Statistical CSI-based Design for Reconfigurable Intelligent Surface-aided Massive MIMO Systems with Direct Links

Kangda Zhi; Cunhua Pan; Hong Ren; Kezhi Wang

Statistical CSI-based Design for Reconfigurable Intelligent Surface-aided Massive MIMO Systems with Direct Links

Information Theory 2021-02-16 v3 Signal Processing math.IT

Authors: Kangda Zhi , Cunhua Pan , Hong Ren , Kezhi Wang

Abstract

This paper investigates the performance of reconfigurable intelligent surface (RIS)-aided massive multiple-input multiple-output (MIMO) systems with direct links, and the phase shifts of the RIS are designed based on the statistical channel state information (CSI). We first derive the closed-form expression of the uplink ergodic data rate. Then, based on the derived expression, we use the genetic algorithm (GA) to solve the sum data rate maximization problem. With low-complexity maximal-ratio combination (MRC) and low-overhead statistical CSI-based scheme, we validate that the RIS can still bring significant performance gains to traditional massive MIMO systems.

Keywords

reconfigurable intelligent surface mimo beamforming

Cite

@article{arxiv.2012.07030,
  title  = {Statistical CSI-based Design for Reconfigurable Intelligent Surface-aided Massive MIMO Systems with Direct Links},
  author = {Kangda Zhi and Cunhua Pan and Hong Ren and Kezhi Wang},
  journal= {arXiv preprint arXiv:2012.07030},
  year   = {2021}
}

Comments

Accepted by IEEE Wireless Communications Letters. Keywords: Intelligent Reflecting Surface (IRS), reconfigurable intelligent surface (RIS)

Statistical CSI-based Design for Reconfigurable Intelligent Surface-aided Massive MIMO Systems with Direct Links

Abstract

Keywords

Cite

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