Title :
Iterative Channel Estimation based on Linear Regression for a MIMO-OFDM system
Author :
Le Saux, Benoît ; Helard, Maryline
Author_Institution :
France Telecom R&D, Cesson-Sevigne
Abstract :
Multiple-input multiple-output (MIMO) systems combined with orthogonal frequency-division multiplexing (OFDM) receive a great deal of attention due to its great potential in achieving high data rates in wireless communications. Nevertheless for coherent detection systems, performance of these MIMO-OFDM systems can severely degrade due to inaccurate channel estimation especially over frequency-selective fast-varying channels. In this paper, we address a MIMO-OFDM coherent transmission with a pilot aided turbo channel estimation improved by addition of a linear regression algorithm in the iterative process. The efficiency of the proposed channel estimation is demonstrated over fast time varying channels thanks to comparison with other turbo-channel estimation systems
Keywords :
MIMO systems; OFDM modulation; channel estimation; iterative methods; radiocommunication; regression analysis; time-varying channels; wireless channels; MIMO-OFDM system; coherent detection system; fast time varying channel; iterative channel estimation; linear regression algorithm; multiple-input multiple-output system; orthogonal frequency-division multiplexing; pilot aided turbo channel estimation; wireless communication; Channel estimation; Degradation; Frequency division multiplexing; Frequency estimation; Iterative algorithms; Linear regression; MIMO; OFDM; Time varying systems; Wireless communication;
Conference_Titel :
Wireless and Mobile Computing, Networking and Communications, 2006. (WiMob'2006). IEEE International Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0494-0
DOI :
10.1109/WIMOB.2006.1696362
