Multiuser precoding scheme and achievable rate analysis for massive MIMO system
作者： Weiqiang Tan , Wei Huang , Xi Yang , Zheng Shi , Wen Liu
DOI: 10.1186/S13638-018-1223-1
关键词:
摘要: We analyze the downlink multiuser precoding of massive multiple input output (MIMO) system, where base station (BS) has ideal channel state information (CSI) and adopts three types different linear schemes, i.e., maximum ratio transmission (MRT), zero-forcing (ZF), minimum mean squared error (MMSE). Under a Rayleigh fading channel, we attain exact expressions on achievable rate for these schemes. Moreover, provide several insights rates reveal relation number BS antennas, users, signal-to-noise (SNR) with respectively. It is found in general that increases antennas SNR. To be more specific, MRT scheme much inferior to ZF MMSE schemes tends at fixed high SNR case. On contrary, outperforms low total always does not increase users optimal exists
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