Title :
Effect of mismatched SNR on the performance of iterative linear detection in MIMO-OFDM systems
Author :
Wang, Xinglin ; Niu, Kai ; Wu, Weiling ; Zhang, Jie
Author_Institution :
Sch. of Inf. Eng., Beijing Univ. of Posts & Telecommun., China
Abstract :
In this paper, the effect of signal-to-noise ratio (SNR) mismatch on the bit error rate (BER) performance of iterative linear detection in MIMO-OFDM systems based on high-order modulation is investigated. The effect of SNR mismatch on every iteration and different combinations of detecting and decoding schemes is studied in detail. Simulation shows that the performance of iterative linear detection is very sensitive to SNR mismatch regardless of SNR overestimation or underestimation. Furthermore, a simplified iterative linear detection is proposed, which is more insensitive to SNR mismatch nearly without loss of performance.
Keywords :
MIMO systems; OFDM modulation; error statistics; iterative decoding; signal detection; BER performance; MIMO-OFDM systems; bit error rate; high-order modulation; iterative linear detection; mismatched SNR; signal-to-noise ratio; Bit error rate; Filters; Interference cancellation; MIMO; OFDM modulation; Receiving antennas; Signal to noise ratio; Silicon carbide; Transmitters; Turbo codes;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9335-X
DOI :
10.1109/WCNM.2005.1543981
