Active RIS-Aided Massive MIMO Uplink Systems with Low-Resolution ADCs

Zhangjie Peng; Zecheng Lu; Xue Liu; Cunhua Pan; Jiangzhou Wang

Active RIS-Aided Massive MIMO Uplink Systems with Low-Resolution ADCs

Information Theory 2024-04-23 v1 Signal Processing math.IT

Authors: Zhangjie Peng , Zecheng Lu , Xue Liu , Cunhua Pan , Jiangzhou Wang

Abstract

This letter considers an active reconfigurable intelligent surface (RIS)-aided multi-user uplink massive multipleinput multiple-output (MIMO) system with low-resolution analog-to-digital converters (ADCs). The letter derives the closedform approximate expression for the sum achievable rate (AR), where the maximum ratio combination (MRC) processing and low-resolution ADCs are applied at the base station. The system performance is analyzed, and a genetic algorithm (GA)-based method is proposed to optimize the RIS's phase shifts for enhancing the system performance. Numerical results verify the accuracy of the derivations, and demonstrate that the active RIS has an evident performance gain over the passive RIS.

Keywords

reconfigurable intelligent surface mimo communication mimo beamforming

Cite

@article{arxiv.2404.13875,
  title  = {Active RIS-Aided Massive MIMO Uplink Systems with Low-Resolution ADCs},
  author = {Zhangjie Peng and Zecheng Lu and Xue Liu and Cunhua Pan and Jiangzhou Wang},
  journal= {arXiv preprint arXiv:2404.13875},
  year   = {2024}
}

Active RIS-Aided Massive MIMO Uplink Systems with Low-Resolution ADCs

Abstract

Keywords

Cite

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