大规模天线系统中MRC解码法的性能分析.pdfVIP

Hans Journal of Wireless Communications 无线通信, 2014, 4, 126-135 Published Online December 2014 in Hans. /journal/hjwc /10.12677/hjwc.2014.46020 Performance Analysis of the MRC Decoder for a Massive MIMO System Haiquan Wang, Pengyun Wu, Yuyu Jin, Lei Shen School of Communications Engineering, Hangzhou Dianzi University, Hangzhou Email: lywpy@ rd th th Received: Oct. 23 , 2014; revised: Nov. 17 , 2014; accepted: Nov. 26 , 2014 Copyright © 2014 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract Based on a massive multiple-input, multiple-output (MIMO) uplink system, the pair-wise error probability (PEP) of the maximal ratio combining (MRC) decoder on the receiver is analyzed. The channel is assumed to be slow flat fading, and the base station (BS) knows the instant channel state information. Firstly, the MRC decoder is defined for the system. Secondly, a formula calculat- ing the PEP of the system with the decoder is derived. Thirdly, asymptotic analyses of the PEP based on two different situations are given. These analyses reveal facts: 1) The PEP cannot go to zero even when signal-to-noise (SNR) goes to infinity; 2) The PEP goes to zero when the number of antennas at BS is increased to infinity and SNR is fixed. Finally, power scale law on PEP is dis- cussed. Numerical simulations firm the above conclusions. Keywords Massive MIMO, Maximal Ratio Combining, Pair-Wise Error Probability, Slow Flat Fading, Channel State Information 大规模天线系统中MRC解码法的性能分析 王海泉，吴鹏云，金瑜瑜，沈 雷 杭州电子科技大学通信工程学院，杭