6533b834fe1ef96bd129cb83
RESEARCH PRODUCT
Joint Subcarrier and Phase Shifts Optimization for RIS-aided Localization-Communication System
Mingan LuanBo WangZheng ChangTimo HämäläinenZhuang LingFengye Husubject
suorituskykysijaintireconfigurable intelligent surfaceslocation awarenessjoint localization and communication subcarrier assignmentpaikannussystem performancelangaton tekniikkacommunication systemssimulationviestintätekniikkaRIS phase shifts designlangaton tiedonsiirtosimulointimeasurementvehicular and wireless technologiestietojärjestelmätdescription
Joint localization and communication systems have drawn significant attention due to their high resource utilization. In this paper, we consider a reconfigurable intelligent surface (RIS)-aided simultaneously localization and communication system. We first determine the sum squared position error bound (SPEB) as the localization accuracy metric for the presented localization-communication system. Then, a joint RIS discrete phase shifts design and subcarrier assignment problem is formulated to minimize the SPEB while guaranteeing each user’s achievable data rate requirement. For the presented non-convex mixed-integer problem, we propose an iterative algorithm to obtain a suboptimal solution by utilizing the Lagrange duality as well as penalty-based optimization methods. Simulation results are provided to validate the performance of the proposed algorithm. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-06-01 | 2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring) |