Joint Symbol-Level Precoding and Radiation Pattern Design for Downlink Reconfigurable MIMO

被引:0
作者
Wang, Haonan [1 ,2 ]
Zhang, Lei [1 ,2 ]
Liang, Mu [1 ,2 ]
Li, Ang [1 ,2 ]
Liu, Feng [3 ]
Li, Yonghui [4 ]
Song, Lingyang [5 ]
机构
[1] Xi An Jiao Tong Univ, Fac Elect & Informat Engn, Sch Informat & Commun Engn, Shaanxi 710049, Peoples R China
[2] Xidian Univ, State Key Lab Integrated Serv Networks, Sch Informat & Commun Engn, Xian 710071, Shaanxi, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Mat Sci & Engn, Shaanxi Int Res Ctr Soft Matter, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
[4] Univ Sydney, Sch Elect & Informat Engn, Sydney, NSW 2006, Australia
[5] Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China
基金
中国国家自然科学基金;
关键词
Antenna radiation patterns; MIMO communication; Wireless communication; Antenna arrays; Precoding; Interference; Vectors; Pattern reconfigurable MIMO; symbol-level precoding; constructive interference; pattern design; optimization; programmable metasurface; INTERFERENCE EXPLOITATION; ANTENNA-ARRAY; CAPACITY; MULTIPATH; SELECTION; ESPAR; GAIN; LAWS;
D O I
10.1109/TWC.2024.3368704
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
Pattern reconfigurable multiple-input multiple-output (PR-MIMO) can manipulate the wireless channel according to different communication requirements. In this paper, we discuss the potential of constructive interference (CI)-based symbol-level precoding (CI-SLP) in PR-MIMO communication systems. The joint design problem that optimizes the SLP strategy and the radiation pattern of PR-MIMO for phase-shift keying (PSK) modulation is formulated to maximize the worst serviced user's communication quality. Since the optimization variables are softly-coupled, we employ the alternating optimization framework to decompose the joint design problem into the SLP design sub-problem and the pattern design sub-problem. We simplify the pattern design sub-problem and propose an interior-point algorithm, where a sequential optimization-based scheme is further proposed as a sub-optimal solution with low complexity. Furthermore, the discussion is extended to quadrature amplitude modulation (QAM) modulated systems, where a special stopping criterion is proposed to guarantee the performance gain of the proposed scheme. The practical realization of the designed reconfigurable antenna array is also discussed, where we propose a design scheme using programmable metasurface antennas based on time-division switching to enable quick and adaptive pattern reconfiguration. Numerical results demonstrate that the radiation pattern configurability can further enhance the benefit of SLP over conventional precoding approaches.
引用
收藏
页码:10104 / 10120
页数:17
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