RIS辅助的多小区无线信息能量协同传输方案

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关键词：可重构智能反射面；非视距传输；无线携能通信；能量采集；交替优化 中图分类号：TN929.5 文献标志码：A 文章编号：1001-3695（2025）12-026-3732-05 doi： 10.19734/j. issn.1001-3695.2025.05.0149

RIS-assisted multi-cell wireless information and energy cooperative transmission scheme

Ding Yunqi，Chen Donghua†，Chen Jiafan，Liu Shilong （CollegeofPhysicsandElectronicEngineering，HuaibeiNormal University，HuaibeiAnhui235Ooo，China）

Abstract：ThispaperaddressedtheenergyharvestingchallngeforIoTdevicesinsignalblindzonescausedbyseverepath loss.It developeda RIS-assistedcoodinatedmultipoint（CoMP）simultaneous wirelessinformationandpower transfer scheme.The scheme maximized harvested energyunder constraints of minimum communication rate forinformation users， maximumtransmit power atbasestations，andRIS phase shift matrices.The altermating optimization algorithm decomposed the coupled-variableprobleminto twosubproblems.To solvethese non-convexsubproblems，the method employed semi-definite relaxationandsuccessiveconvexapproximationforiterativeoptimization.Specificall，apinching-likecriterionhandled the unit-modulus constraints of RIS phase shift matrices.Simulation results demonstrate an 86.9% convergence performance improvementover existing methods.The proposedapproach exhibitslow complexityandrapid convergence，providing the proposed approach has an effective solution for power-constrained devices in blind zones.

Key words：reconfigurable intelligentsurface（RIS）；non-lineof sight transmisson；simultaneous wirelessinformationandpowertransfer（SWIPT）；energy harvesting（EH）；alternating optimization（AO）

0 引言

无线通信技术的迅猛发展加速了泛在物联网（Internetofthings，IoT）的大规模应用[1]。（剩余12001字）