Performance bounds for channel tracking algorithms for MIMO systems

被引：1

作者：

Ehrenberg, Livnat ^{[1
]}

Gannot, Sharon ^{[1
]}

Leshem, Amir ^{[1
]}

Zehavi, Ephraim ^{[1
]}

机构：

[1] Bar Ilan Univ, Sch Engn, Ramat Gan, Israel

来源：

2008 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, VOLS 1-12 | 2008年

关键词：

time-varying channels; communication system performance; tracking; kalman filtering; MIMO systems;

D O I：

10.1109/ICASSP.2008.4518302

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In this paper(1) we derive performance bounds for tracking time-varying OFDM multiple-input multiple-output (MIMO) communication channel in the presence of additive white Gaussian noise (AWGN). We discuss two channel tracking schemes. The first tracks the filter coefficients directly in time-domain, while the second separately tracks each tone in the frequency-domain. The Kalman filter, with known channel statistics, is utilized for evaluating the performance bounds. It is shown that the time-domain tracking scheme, which exploits the sparseness of the channel impulse response, outperforms the computationally more efficient, frequency-domain tracking scheme, which does not exploit the smooth frequency response of the channel.

引用

页码：3085 / 3088

页数：4

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