Title :
Effect of Channel Estimation Errors on the Performance of MIMO-OFDM Systems in Correlated Fading Channels
Author :
Chung, Jaeho ; Park, Se-Jun ; Lee, Seong-Choon
Author_Institution :
Network Infra Lab., Korea Telecom
Abstract :
In this paper, we investigate the effect of inaccurate channel estimation on the bit error rate (BER) performance of the convolutionally coded MIMO-OFDM systems with multilevel quadrature amplitude modulation (M-QAM, M=16, 64) and different diversity orders, particularly in spatially correlated fading channels. It is shown that, in a highly correlated fading channel, the 16-QAM system employing increased diversity order is remarkably more sensitive to the channel estimation errors than the same system but with the 64-QAM. On the other hand, when the fading correlation of the channel is low, the 16-QAM system with antenna diversity appears to become more robust to the channel estimation errors than the 64-QAM system with the same antenna diversity in terms of the BER performance
Keywords :
MIMO communication; OFDM modulation; channel estimation; convolutional codes; correlation methods; diversity reception; error statistics; fading channels; quadrature amplitude modulation; BER; M-QAM; MIMO-OFDM system; antenna diversity; bit error rate performance; channel estimation; convolutional code; multilevel quadrature amplitude modulation; multiple input multiple output; orthogonal frequency division multiplexing; spatial correlated fading channel; Bit error rate; Channel estimation; Convolution; Fading; Laboratories; MIMO; Receiving antennas; Research and development; Telecommunications; Transmitters; Channel Estimation Error; Correlated Fading Channel; MIMO; OFDM; Spatial Multiplexing;
Conference_Titel :
Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on
Conference_Location :
Ottawa, Ont.
Print_ISBN :
1-4244-0038-4
Electronic_ISBN :
1-4244-0038-4
DOI :
10.1109/CCECE.2006.277555
