Joint Receive Antenna Selection and Beamforming in RIS-Aided MIMO Systems

This work studies a low-complexity design for re-configurable intelligent surface (RIS)-aided multiuser multiple-input multiple-output systems. The base station (BS) applies receive antenna selection to connect a subset of its antennas to the available radio frequency chains. For this setting, the B...

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Bibliographic Details
Main Authors: Ouyang, Chongjun, Bereyhi, Ali, Asaad, Saba, Liu, Yuanwei, Zhang, Xingqi, Muller, Ralf R.
Format: Conference Proceeding
Language:English
Subjects:
Array signal processing
Base stations
Benchmark testing
Complexity theory
Iterative methods
Multiuser multiple-input multiple-output
receive antenna selection
Receiving antennas
reconfigurable intelligent surfaces
Switches
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Summary:This work studies a low-complexity design for re-configurable intelligent surface (RIS)-aided multiuser multiple-input multiple-output systems. The base station (BS) applies receive antenna selection to connect a subset of its antennas to the available radio frequency chains. For this setting, the BS switching network, uplink precoders, and RIS phase-shifts are jointly designed, such that the uplink sum-rate is maximized. The principle design problem reduces to an NP-hard mixed-integer optimization. We hence invoke the weighted minimum mean squared error technique and the penalty dual decomposition method to develop a tractable iterative algorithm that approxi-mates the optimal design effectively. Our numerical investigations verify the efficiency of the proposed algorithm and its superior performance as compared with the benchmark.
ISSN:1938-1883
DOI:10.1109/ICC51166.2024.10622923