Joint Beamforming Design for STAR-RIS-Aided MU-MIMO System with SWIPT

IEEE International Conference on Communications workshops, pp. 574–579

Abstract

This paper investigates the resource allocation problem in a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided simultaneous wireless information and power transfer (SWIPT) system. Specifically, the considered system is motivated by the smart interference management of STAR-RIS with extended coverage capability and energy-efficient communication for the information receivers and intelligent power transfer to energy receivers present in private industry networks. We focus on the problem of power minimization for the STAR-aided SWIPT system via a joint beamforming design at the BS and STAR-RIS while guaranteeing the minimum QoS for SWIPT. To solve the formulated problem, we first transform the problem into a simplified form and later propose an alternating optimization framework to solve the problems of beamforming design at BS and STAR-RIS independently and iteratively. Simulation results confirm that STAR-RIS can significantly reduce the required transmission power approximately by 15-20% when compared to conventional RIS while satisfying given QoS constraints for SWIPT systems.

Authors 6

1. Jetti Yaswanth

   National Sun Yat-sen University

   Affiliation as printed

   IMPTE, National Sun Yat-sen University,Kaohsiung,Taiwan,804

2. Mayur Vitthalrao Katwe

   National Sun Yat-sen University

   Affiliation as printed

   Institute of Communications Engineering, National Sun Yat-sen University,Kaohsiung,Taiwan,804

3. Keshav Kumar Singh

   National Sun Yat-sen University

   Affiliation as printed

   IMPTE, National Sun Yat-sen University,Kaohsiung,Taiwan,804

   Institute of Communications Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan

4. Omid Taghizadeh
   Affiliation as printed

   Lenovo Deutschland GmbH,5G Wireless Research Group,Germany

   5G Wireless Research Group, Lenovo Deutschland GmbH, Germany

5. Anke Schmeink Aachen Chair of Information Theory and Data Analytics

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Chair of Information Theory and Data Analytics,Aachen,Germany,52062

6. Cunhua Pan

   Southeast University

   Affiliation as printed

   Southeast University,National Mobile Communications Research Laboratory,Nanjing,China,210096