Multi-Pair D2D Communications Aided by an Active RIS Over Spatially Correlated Channels With Phase Noise

被引：13
作者：
Peng, Zhangjie [1 ,2 ,3 ]
Liu, Xue [1 ]
Pan, Cunhua [3 ]
Li, Li [1 ]
Wang, Jiangzhou [4 ]
机构：
[1] Shanghai Normal Univ, Coll Informat Mech & Elect Engn, Shanghai 200234, Peoples R China
[2] Shanghai Normal Univ, Shanghai Engn Res Ctr Intelligent Educ & Bigdata, Shanghai 200234, Peoples R China
[3] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China
[4] Univ Kent, Sch Engn, Canterbury CT2 7NT, Kent, England
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2022年 / 11卷 / 10期
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
Device-to-device communication; Rician channels; Phase noise; Correlation; Power control; Fading channels; Closed-form solutions; Reconfigurable intelligent surface (RIS); active RIS; device-to-device (D2D) communication; ergodic sum rate; phase noise; spatial correlation; power control; RECONFIGURABLE INTELLIGENT SURFACES; SYSTEMS;
D O I：
10.1109/LWC.2022.3193868
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter investigates a multi-pair device-to-device (D2D) communication system aided by an active reconfigurable intelligent surface (RIS) with phase noise and direct link. The approximate closed-form expression of the ergodic sum rate is derived over spatially correlated Rician fading channels with statistical channel state information (CSI). When the Rician factors go to infinity, the asymptotic expressions of the ergodic sum rates are presented to give insights in poor scattering environment. The power scaling law for the special case of a single D2D pair is presented without phase noise under uncorrelated Rician fading condition. Then, to solve the ergodic sum rate maximization problem, a method based on genetic algorithm (GA) is proposed for joint power control and discrete phase shifts optimization. Simulation results verify the accuracy of our derivations, and also show that the active RIS outperforms the passive RIS.
引用
收藏
页码：2090 / 2094
页数：5
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