Title :
Research on an iterative algorithm of LS channel estimation in MIMO OFDM systems
Author :
Qiao, Yantao ; Yu, Songyu ; Su, Pengcheng ; Zhang, Lijun
Author_Institution :
Inst. of Image Commun. & Inf. Process., Shangai Jiaotong Univ., Shanghai, China
fDate :
31 May-2 June 2004
Abstract :
An iterative least square (LS) channel estimation algorithm for MIMO OFDM systems is proposed. Compared with the common LS channel estimation, this algorithm can highly improve the estimation accuracy. Moreover, the low-pass filtering in the time domain reduces AWGN and ICI significantly. This algorithm enables MIMO OFDM systems to work well in mobile situations. Simulation results confirmed good MSE performance of this algorithm.
Keywords :
AWGN; OFDM modulation; adjacent channel interference; antenna arrays; channel estimation; iterative methods; least squares approximations; low-pass filters; mobile radio; AWGN; ICI; MIMO OFDM system; interchannel interference; iterative least square channel estimation algorithm; lowpass filtering; orthogonal frequency division multiplexing; time domain; Bandwidth; Channel estimation; Delay effects; Fading; Iterative algorithms; Least squares approximation; MIMO; OFDM; Receiving antennas; Transmitting antennas;
Conference_Titel :
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
Print_ISBN :
0-7803-7938-1
DOI :
10.1109/CASSET.2004.1321991
