Computer Science > Networking and Internet Architecture
[Submitted on 30 Jun 2023
]
Title: Clipping noise cancellation receiver for the downlink of massive MIMO OFDM system
Title: 大规模MIMO OFDM系统下行链路的剪切噪声消除接收机
Abstract: Massive multiple-input multiple-output (mMIMO) technology is considered a key enabler for the 5G and future wireless networks. In most wireless communication systems, mMIMO is employed together with orthogonal frequency-division multiplexing (OFDM) which exhibits a high peak-to-average-power ratio (PAPR). While passing the OFDM signal through one of the common RF front-ends of limited linearity, significant distortion of the transmitted signal can be expected. In mMIMO systems, this problem is still relevant as in some channels the distortion component is beamformed in the same directions as the desired signal. In this work, we propose a multi-antenna clipping noise cancellation (MCNC) algorithm for the downlink of the mMIMO OFDM system. Computer simulations show it can remove nonlinear distortion even under severe nonlinearity. Next, a simplified version of the algorithm is proposed. It was observed that for the direct visibility channels, its performance is only slightly degraded with respect to the MCNC algorithm.
Submission history
From: Pawel Kryszkiewicz [view email][v1] Fri, 30 Jun 2023 08:00:58 UTC (4,319 KB)
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