ADMM Enabled Hybrid Precoding in Wideband Distributed Phased Arrays Based MIMO Systems

Yu Zhang, Yiming Huo, Jinlong Zhan, Dongming Wang, Xiaodai Dong, Xiaohu You

备注：: 5 pages, 5 figures, accepted for publication at the 90th IEEE Vehicular Technology Conference (IEEE VTC Fall 2019)

英文摘要：

Distributed phased arrays based multiple-input multiple-output (DPA-MIMO) is a recently proposed highly reconfigurable architecture enabling both spatial multiplexing and beamforming in millimeter-wave (mmWave) systems. In this work, we focus on coping with the hybrid precoding for the wideband DPA-MIMO system with orthogonal frequency division multiplexing (OFDM) modulation. More specifically, we propose an alternating direction method of multipliers (ADMM) enabled hybrid precoding approach based on an alternating optimization framework, abbreviated to ADMM-AltMin, for such cooperative array-of-subarrays structures. Simulation results show that the proposed ADMM-AltMin method achieves favourable performance with practical quantization of phase shifters taken into account.

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