On the Uplink Detection Performance in Large Scale MU-MIMO Systems with Different Scenarios

Amr A. Alammari, M. Sharique, A. A. Moinuddin
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Abstract

In this paper, a very large-scale antenna Multiple input multiple output (MIMO) system to accommodate multi users is considered in a single cell uplink scenario. Each user has a single antenna and all the users are uniformly distributed in the cell. Maximum Ratio Combining (MRC) and Zero forcing (ZF) linear detectors are considered at the base station (BS). Uplink achievable rate performance over Rayleigh fading channel has been evaluated considering both the channel certainty and channel uncertainty conditions. The effect of the power scaling on the achievable rate performance of the two linear receivers has also been investigated. The comparative analyses on the uplink achievable rate of MRC detector with ZF detector have been discussed. Simulation results show that the increase in the number of users will result in increasing the gap between the two detectors performance. Performance in terms of Average Bit Error rate (ABER) of the linear detectors in large-scale MIMO has been also evaluated by considering only the channel certainty condition. The effect of increasing the antenna count and average transmit power on the ABER in the uplink scenario have been considered, as well.
不同场景下大规模MU-MIMO系统上行链路检测性能研究
本文研究了一种在单蜂窝上行场景下容纳多用户的超大规模天线多输入多输出(MIMO)系统。每个用户有一个天线,所有用户均匀分布在小区内。在基站(BS)中考虑了最大比组合(MRC)和零强迫(ZF)线性检测器。考虑信道确定性和信道不确定性条件,对瑞利衰落信道下的上行可达速率性能进行了评价。研究了功率比例对两种线性接收机的可达速率性能的影响。讨论了MRC探测器与ZF探测器上行可达速率的比较分析。仿真结果表明,用户数量的增加会导致两种检测器之间的性能差距增大。在仅考虑信道确定性条件下,对大规模MIMO中线性检测器的平均误码率(ABER)性能进行了评价。同时考虑了上行场景下增加天线数和平均发射功率对ABER的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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