993). Design and use of speech recognition algorithms for a mobile radio
    telephone. <i>Speech Communication</i>.
  bibtex: '@article{Dobler_Geller_Haeb-Umbach_Meyer_Ney_Ruehl_1993, title={Design
    and use of speech recognition algorithms for a mobile radio telephone}, journal={Speech
    Communication}, author={Dobler, Stefan and Geller, Dieter and Haeb-Umbach, Reinhold
    and Meyer, Peter and Ney, Hermann and Ruehl, Hans Wilhelm}, year={1993} }'
  chicago: Dobler, Stefan, Dieter Geller, Reinhold Haeb-Umbach, Peter Meyer, Hermann
    Ney, and Hans Wilhelm Ruehl. “Design and Use of Speech Recognition Algorithms
    for a Mobile Radio Telephone.” <i>Speech Communication</i>, 1993.
  ieee: S. Dobler, D. Geller, R. Haeb-Umbach, P. Meyer, H. Ney, and H. W. Ruehl, “Design
    and use of speech recognition algorithms for a mobile radio telephone,” <i>Speech
    Communication</i>, 1993.
  mla: Dobler, Stefan, et al. “Design and Use of Speech Recognition Algorithms for
    a Mobile Radio Telephone.” <i>Speech Communication</i>, 1993.
  short: S. Dobler, D. Geller, R. Haeb-Umbach, P. Meyer, H. Ney, H.W. Ruehl, Speech
    Communication (1993).
date_created: 2019-07-12T05:27:31Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
publication: Speech Communication
status: public
title: Design and use of speech recognition algorithms for a mobile radio telephone
type: journal_article
user_id: '44006'
year: '1993'
...
---
_id: '11788'
abstract:
- lang: eng
  text: Four methods were used to reduce the error rate of a continuous-density hidden
    Markov-model-based speech recognizer on the TI/NIST connected-digits recognition
    task. Energy thresholding sets a lower limit on the energy in each frequency channel
    to suppress spurious distortion accumulation caused by random noise. This led
    to an improvement in error rate by 15%. Spectrum normalization was used to compensate
    for across-speaker variations, resulting in an additional improvement by 20%.
    The acoustic resolution was increased up to 32 component densities per mixture.
    Each doubling of the number of component densities yielded a reduction in error
    rate by roughly 20%. Linear discriminant analysis was used for improved feature
    selection. A single class-independent transformation matrix was applied to a large
    input vector consisting of several adjacent frames, resulting in an improvement
    by 20% for high acoustic resolution. The final string error rate was 0.84%.
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Dieter
  full_name: Geller, Dieter
  last_name: Geller
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
citation:
  ama: 'Haeb-Umbach R, Geller D, Ney H. Improvements in Connected Digit Recognition
    Using Linear Discriminant Analysis and Mixture Densities. In: <i>ICASSP, Minneapolis</i>.
    ; 1993.'
  apa: Haeb-Umbach, R., Geller, D., &#38; Ney, H. (1993). Improvements in Connected
    Digit Recognition Using Linear Discriminant Analysis and Mixture Densities. In
    <i>ICASSP, Minneapolis</i>.
  bibtex: '@inproceedings{Haeb-Umbach_Geller_Ney_1993, title={Improvements in Connected
    Digit Recognition Using Linear Discriminant Analysis and Mixture Densities}, booktitle={ICASSP,
    Minneapolis}, author={Haeb-Umbach, Reinhold and Geller, Dieter and Ney, Hermann},
    year={1993} }'
  chicago: Haeb-Umbach, Reinhold, Dieter Geller, and Hermann Ney. “Improvements in
    Connected Digit Recognition Using Linear Discriminant Analysis and Mixture Densities.”
    In <i>ICASSP, Minneapolis</i>, 1993.
  ieee: R. Haeb-Umbach, D. Geller, and H. Ney, “Improvements in Connected Digit Recognition
    Using Linear Discriminant Analysis and Mixture Densities,” in <i>ICASSP, Minneapolis</i>,
    1993.
  mla: Haeb-Umbach, Reinhold, et al. “Improvements in Connected Digit Recognition
    Using Linear Discriminant Analysis and Mixture Densities.” <i>ICASSP, Minneapolis</i>,
    1993.
  short: 'R. Haeb-Umbach, D. Geller, H. Ney, in: ICASSP, Minneapolis, 1993.'
date_created: 2019-07-12T05:28:16Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1993/ICASSP_1993_Haeb_paper.pdf
oa: '1'
publication: ICASSP, Minneapolis
status: public
title: Improvements in Connected Digit Recognition Using Linear Discriminant Analysis
  and Mixture Densities
type: conference
user_id: '44006'
year: '1993'
...
---
_id: '11904'
abstract:
- lang: eng
  text: 'This paper gives a status report of the Philips research system for phoneme-based,
    large-vocabulary, continuous-speech recognition. Like for many other systems,
    the recognition architecture is based on an integrated statistical approach. We
    describe the characteristic features of the system as opposed to other systems:
    1. The Viterbi criterion is consistently applied both in training and testing.
    2. Continuous mixture densities are used without tying or smoothing. 3. Time-synchronous
    beam search in connection with a phoneme look-ahead is applied to a tree-organized
    lexicon. The system has been successfully applied to the American English DARPA
    RM task. Here, we report experimental results for a German 13 000-word Philips
    internal dictation task. In addition to the scientific prototype, a PC version
    has been set up which is described here for the first time.'
author:
- first_name: Volker
  full_name: Steinbiss, Volker
  last_name: Steinbiss
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: B.-H.
  full_name: Train, B.-H.
  last_name: Train
- first_name: U.
  full_name: Essen, U.
  last_name: Essen
- first_name: Reinhard
  full_name: Kneser, Reinhard
  last_name: Kneser
- first_name: Martin
  full_name: Oerder, Martin
  last_name: Oerder
- first_name: H. G.
  full_name: Meier, H. G.
  last_name: Meier
- first_name: X.
  full_name: Aubert, X.
  last_name: Aubert
- first_name: Christian
  full_name: Dugast, Christian
  last_name: Dugast
- first_name: Dieter
  full_name: Geller, Dieter
  last_name: Geller
- first_name: W.
  full_name: Hoellerbauer, W.
  last_name: Hoellerbauer
- first_name: H.
  full_name: Bartosik, H.
  last_name: Bartosik
citation:
  ama: 'Steinbiss V, Ney H, Haeb-Umbach R, et al. The Philips Research System for
    Large-Vocabulary Continuous-Speech Recognition. In: <i>EUROSPEECH, Berlin</i>.
    ; 1993.'
  apa: Steinbiss, V., Ney, H., Haeb-Umbach, R., Train, B.-H., Essen, U., Kneser, R.,
    … Bartosik, H. (1993). The Philips Research System for Large-Vocabulary Continuous-Speech
    Recognition. In <i>EUROSPEECH, Berlin</i>.
  bibtex: '@inproceedings{Steinbiss_Ney_Haeb-Umbach_Train_Essen_Kneser_Oerder_Meier_Aubert_Dugast_et
    al._1993, title={The Philips Research System for Large-Vocabulary Continuous-Speech
    Recognition}, booktitle={EUROSPEECH, Berlin}, author={Steinbiss, Volker and Ney,
    Hermann and Haeb-Umbach, Reinhold and Train, B.-H. and Essen, U. and Kneser, Reinhard
    and Oerder, Martin and Meier, H. G. and Aubert, X. and Dugast, Christian and et
    al.}, year={1993} }'
  chicago: Steinbiss, Volker, Hermann Ney, Reinhold Haeb-Umbach, B.-H. Train, U. Essen,
    Reinhard Kneser, Martin Oerder, et al. “The Philips Research System for Large-Vocabulary
    Continuous-Speech Recognition.” In <i>EUROSPEECH, Berlin</i>, 1993.
  ieee: V. Steinbiss <i>et al.</i>, “The Philips Research System for Large-Vocabulary
    Continuous-Speech Recognition,” in <i>EUROSPEECH, Berlin</i>, 1993.
  mla: Steinbiss, Volker, et al. “The Philips Research System for Large-Vocabulary
    Continuous-Speech Recognition.” <i>EUROSPEECH, Berlin</i>, 1993.
  short: 'V. Steinbiss, H. Ney, R. Haeb-Umbach, B.-H. Train, U. Essen, R. Kneser,
    M. Oerder, H.G. Meier, X. Aubert, C. Dugast, D. Geller, W. Hoellerbauer, H. Bartosik,
    in: EUROSPEECH, Berlin, 1993.'
date_created: 2019-07-12T05:30:30Z
date_updated: 2022-01-06T06:51:12Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1993/Eurospeech_1993_Haeb_paper.pdf
oa: '1'
publication: EUROSPEECH, Berlin
status: public
title: The Philips Research System for Large-Vocabulary Continuous-Speech Recognition
type: conference
user_id: '44006'
year: '1993'
...
---
_id: '11719'
author:
- first_name: Xavier L.
  full_name: Aubert, Xavier L.
  last_name: Aubert
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: 'Aubert XL, Ney H, Haeb-Umbach R. The Philips Research System for Continuous-Speech
    Recognition: Overview and Evaluation on the DRAPA RM Task. In: <i>DRAPA Speech
    Workshop</i>. ; 1992.'
  apa: 'Aubert, X. L., Ney, H., &#38; Haeb-Umbach, R. (1992). The Philips Research
    System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA
    RM Task. In <i>DRAPA Speech Workshop</i>.'
  bibtex: '@inproceedings{Aubert_Ney_Haeb-Umbach_1992, title={The Philips Research
    System for Continuous-Speech Recognition: Overview and Evaluation on the DRAPA
    RM Task}, booktitle={DRAPA Speech Workshop}, author={Aubert, Xavier L. and Ney,
    Hermann and Haeb-Umbach, Reinhold}, year={1992} }'
  chicago: 'Aubert, Xavier L., Hermann Ney, and Reinhold Haeb-Umbach. “The Philips
    Research System for Continuous-Speech Recognition: Overview and Evaluation on
    the DRAPA RM Task.” In <i>DRAPA Speech Workshop</i>, 1992.'
  ieee: 'X. L. Aubert, H. Ney, and R. Haeb-Umbach, “The Philips Research System for
    Continuous-Speech Recognition: Overview and Evaluation on the DRAPA RM Task,”
    in <i>DRAPA Speech Workshop</i>, 1992.'
  mla: 'Aubert, Xavier L., et al. “The Philips Research System for Continuous-Speech
    Recognition: Overview and Evaluation on the DRAPA RM Task.” <i>DRAPA Speech Workshop</i>,
    1992.'
  short: 'X.L. Aubert, H. Ney, R. Haeb-Umbach, in: DRAPA Speech Workshop, 1992.'
date_created: 2019-07-12T05:26:56Z
date_updated: 2022-01-06T06:51:07Z
department:
- _id: '54'
language:
- iso: eng
publication: DRAPA Speech Workshop
status: public
title: 'The Philips Research System for Continuous-Speech Recognition: Overview and
  Evaluation on the DRAPA RM Task'
type: conference
user_id: '44006'
year: '1992'
...
---
_id: '11769'
author:
- first_name: Dieter
  full_name: Geller, Dieter
  last_name: Geller
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
citation:
  ama: 'Geller D, Haeb-Umbach R, Ney H. Improvements in Speech Recognition for Voice
    Dialling in the Car Environment. In: <i>ESCA Workshop on Speech Recognition in
    Adverse Conditions, Cannes-Mandelieu</i>. ; 1992.'
  apa: Geller, D., Haeb-Umbach, R., &#38; Ney, H. (1992). Improvements in Speech Recognition
    for Voice Dialling in the Car Environment. In <i>ESCA Workshop on Speech Recognition
    in Adverse Conditions, Cannes-Mandelieu</i>.
  bibtex: '@inproceedings{Geller_Haeb-Umbach_Ney_1992, title={Improvements in Speech
    Recognition for Voice Dialling in the Car Environment}, booktitle={ESCA Workshop
    on Speech Recognition in Adverse Conditions, Cannes-Mandelieu}, author={Geller,
    Dieter and Haeb-Umbach, Reinhold and Ney, Hermann}, year={1992} }'
  chicago: Geller, Dieter, Reinhold Haeb-Umbach, and Hermann Ney. “Improvements in
    Speech Recognition for Voice Dialling in the Car Environment.” In <i>ESCA Workshop
    on Speech Recognition in Adverse Conditions, Cannes-Mandelieu</i>, 1992.
  ieee: D. Geller, R. Haeb-Umbach, and H. Ney, “Improvements in Speech Recognition
    for Voice Dialling in the Car Environment,” in <i>ESCA Workshop on Speech Recognition
    in Adverse Conditions, Cannes-Mandelieu</i>, 1992.
  mla: Geller, Dieter, et al. “Improvements in Speech Recognition for Voice Dialling
    in the Car Environment.” <i>ESCA Workshop on Speech Recognition in Adverse Conditions,
    Cannes-Mandelieu</i>, 1992.
  short: 'D. Geller, R. Haeb-Umbach, H. Ney, in: ESCA Workshop on Speech Recognition
    in Adverse Conditions, Cannes-Mandelieu, 1992.'
date_created: 2019-07-12T05:27:54Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
publication: ESCA Workshop on Speech Recognition in Adverse Conditions, Cannes-Mandelieu
status: public
title: Improvements in Speech Recognition for Voice Dialling in the Car Environment
type: conference
user_id: '44006'
year: '1992'
...
---
_id: '11782'
abstract:
- lang: eng
  text: 'The problem of trellis coding for multilevel baseband transmission over partial
    response channels with transfer polynomials of the form (1+or-D/sup N/) is addressed.
    The novel method presented here accounts for the channel memory by using multidimensional
    signal sets and partitioning the signal set present at the noiseless channel output.
    It is shown that this coding technique can be viewed as a generalization of a
    well-known procedure for binary signaling: the concatenation of convolutional
    codes and inner block codes that are tuned to the channel polynomial. It results
    in high coding gains with moderate complexity if some bandwidth expansion is accepted.'
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: Haeb-Umbach R. A modified trellis coding technique for partial response channels.
    <i>IEEE Transactions on Communications</i>. 1992.
  apa: Haeb-Umbach, R. (1992). A modified trellis coding technique for partial response
    channels. <i>IEEE Transactions on Communications</i>.
  bibtex: '@article{Haeb-Umbach_1992, title={A modified trellis coding technique for
    partial response channels}, journal={IEEE Transactions on Communications}, author={Haeb-Umbach,
    Reinhold}, year={1992} }'
  chicago: Haeb-Umbach, Reinhold. “A Modified Trellis Coding Technique for Partial
    Response Channels.” <i>IEEE Transactions on Communications</i>, 1992.
  ieee: R. Haeb-Umbach, “A modified trellis coding technique for partial response
    channels,” <i>IEEE Transactions on Communications</i>, 1992.
  mla: Haeb-Umbach, Reinhold. “A Modified Trellis Coding Technique for Partial Response
    Channels.” <i>IEEE Transactions on Communications</i>, 1992.
  short: R. Haeb-Umbach, IEEE Transactions on Communications (1992).
date_created: 2019-07-12T05:28:09Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
publication: IEEE Transactions on Communications
status: public
title: A modified trellis coding technique for partial response channels
type: journal_article
user_id: '44006'
year: '1992'
...
---
_id: '11792'
abstract:
- lang: eng
  text: The authors present conditions on the error sequences between channel input
    sequences which guarantee certain lower bounds on the free Euclidian distance
    at the output of a partial-response (PR) class I or II channel. From these expressions,
    trellis codes are derived which improve performance of binary signaling over noisy
    PR channels with reduced complexity maximum-likelihood sequence detection. They
    are shown to be compatible with the input restriction caused by the magnetooptical
    resonant coil direct overwrite recording scheme. The codes achieve high signal-to-noise
    ratio coding gains of 3 dB (on PR class I) and 2.2 dB (on PR class II) with rates
    as close to, but strictly less than, the capacity of the initial input restriction
    as desired. The performance of these codes is analyzed with an optical channel
    simulation system which shows that one code has the rare but highly desirable
    property that its maximum-likelihood sequence detector (MLSD) is less complex
    than the MLSD of the reference system and still achieves an error rate performance
    gain of 1.8 dB
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Robert
  full_name: Lynch, Robert
  last_name: Lynch
citation:
  ama: Haeb-Umbach R, Lynch R. Trellis codes for partial-response magnetooptical direct
    overwrite recording. <i>IEEE Journal on Selected Areas in Communications</i>.
    1992.
  apa: Haeb-Umbach, R., &#38; Lynch, R. (1992). Trellis codes for partial-response
    magnetooptical direct overwrite recording. <i>IEEE Journal on Selected Areas in
    Communications</i>.
  bibtex: '@article{Haeb-Umbach_Lynch_1992, title={Trellis codes for partial-response
    magnetooptical direct overwrite recording}, journal={IEEE Journal on Selected
    Areas in Communications}, author={Haeb-Umbach, Reinhold and Lynch, Robert}, year={1992}
    }'
  chicago: Haeb-Umbach, Reinhold, and Robert Lynch. “Trellis Codes for Partial-Response
    Magnetooptical Direct Overwrite Recording.” <i>IEEE Journal on Selected Areas
    in Communications</i>, 1992.
  ieee: R. Haeb-Umbach and R. Lynch, “Trellis codes for partial-response magnetooptical
    direct overwrite recording,” <i>IEEE Journal on Selected Areas in Communications</i>,
    1992.
  mla: Haeb-Umbach, Reinhold, and Robert Lynch. “Trellis Codes for Partial-Response
    Magnetooptical Direct Overwrite Recording.” <i>IEEE Journal on Selected Areas
    in Communications</i>, 1992.
  short: R. Haeb-Umbach, R. Lynch, IEEE Journal on Selected Areas in Communications
    (1992).
date_created: 2019-07-12T05:28:21Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
publication: IEEE Journal on Selected Areas in Communications
status: public
title: Trellis codes for partial-response magnetooptical direct overwrite recording
type: journal_article
user_id: '44006'
year: '1992'
...
---
_id: '11797'
abstract:
- lang: eng
  text: The interaction of linear discriminant analysis (LDA) and a modeling approach
    using continuous Laplacian mixture density HMM is studied experimentally. The
    largest improvements in speech recognition could be obtained when the classes
    for the LDA transform were defined to be sub-phone units. On a 12000 word German
    recognition task with small overlap between training and test vocabulary a reduction
    in error rate by one-fifth was achieved compared to the case without LDA. On the
    development set of the DARPA RM1 task the error rate was reduced by one-third.
    For the DARPA speaker-dependent no-grammar case, the error rate averaged over
    12 speakers was 9.9%. This was achieved with a recognizer using LDA and a set
    of only 47 Viterbi-trained context-independent phonemes.
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
citation:
  ama: 'Haeb-Umbach R, Ney H. Linear Discriminant Analysis for Improved Large Vocabulary
    Continuous Speech Recognition. In: <i>ICASSP, San Francisco</i>. ; 1992.'
  apa: Haeb-Umbach, R., &#38; Ney, H. (1992). Linear Discriminant Analysis for Improved
    Large Vocabulary Continuous Speech Recognition. In <i>ICASSP, San Francisco</i>.
  bibtex: '@inproceedings{Haeb-Umbach_Ney_1992, title={Linear Discriminant Analysis
    for Improved Large Vocabulary Continuous Speech Recognition}, booktitle={ICASSP,
    San Francisco}, author={Haeb-Umbach, Reinhold and Ney, Hermann}, year={1992} }'
  chicago: Haeb-Umbach, Reinhold, and Hermann Ney. “Linear Discriminant Analysis for
    Improved Large Vocabulary Continuous Speech Recognition.” In <i>ICASSP, San Francisco</i>,
    1992.
  ieee: R. Haeb-Umbach and H. Ney, “Linear Discriminant Analysis for Improved Large
    Vocabulary Continuous Speech Recognition,” in <i>ICASSP, San Francisco</i>, 1992.
  mla: Haeb-Umbach, Reinhold, and Hermann Ney. “Linear Discriminant Analysis for Improved
    Large Vocabulary Continuous Speech Recognition.” <i>ICASSP, San Francisco</i>,
    1992.
  short: 'R. Haeb-Umbach, H. Ney, in: ICASSP, San Francisco, 1992.'
date_created: 2019-07-12T05:28:26Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1992/ICASSP_1992_Haeb1_paper.pdf
oa: '1'
publication: ICASSP, San Francisco
status: public
title: Linear Discriminant Analysis for Improved Large Vocabulary Continuous Speech
  Recognition
type: conference
user_id: '44006'
year: '1992'
...
---
_id: '11877'
abstract:
- lang: eng
  text: 'This paper describes the improvements in a time synchronous beam search strategy
    for a 10000-word continuous speech recognition task. The improvements are based
    on two measures: a tree-organization of the pronunciation lexicon and a novel
    look-ahead technique at the phoneme level, both of which interact directly with
    the detailed search at the state levels of the phoneme models. Experimental tests
    were performed for four speakers on a 12306-word task. As a result of the above
    measures, the overall search effort was reduced by a factor of 17 without a loss
    in recognition accuracy.'
author:
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: B. H.
  full_name: Tran, B. H.
  last_name: Tran
- first_name: Martin
  full_name: Oerder, Martin
  last_name: Oerder
citation:
  ama: 'Ney H, Haeb-Umbach R, Tran BH, Oerder M. Improvements in Beam Search for 10,000-Word-Continuous
    Speech Recognition. In: <i>ICASSP, San Francisco</i>. ; 1992.'
  apa: Ney, H., Haeb-Umbach, R., Tran, B. H., &#38; Oerder, M. (1992). Improvements
    in Beam Search for 10,000-Word-Continuous Speech Recognition. In <i>ICASSP, San
    Francisco</i>.
  bibtex: '@inproceedings{Ney_Haeb-Umbach_Tran_Oerder_1992, title={Improvements in
    Beam Search for 10,000-Word-Continuous Speech Recognition}, booktitle={ICASSP,
    San Francisco}, author={Ney, Hermann and Haeb-Umbach, Reinhold and Tran, B. H.
    and Oerder, Martin}, year={1992} }'
  chicago: Ney, Hermann, Reinhold Haeb-Umbach, B. H. Tran, and Martin Oerder. “Improvements
    in Beam Search for 10,000-Word-Continuous Speech Recognition.” In <i>ICASSP, San
    Francisco</i>, 1992.
  ieee: H. Ney, R. Haeb-Umbach, B. H. Tran, and M. Oerder, “Improvements in Beam Search
    for 10,000-Word-Continuous Speech Recognition,” in <i>ICASSP, San Francisco</i>,
    1992.
  mla: Ney, Hermann, et al. “Improvements in Beam Search for 10,000-Word-Continuous
    Speech Recognition.” <i>ICASSP, San Francisco</i>, 1992.
  short: 'H. Ney, R. Haeb-Umbach, B.H. Tran, M. Oerder, in: ICASSP, San Francisco,
    1992.'
date_created: 2019-07-12T05:29:59Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1992/ICASSP_1992_Haeb_paper.pdf
oa: '1'
publication: ICASSP, San Francisco
status: public
title: Improvements in Beam Search for 10,000-Word-Continuous Speech Recognition
type: conference
user_id: '44006'
year: '1992'
...
---
_id: '11798'
abstract:
- lang: eng
  text: 'In a large vocabulary continuous speech recognition task the search for the
    "best" (in the maximum-a-posteriori sense) word sequence is the most (computing)
    time consuming part of the system. End-of-word hypotheses are created almost every
    time frame. With a stochastic language model every lexicon entry is an admissible
    successor candidate. By using a "fast match" module which scores the word candidates
    according to their acoustic feasibility ahead of the current time frame, the search
    cost can be considerably reduced. Only the fraction of the words with favourable
    fast match scores will be further processed in the detailed match, where the likelihood
    of a segment of acoustics given the word model is computed. We derive a novel
    word selection strategy which is "consistent" in the sense that it introduces
    no additional decoding errors and which still reduces the search space by a factor
    of 2 - 3 compared to standard Viterbi beam search. Giving up the consistency requirement,
    pruning strategies can be deduced which further reduce the search effort significantly:
    the size of the word startup list is reduced to 2% - 4% of its original size with
    a modest increase in error rate by l%-2%.'
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Hermann
  full_name: Ney, Hermann
  last_name: Ney
citation:
  ama: 'Haeb-Umbach R, Ney H. A Look-Ahead Technique for Large Vocabulary Continuous
    Speech Recognition. In: <i>EUROSPEECH, Genova</i>. ; 1991.'
  apa: Haeb-Umbach, R., &#38; Ney, H. (1991). A Look-Ahead Technique for Large Vocabulary
    Continuous Speech Recognition. In <i>EUROSPEECH, Genova</i>.
  bibtex: '@inproceedings{Haeb-Umbach_Ney_1991, title={A Look-Ahead Technique for
    Large Vocabulary Continuous Speech Recognition}, booktitle={EUROSPEECH, Genova},
    author={Haeb-Umbach, Reinhold and Ney, Hermann}, year={1991} }'
  chicago: Haeb-Umbach, Reinhold, and Hermann Ney. “A Look-Ahead Technique for Large
    Vocabulary Continuous Speech Recognition.” In <i>EUROSPEECH, Genova</i>, 1991.
  ieee: R. Haeb-Umbach and H. Ney, “A Look-Ahead Technique for Large Vocabulary Continuous
    Speech Recognition,” in <i>EUROSPEECH, Genova</i>, 1991.
  mla: Haeb-Umbach, Reinhold, and Hermann Ney. “A Look-Ahead Technique for Large Vocabulary
    Continuous Speech Recognition.” <i>EUROSPEECH, Genova</i>, 1991.
  short: 'R. Haeb-Umbach, H. Ney, in: EUROSPEECH, Genova, 1991.'
date_created: 2019-07-12T05:28:28Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1991/Eurospeech_1991_Haeb_paper.pdf
oa: '1'
publication: EUROSPEECH, Genova
status: public
title: A Look-Ahead Technique for Large Vocabulary Continuous Speech Recognition
type: conference
user_id: '44006'
year: '1991'
...
---
_id: '11800'
abstract:
- lang: eng
  text: The resonant bias coil technique requires even-numbered transitions to be
    written on even-numbered clock cycles, and odd-numbered transitions on odd-numbered
    clock cycles. This constraint is met by double-spaced run-length-limited (d, k,
    2) codes where the number of consecutive zeros is even. Exploiting the polarity
    of the transitions, a detection window that has double the size of the code bit
    period is possible. The authors describe a detection circuit that achieves the
    enlarged detection window, and present a phase detector which is particularly
    simple to implement. Channel bit-error-rate measurements have been carried out
    employing a rate 1/3 (2, 8, 2) code. Error rates of 10/sup -8/ were achieved for
    recording densities up to 33 kb/in. The results demonstrate the expected excellent
    immunity of the direct overwrite scheme to bloom.
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: D.
  full_name: Rugar, D.
  last_name: Rugar
- first_name: T.
  full_name: Howell, T.
  last_name: Howell
- first_name: G. P.
  full_name: Coleman, G. P.
  last_name: Coleman
citation:
  ama: 'Haeb-Umbach R, Rugar D, Howell T, Coleman GP. Coding and Signal Processing
    for a Magneto-optic Resonant Bias Coil Overwrite Experiment. In: <i>International
    Conference on Communication, Atlanta</i>. ; 1990.'
  apa: Haeb-Umbach, R., Rugar, D., Howell, T., &#38; Coleman, G. P. (1990). Coding
    and Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment.
    In <i>International Conference on Communication, Atlanta</i>.
  bibtex: '@inproceedings{Haeb-Umbach_Rugar_Howell_Coleman_1990, title={Coding and
    Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment},
    booktitle={International Conference on Communication, Atlanta}, author={Haeb-Umbach,
    Reinhold and Rugar, D. and Howell, T. and Coleman, G. P.}, year={1990} }'
  chicago: Haeb-Umbach, Reinhold, D. Rugar, T. Howell, and G. P. Coleman. “Coding
    and Signal Processing for a Magneto-Optic Resonant Bias Coil Overwrite Experiment.”
    In <i>International Conference on Communication, Atlanta</i>, 1990.
  ieee: R. Haeb-Umbach, D. Rugar, T. Howell, and G. P. Coleman, “Coding and Signal
    Processing for a Magneto-optic Resonant Bias Coil Overwrite Experiment,” in <i>International
    Conference on Communication, Atlanta</i>, 1990.
  mla: Haeb-Umbach, Reinhold, et al. “Coding and Signal Processing for a Magneto-Optic
    Resonant Bias Coil Overwrite Experiment.” <i>International Conference on Communication,
    Atlanta</i>, 1990.
  short: 'R. Haeb-Umbach, D. Rugar, T. Howell, G.P. Coleman, in: International Conference
    on Communication, Atlanta, 1990.'
date_created: 2019-07-12T05:28:30Z
date_updated: 2022-01-06T06:51:09Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1990/Conf.Atlanta_1990_Haeb_paper.pdf
oa: '1'
publication: International Conference on Communication, Atlanta
status: public
title: Coding and Signal Processing for a Magneto-optic Resonant Bias Coil Overwrite
  Experiment
type: conference
user_id: '44006'
year: '1990'
...
---
_id: '11793'
abstract:
- lang: eng
  text: The problem of optimal carrier recovery and detection of digitally phase modulated
    signals on fading channels by using a nonstructured approach is presented, i.e.
    no constraint is placed on the receiver structure. First, the optimal receiver
    is derived for digitally phase-modulated signals when transmitted over a frequency-nonselective
    fading channel with memory. The memory results from the fact that usually the
    coherence time of the channel is larger than the symbol period. Symbols adjacent
    in time cannot be detected independently and therefore the well-known quadratic
    receiver is not optimal in this case. A maximum a posteriori (MAP) detector is
    derived and explicitly utilizes the channel memory for carrier recovery. The derivation
    shows that the optimal carrier recovery is, under certain conditions, a Kalman
    filter. Some attractive properties of this carrier recovery unit (including the
    absence of hang up) are discussed. Then the error rate of several digital modulation
    schemes is calculated taking the performance of the filter into account. The differences
    in susceptibility of the modulation schemes to carrier phase jitter are specified.
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Heinrich
  full_name: Meyr, Heinrich
  last_name: Meyr
citation:
  ama: Haeb-Umbach R, Meyr H. A systematic approach to carrier recovery and detection
    of digitally phase modulated signals on fading channels. <i>IEEE Transactions
    on Communications</i>. 1989.
  apa: Haeb-Umbach, R., &#38; Meyr, H. (1989). A systematic approach to carrier recovery
    and detection of digitally phase modulated signals on fading channels. <i>IEEE
    Transactions on Communications</i>.
  bibtex: '@article{Haeb-Umbach_Meyr_1989, title={A systematic approach to carrier
    recovery and detection of digitally phase modulated signals on fading channels},
    journal={IEEE Transactions on Communications}, author={Haeb-Umbach, Reinhold and
    Meyr, Heinrich}, year={1989} }'
  chicago: Haeb-Umbach, Reinhold, and Heinrich Meyr. “A Systematic Approach to Carrier
    Recovery and Detection of Digitally Phase Modulated Signals on Fading Channels.”
    <i>IEEE Transactions on Communications</i>, 1989.
  ieee: R. Haeb-Umbach and H. Meyr, “A systematic approach to carrier recovery and
    detection of digitally phase modulated signals on fading channels,” <i>IEEE Transactions
    on Communications</i>, 1989.
  mla: Haeb-Umbach, Reinhold, and Heinrich Meyr. “A Systematic Approach to Carrier
    Recovery and Detection of Digitally Phase Modulated Signals on Fading Channels.”
    <i>IEEE Transactions on Communications</i>, 1989.
  short: R. Haeb-Umbach, H. Meyr, IEEE Transactions on Communications (1989).
date_created: 2019-07-12T05:28:22Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
publication: IEEE Transactions on Communications
status: public
title: A systematic approach to carrier recovery and detection of digitally phase
  modulated signals on fading channels
type: journal_article
user_id: '44006'
year: '1989'
...
---
_id: '11783'
abstract:
- lang: eng
  text: The common basis of coherent and differentially coherent detection is considered
    from the viewpoint of carrier recovery as the estimation of fading distortion.
    In the differentially coherent receiver a simple estimate of the fading distortion
    is used whereas the coherent receiver uses the optimal estimate. The bit error
    rates (BERs) for M-ary PSK (phase-shift keyed) and DPSK (double phase-shift keyed)
    transmission are calculated using a single method of calculation for both detection
    schemes. The calculation takes into account nonperfect carrier recovery, cochannel
    interference, and diversity. The results allow a direct comparison of the two
    schemes and show that coherent detection is preferable in many realistic fading
    environments.
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: 'Haeb-Umbach R. A Comparison of Coherent and Differentially Coherent Detection
    Schemes for Fading Channels. In: <i>International Conference on Vehicular Technology,
    Philadelphia</i>. ; 1988.'
  apa: Haeb-Umbach, R. (1988). A Comparison of Coherent and Differentially Coherent
    Detection Schemes for Fading Channels. In <i>International Conference on Vehicular
    Technology, Philadelphia</i>.
  bibtex: '@inproceedings{Haeb-Umbach_1988, title={A Comparison of Coherent and Differentially
    Coherent Detection Schemes for Fading Channels}, booktitle={International Conference
    on Vehicular Technology, Philadelphia}, author={Haeb-Umbach, Reinhold}, year={1988}
    }'
  chicago: Haeb-Umbach, Reinhold. “A Comparison of Coherent and Differentially Coherent
    Detection Schemes for Fading Channels.” In <i>International Conference on Vehicular
    Technology, Philadelphia</i>, 1988.
  ieee: R. Haeb-Umbach, “A Comparison of Coherent and Differentially Coherent Detection
    Schemes for Fading Channels,” in <i>International Conference on Vehicular Technology,
    Philadelphia</i>, 1988.
  mla: Haeb-Umbach, Reinhold. “A Comparison of Coherent and Differentially Coherent
    Detection Schemes for Fading Channels.” <i>International Conference on Vehicular
    Technology, Philadelphia</i>, 1988.
  short: 'R. Haeb-Umbach, in: International Conference on Vehicular Technology, Philadelphia,
    1988.'
date_created: 2019-07-12T05:28:10Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1988/Conf.Philadelphia_1988_Haeb_paper.pdf
oa: '1'
publication: International Conference on Vehicular Technology, Philadelphia
status: public
title: A Comparison of Coherent and Differentially Coherent Detection Schemes for
  Fading Channels
type: conference
user_id: '44006'
year: '1988'
...
---
_id: '11794'
abstract:
- lang: eng
  text: A digital carrier recovery structure which allows coherent detection on frequency-nonselective
    fading channels is presented. The synchronizer estimates the multiplicative distortion
    introduced by the channel. It is shown that the structure is superior to a phase-locked
    loop and is well suited for a fully digital realization. A detailed synchronizer
    design and simulation results are presented for a land-mobile radio channel. This
    includes a novel scheme for a fully digital frequency offset estimation and correction.
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Heinrich
  full_name: Meyr, Heinrich
  last_name: Meyr
citation:
  ama: 'Haeb-Umbach R, Meyr H. A digital Synchronizer for Linearly Modulated Signals
    Transmitted over a Frequency-Nonselective Fading Channel. In: <i>International
    Conference on Communications, Philadelphia</i>. ; 1988.'
  apa: Haeb-Umbach, R., &#38; Meyr, H. (1988). A digital Synchronizer for Linearly
    Modulated Signals Transmitted over a Frequency-Nonselective Fading Channel. In
    <i>International Conference on Communications, Philadelphia</i>.
  bibtex: '@inproceedings{Haeb-Umbach_Meyr_1988, title={A digital Synchronizer for
    Linearly Modulated Signals Transmitted over a Frequency-Nonselective Fading Channel},
    booktitle={International Conference on Communications, Philadelphia}, author={Haeb-Umbach,
    Reinhold and Meyr, Heinrich}, year={1988} }'
  chicago: Haeb-Umbach, Reinhold, and Heinrich Meyr. “A Digital Synchronizer for Linearly
    Modulated Signals Transmitted over a Frequency-Nonselective Fading Channel.” In
    <i>International Conference on Communications, Philadelphia</i>, 1988.
  ieee: R. Haeb-Umbach and H. Meyr, “A digital Synchronizer for Linearly Modulated
    Signals Transmitted over a Frequency-Nonselective Fading Channel,” in <i>International
    Conference on Communications, Philadelphia</i>, 1988.
  mla: Haeb-Umbach, Reinhold, and Heinrich Meyr. “A Digital Synchronizer for Linearly
    Modulated Signals Transmitted over a Frequency-Nonselective Fading Channel.” <i>International
    Conference on Communications, Philadelphia</i>, 1988.
  short: 'R. Haeb-Umbach, H. Meyr, in: International Conference on Communications,
    Philadelphia, 1988.'
date_created: 2019-07-12T05:28:23Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://groups.uni-paderborn.de/nt/pubs/1988/Conf.Philadelphia_1988_Haeb1_paper.pdf
oa: '1'
publication: International Conference on Communications, Philadelphia
status: public
title: A digital Synchronizer for Linearly Modulated Signals Transmitted over a Frequency-Nonselective
  Fading Channel
type: conference
user_id: '44006'
year: '1988'
...
---
_id: '11795'
author:
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Heinrich
  full_name: Meyr, Heinrich
  last_name: Meyr
citation:
  ama: 'Haeb-Umbach R, Meyr H. Optimal Carrier Recovery and Detection on Frequency-Nonselective
    Fading Channels. In: <i>Proc. Symposium on Inf. Theory and Appl. (SITA), Tokio</i>.
    ; 1987.'
  apa: Haeb-Umbach, R., &#38; Meyr, H. (1987). Optimal Carrier Recovery and Detection
    on Frequency-Nonselective Fading Channels. In <i>Proc. Symposium on Inf. Theory
    and Appl. (SITA), Tokio</i>.
  bibtex: '@inproceedings{Haeb-Umbach_Meyr_1987, title={Optimal Carrier Recovery and
    Detection on Frequency-Nonselective Fading Channels}, booktitle={Proc. Symposium
    on Inf. Theory and Appl. (SITA), Tokio}, author={Haeb-Umbach, Reinhold and Meyr,
    Heinrich}, year={1987} }'
  chicago: Haeb-Umbach, Reinhold, and Heinrich Meyr. “Optimal Carrier Recovery and
    Detection on Frequency-Nonselective Fading Channels.” In <i>Proc. Symposium on
    Inf. Theory and Appl. (SITA), Tokio</i>, 1987.
  ieee: R. Haeb-Umbach and H. Meyr, “Optimal Carrier Recovery and Detection on Frequency-Nonselective
    Fading Channels,” in <i>Proc. Symposium on Inf. Theory and Appl. (SITA), Tokio</i>,
    1987.
  mla: Haeb-Umbach, Reinhold, and Heinrich Meyr. “Optimal Carrier Recovery and Detection
    on Frequency-Nonselective Fading Channels.” <i>Proc. Symposium on Inf. Theory
    and Appl. (SITA), Tokio</i>, 1987.
  short: 'R. Haeb-Umbach, H. Meyr, in: Proc. Symposium on Inf. Theory and Appl. (SITA),
    Tokio, 1987.'
date_created: 2019-07-12T05:28:24Z
date_updated: 2022-01-06T06:51:08Z
department:
- _id: '54'
language:
- iso: eng
publication: Proc. Symposium on Inf. Theory and Appl. (SITA), Tokio
status: public
title: Optimal Carrier Recovery and Detection on Frequency-Nonselective Fading Channels
type: conference
user_id: '44006'
year: '1987'
...
---
_id: '11880'
author:
- first_name: Martin
  full_name: Oerder, Martin
  last_name: Oerder
- first_name: Gerd
  full_name: Ascheid, Gerd
  last_name: Ascheid
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
- first_name: Heinrich
  full_name: Meyr, Heinrich
  last_name: Meyr
citation:
  ama: 'Oerder M, Ascheid G, Haeb-Umbach R, Meyr H. An all digital implementation
    of a receiver for bandwidth-efficient communication. <i>Signal Processing: Theories
    and Applications</i>. 1986.'
  apa: 'Oerder, M., Ascheid, G., Haeb-Umbach, R., &#38; Meyr, H. (1986). An all digital
    implementation of a receiver for bandwidth-efficient communication. <i>Signal
    Processing: Theories and Applications</i>.'
  bibtex: '@article{Oerder_Ascheid_Haeb-Umbach_Meyr_1986, title={An all digital implementation
    of a receiver for bandwidth-efficient communication}, journal={Signal Processing:
    Theories and Applications}, author={Oerder, Martin and Ascheid, Gerd and Haeb-Umbach,
    Reinhold and Meyr, Heinrich}, year={1986} }'
  chicago: 'Oerder, Martin, Gerd Ascheid, Reinhold Haeb-Umbach, and Heinrich Meyr.
    “An All Digital Implementation of a Receiver for Bandwidth-Efficient Communication.”
    <i>Signal Processing: Theories and Applications</i>, 1986.'
  ieee: 'M. Oerder, G. Ascheid, R. Haeb-Umbach, and H. Meyr, “An all digital implementation
    of a receiver for bandwidth-efficient communication,” <i>Signal Processing: Theories
    and Applications</i>, 1986.'
  mla: 'Oerder, Martin, et al. “An All Digital Implementation of a Receiver for Bandwidth-Efficient
    Communication.” <i>Signal Processing: Theories and Applications</i>, 1986.'
  short: 'M. Oerder, G. Ascheid, R. Haeb-Umbach, H. Meyr, Signal Processing: Theories
    and Applications (1986).'
date_created: 2019-07-12T05:30:02Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
language:
- iso: eng
publication: 'Signal Processing: Theories and Applications'
status: public
title: An all digital implementation of a receiver for bandwidth-efficient communication
type: journal_article
user_id: '44006'
year: '1986'
...