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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: The Impact of Channel Estimation Errors and Co-antenna Interference on the Performance of a Coded MIMO System | EURASIP Journal on Applied Signal Processing 2005 11 1680-1697 2005 N. Mysore and J. Bajcsy The Impact of Channel Estimation Errors and Co-antenna Interference on the Performance of a Coded MIMO System Naveen Mysore Department of Electrical and Computer Engineering McGill University 3480 University Street Montreal QC Canada H3A 2A7 Email nmysor@tsp.ece.mcgill.ca Jan Bajcsy Department of Electrical and Computer Engineering McGill University 3480 University Street Montreal QC Canada H3A 2A7 Email jbajcsy@tsp. ece.mcgill.ca Received 2 March 2004 Revised 3 September 2004 This paper considers the problem of uplink transmission over multiple-input multiple-output MIMO channels affected by slow frequency-nonselective uncorrelated and correlated Rayleigh fading. We consider the case when channel state information corrupted by estimation errors is available at the receiver only. In this setting we generalize the derivation of our previously proposed linear-complexity MIMO signal detector and derive closed-form expressions for the distribution of its soft outputs and the approximate symbol error probability. Based on this soft decision detector we consider a turbo-coded MIMO uplink architecture with iterative processing which enables performance within 1.6 to 2.8 dB of the ergodic capacity limit and outperforms the T-BLAST turbo-Bell Laboratories layered space-time system by about 10 dB at bit error rates of 10 5. The presented results illustrate that this linear-complexity MIMO signal detector is highly robust to channel estimation errors. Keywords and phrases coded MIMO systems channel estimation errors MIMO signal detection iterative detection and decoding. 1. INTRODUCTION The goal of next-generation wireless systems will be to provide high data rate access on both uplink and downlink transmission scenarios while compensating for the harsh impairments introduced by the radio-frequency channel. Powerful error-correcting codes such as turbo codes 4 have already been .
