Journal
IEEE WIRELESS COMMUNICATIONS LETTERS
Volume 12, Issue 10, Pages 1677-1681Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LWC.2023.3285391
Keywords
Full-duplex (FD); integrated sensing and communication (ISAC); reconfigurable intelligent surface (RIS)
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This letter explores the application of reconfigurable intelligent surface (RIS) in the integrated sensing and communication network. The objective is to maximize the user equipment's transmission rate by optimizing the base station's transmit beamforming, user equipment's transmit power, and RIS's phase shifts, while satisfying the condition on the minimum required sensing power.
In this letter, we explore the application of reconfigurable intelligent surface (RIS) in the integrated sensing and communication network, where a full-duplex multi-antenna base station (BS) concurrently detects a target and communicates with a user equipment (UE). Our objective is to maximize the UE's transmission rate by jointly optimizing the BS's transmit beamforming, UE's transmit power, and RIS's phase shifts, while satisfying the condition on the minimum required sensing power. We develop a block coordinate ascend-based iterative algorithm to solve the formulated problem, which guarantees the convergence to at least a local optimum. Numerical results show the efficiency of the proposed solution as well as the trade-off between the UE's transmission rate and the required sensing power, along with the efficiency of employing RIS.
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