Effect of Mismatched SNR on the Performance of Iterative Linear Detection in MIMO-OFDM Systems

摘要：

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.

关键词： SNR mismatch MIMO-OFDM linear detection iterative linear detection 16QAM MMSE match filter (MF)

作者: Xinglin Wang Kai Niu Weiling Wu Jie Zhang

作者单位: School of Information Engineering Beijing University of Posts and Telecommunications Beijing, China Corporate Technology Siemens Ltd.China Beijing, China

会议类型: 国际会议

会议名称: 2005年无线通信、网络和移动计算国际会议

会议地点: 武汉

会议语种:英文

页码: 52-56

在线出版日期: 2005-09-23（万方平台首次上网日期，不代表论文的发表时间）