2016
Vázquez, Manuel A; Míguez, Joaquín
On the Use of the Channel Second-Order Statistics in MMSE Receivers for Time- and Frequency-Selective MIMO Transmission Systems Artículo de revista
En: EURASIP Journal on Wireless Communications and Networking, vol. 2016, no 1, 2016.
Resumen | Enlaces | BibTeX | Etiquetas: data estimation, Joint channel, Journal, MIMO, MMSE, Second-order statistics
@article{Vazquez2016,
title = {On the Use of the Channel Second-Order Statistics in MMSE Receivers for Time- and Frequency-Selective MIMO Transmission Systems},
author = {Manuel A V\'{a}zquez and Joaqu\'{i}n M\'{i}guez},
url = {http://jwcn.eurasipjournals.springeropen.com/articles/10.1186/s13638-016-0768-0},
doi = {10.1186/s13638-016-0768-0},
year = {2016},
date = {2016-12-01},
journal = {EURASIP Journal on Wireless Communications and Networking},
volume = {2016},
number = {1},
publisher = {Springer International Publishing},
abstract = {Equalization of unknown frequency- and time-selective multiple input multiple output (MIMO) channels is often carried out by means of decision feedback receivers. These consist of a channel estimator and a linear filter (for the estimation of the transmitted symbols), interconnected by a feedback loop through a symbol-wise threshold detector. The linear filter is often a minimum mean square error (MMSE) filter, and its mathematical expression involves second-order statistics (SOS) of the channel, which are usually ignored by simply assuming that the channel is a known (deterministic) parameter given by an estimate thereof. This appears to be suboptimal and in this work we investigate the kind of performance gains that can be expected when the MMSE equalizer is obtained using SOS of the channel process. As a result, we demonstrate that improvements of several dBs in the signal-to-noise ratio needed to achieve a prescribed symbol error rate are possible.},
keywords = {data estimation, Joint channel, Journal, MIMO, MMSE, Second-order statistics},
pubstate = {published},
tppubtype = {article}
}
Equalization of unknown frequency- and time-selective multiple input multiple output (MIMO) channels is often carried out by means of decision feedback receivers. These consist of a channel estimator and a linear filter (for the estimation of the transmitted symbols), interconnected by a feedback loop through a symbol-wise threshold detector. The linear filter is often a minimum mean square error (MMSE) filter, and its mathematical expression involves second-order statistics (SOS) of the channel, which are usually ignored by simply assuming that the channel is a known (deterministic) parameter given by an estimate thereof. This appears to be suboptimal and in this work we investigate the kind of performance gains that can be expected when the MMSE equalizer is obtained using SOS of the channel process. As a result, we demonstrate that improvements of several dBs in the signal-to-noise ratio needed to achieve a prescribed symbol error rate are possible.