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大规模天线系统中MRC解码法的性能分析

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Hans Journal of Wireless Communication
Performance Analysis of the MRC Decoder  
for a Massive MIMO System  
Haiquan Wang, Pengyun Wu, Yuyu Jin, Lei Shen  
Schoons Engineering, Hangzhou Dianzi University, Hangzhou  
Email:
Received: Oct. 23rd, 2014; revised: Nov. 17th, 2014; accepted: Nov. 26th, 2014  
Copyright © 2014 by authors and Hans Publishers Inc.  
ons Attribution International License (CC BY).  
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  
工程学院,杭州  
Email:
收稿日期:20141023日;修回日期:20141117日;录用日期:20141126日  
126  

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