Beamforming and resource allocation for reconfigurable intelligent surface assisted wireless powered communication network

针对未来物联网中众多无线传感设备面临的能量受限问题、服务质量(quality of service, QoS)需求方面存在差异,以及无线供电通信网络(wireless powered communication network, WPCN)中普遍存在的“双远近”问题,本文研究了一种智能超表面(reconfigurable intelligent surface, RIS)辅助分离架构的WPCN系统模型,通过联合优化有源波束成型、无源波束成型和资源分配,旨在最大化设备的加权和能量效率.针对优化问题,提出了一种基于加速近端距离算法(accelerated proximal distance algorithm, A-PDA)的波束成型与资源分配方案.该方案利用分式规划解耦优化问题,交替优化各个子问题,直至收敛得到最终解,其中首次采用A-PDA得到RIS相移矢量的闭式解.仿真结果表明,相较于经典优化方案,所提方案能够快速收敛,有效降低了平均运行时间,并且表现出优异的加权和能效性能,尤其在小发射功率场景下的能效提升更为显著.

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Publication Details

Journal
Scientia Sinica Informationis
Published
2025-06-11
DOI
https://doi.org/10.1360/ssi-2024-0388
Primary Topic
Advanced Wireless Communication Technologies
Type
article
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article

Beamforming and resource allocation for reconfigurable intelligent surface assisted wireless powered communication network

Yingxin Guo, Yi Guo, Gang Liu, Shaozhong Fu
Scientia Sinica Informationis
Advanced Wireless Communication Technologies
article

Beamforming and resource allocation for reconfigurable intelligent surface assisted wireless powered communication network

Yingxin Guo, Yi Guo, Gang Liu, Shaozhong Fu
article en

Abstract

针对未来物联网中众多无线传感设备面临的能量受限问题、服务质量(quality of service, QoS)需求方面存在差异,以及无线供电通信网络(wireless powered communication network, WPCN)中普遍存在的“双远近”问题,本文研究了一种智能超表面(reconfigurable intelligent surface, RIS)辅助分离架构的WPCN系统模型,通过联合优化有源波束成型、无源波束成型和资源分配,旨在最大化设备的加权和能量效率.针对优化问题,提出了一种基于加速近端距离算法(accelerated proximal distance algorithm, A-PDA)的波束成型与资源分配方案.该方案利用分式规划解耦优化问题,交替优化各个子问题,直至收敛得到最终解,其中首次采用A-PDA得到RIS相移矢量的闭式解.仿真结果表明,相较于经典优化方案,所提方案能够快速收敛,有效降低了平均运行时间,并且表现出优异的加权和能效性能,尤其在小发射功率场景下的能效提升更为显著.

Scientia Sinica InformationisVol. 56(1)
Openalex Percentile: Top 89%
Advanced Wireless Communication Technologies
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