OFDM Channel Estimation Based on Combined Estimation in Time and Frequency Domain
R. Haeb-Umbach, M. Bevermeier, in: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), 2007, pp. III-277-III–280.
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Author
Haeb-Umbach, ReinholdLibreCat;
Bevermeier, Maik
Abstract
In this paper we present a novel channel impulse response estimation technique for block-oriented OFDM transmission based on combining estimators: the estimates provided by a Kalman filter operating in the time domain and a Wiener filter in the frequency domain are optimally combined by taking into account their estimated error covariances. The resulting estimator turns out to be identical to the MAP estimator of correlated jointly Gaussian mean vectors. Different variants of the proposed scheme are experimentally investigated in an EEEE 802.11a-like system setup. They compare favourably with known approaches from the literature resulting in reduced mean square estimation error and bit error rate. Further, robustness and complexity issues are discussed
Keywords
bit error rate;
block-oriented OFDM transmission;
channel estimation;
channel impulse response estimation;
combining estimators;
error statistics;
frequency domain estimation;
Gaussian mean vectors;
Gaussian processes;
Kalman filter;
Kalman filters;
MAP estimator;
maximum likelihood estimation;
OFDM channel estimation;
OFDM modulation;
time domain estimation;
time-frequency analysis;
Wiener filter;
Wiener filters
Publishing Year
Proceedings Title
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007)
Volume
3
Page
III-277-III-280
LibreCat-ID
Cite this
Haeb-Umbach R, Bevermeier M. OFDM Channel Estimation Based on Combined Estimation in Time and Frequency Domain. In: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007). Vol 3. ; 2007:III-277-III-280. doi:10.1109/ICASSP.2007.366526
Haeb-Umbach, R., & Bevermeier, M. (2007). OFDM Channel Estimation Based on Combined Estimation in Time and Frequency Domain. In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007) (Vol. 3, pp. III-277-III–280). https://doi.org/10.1109/ICASSP.2007.366526
@inproceedings{Haeb-Umbach_Bevermeier_2007, title={OFDM Channel Estimation Based on Combined Estimation in Time and Frequency Domain}, volume={3}, DOI={10.1109/ICASSP.2007.366526}, booktitle={IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007)}, author={Haeb-Umbach, Reinhold and Bevermeier, Maik}, year={2007}, pages={III-277-III–280} }
Haeb-Umbach, Reinhold, and Maik Bevermeier. “OFDM Channel Estimation Based on Combined Estimation in Time and Frequency Domain.” In IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), 3:III-277-III–280, 2007. https://doi.org/10.1109/ICASSP.2007.366526.
R. Haeb-Umbach and M. Bevermeier, “OFDM Channel Estimation Based on Combined Estimation in Time and Frequency Domain,” in IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), 2007, vol. 3, pp. III-277-III–280.
Haeb-Umbach, Reinhold, and Maik Bevermeier. “OFDM Channel Estimation Based on Combined Estimation in Time and Frequency Domain.” IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), vol. 3, 2007, pp. III-277-III–280, doi:10.1109/ICASSP.2007.366526.
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