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Majorization-minimization aided hybrid transceivers for MIMO interference channels

Majorization-minimization aided hybrid transceivers for MIMO interference channels
Majorization-minimization aided hybrid transceivers for MIMO interference channels
The potential of deploying large-scale antenna arrays in future wireless systems has stimulated extensive research on hybrid transceiver designs aiming to approximate the optimal fully-digital schemes with much reduced hardware cost and signal processing complexity. Generally, this hybrid transceiver structure requires a joint design of analog and digital processing to enable both beam steering and spatial multiplexing gains. In this paper, we develop various weighted mean-square-error minimization (WMMSE) based hybrid transceiver designs for K-user multiple-input multiple-output (MIMO) interference systems, which are applicable to both millimeter wave (mmWave) channels and Rayleigh fading channels. Firstly, a heuristic joint design of hybrid precoder and combiner using alternating optimization is proposed, in which the majorization-minimization (MM) method is utilized to design the analog precoder and combiner under unit-modulus constraints. It is demonstrated that this scheme achieves comparable performance to the fully-digital WMMSE solution. To further reduce the computational complexity, a phase projection based two-stage scheme is proposed to decouple the designs of the analog and digital precoder/combiner. Secondly, inspired by the fully-digital solutions based on the block diagonalization zero-forcing (BD-ZF) and signal-to-leakage-plus-noise ratio (SLNR) criteria, the low-complexity MM-based BDZF and SLNR hybrid designs are proposed, respectively, for approximating the corresponding fully-digital solutions. Thirdly, the partially-connected hybrid structure conceived for reducing system hardware cost and power consumption is considered, for which the MM-based alternating optimization algorithm still works. Our numerical results characterize the sum rate performance of all proposed hybrid designs in comparison to the existing benchmarks.
Hybrid transceiver designs, MIMO interference channels, WMMSE, majorization-minimization
1053-587X
4903-4918
Gong, Shiqi
28581532-77f4-4d05-9bad-1d20682a2730
Xing, Chengwen
25b9b573-243b-49e1-aac6-229b8614f0dc
Lau, Vincent K.N.
3e361254-b33f-46f4-abbb-4cf409f1f66c
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Gong, Shiqi
28581532-77f4-4d05-9bad-1d20682a2730
Xing, Chengwen
25b9b573-243b-49e1-aac6-229b8614f0dc
Lau, Vincent K.N.
3e361254-b33f-46f4-abbb-4cf409f1f66c
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Gong, Shiqi, Xing, Chengwen, Lau, Vincent K.N., Chen, Sheng and Hanzo, Lajos (2020) Majorization-minimization aided hybrid transceivers for MIMO interference channels. IEEE Transactions on Signal Processing, 68, 4903-4918, [9174747]. (doi:10.1109/TSP.2020.3018548).

Record type: Article

Abstract

The potential of deploying large-scale antenna arrays in future wireless systems has stimulated extensive research on hybrid transceiver designs aiming to approximate the optimal fully-digital schemes with much reduced hardware cost and signal processing complexity. Generally, this hybrid transceiver structure requires a joint design of analog and digital processing to enable both beam steering and spatial multiplexing gains. In this paper, we develop various weighted mean-square-error minimization (WMMSE) based hybrid transceiver designs for K-user multiple-input multiple-output (MIMO) interference systems, which are applicable to both millimeter wave (mmWave) channels and Rayleigh fading channels. Firstly, a heuristic joint design of hybrid precoder and combiner using alternating optimization is proposed, in which the majorization-minimization (MM) method is utilized to design the analog precoder and combiner under unit-modulus constraints. It is demonstrated that this scheme achieves comparable performance to the fully-digital WMMSE solution. To further reduce the computational complexity, a phase projection based two-stage scheme is proposed to decouple the designs of the analog and digital precoder/combiner. Secondly, inspired by the fully-digital solutions based on the block diagonalization zero-forcing (BD-ZF) and signal-to-leakage-plus-noise ratio (SLNR) criteria, the low-complexity MM-based BDZF and SLNR hybrid designs are proposed, respectively, for approximating the corresponding fully-digital solutions. Thirdly, the partially-connected hybrid structure conceived for reducing system hardware cost and power consumption is considered, for which the MM-based alternating optimization algorithm still works. Our numerical results characterize the sum rate performance of all proposed hybrid designs in comparison to the existing benchmarks.

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Accepted/In Press date: 17 August 2020
e-pub ahead of print date: 24 August 2020
Published date: 2020
Keywords: Hybrid transceiver designs, MIMO interference channels, WMMSE, majorization-minimization

Identifiers

Local EPrints ID: 443242
URI: http://eprints.soton.ac.uk/id/eprint/443242
ISSN: 1053-587X
PURE UUID: 2dcbef61-84ea-4862-a4b2-c5bbdbe7c1ce
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 18 Aug 2020 16:32
Last modified: 18 Feb 2021 16:36

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Contributors

Author: Shiqi Gong
Author: Chengwen Xing
Author: Vincent K.N. Lau
Author: Sheng Chen
Author: Lajos Hanzo ORCID iD

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