Energy Efficient Hybrid Precoding for Adaptive Partially-Connected mmWave Massive MIMO: A Decomposition-Based Approach

被引:4
作者
Zhang, Rui [1 ]
Zhang, Hangyu [1 ]
Li, Yongzhao [1 ]
Ruan, Yuhan [1 ]
Dobre, Octavia A. [2 ]
Song, Nuan [3 ]
Yang, Tao [3 ]
Lu, Yiqing [4 ]
机构
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China
[2] Mem Univ, Dept Elect & Comp Engn, St John, NF A1C 5S7, Canada
[3] Nokia Shanghai Bell, Bell Labs China, Shanghai 201206, Peoples R China
[4] CICT Mobile Commun Technol Co Ltd, Wuhan 430074, Peoples R China
关键词
Energy efficiency; hybrid precoding; millimeter-Wave; massive MIMO; partially-connected; ANTENNA SYSTEMS; DYNAMIC SUBARRAYS; 5G NETWORKS; POWER; OPTIMIZATION; COMPUTATION; DESIGN;
D O I
10.1109/TVT.2023.3293988
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
For the prominent superiority in supporting high-data-rate applications with reduced hardware complexity and energy consumption, hybrid precoding in millimeter-wave (mmWave) massive multi-input multi-output (MIMO) system has attracted considerable attentions recently. To adequately utilize the available antenna resources and reduce power consumption, we investigate energy efficient hybrid precoding for an adaptive partially-connected structure in mmWave massive MIMO system with antenna group overlapping to achieve array gain. Specifically, the energy efficient hybrid precoding is firstly formulated as an energy efficiency (EE) maximizing problem, where the number of active phase shifters, the connection relationship between radio frequency chains and antennas, and precoding matrix are jointly optimized. Then, utilizing the diagonal characteristic of digital precoding in a partially-connected structure, we propose a decomposition-based low-complexity approach to tackle the large-scale mix-integer non-convex EE optimization problem in the fully adaptive hybrid precoding scheme. Besides, to provide further insights on how the EE-oriented design affects the system performance, a partially adaptive scheme is also introduced. Finally, simulation results verify the viability and effectiveness of the proposed schemes.
引用
收藏
页码:15967 / 15980
页数:14
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