Energy-Efficient Symbiotic Radio Using Generalized Benders Decomposition

Haoran Peng*, Cheng Yuan Ho, Yen Ting Lin, Li Chun Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

This paper investigates the symbiotic radio (SR) system supported by reconfigurable intelligent surfaces (RIS) to provide shared spectrum. SR Stakeholders share the same infrastructure and spectrum resources, but with different quality of service (QoS) requirements. The objective of this study is to develop a low complexity and global optimization algorithm to maximize the energy efficiency (EE) of the secondary receiver (SRx) and under a required signal-to-interference-plus-noise ratio (SINR) constraint for the primary receiver (PRx). Specifically, we formulate the joint optimization of phase shift, transmission power control, and reflection element scheduling of the RIS-assisted SR system as a nonconvex mixed-integer nonlinear program (MINLP) problem. Then, we relax the nonconvex MINLP problem into an equivalent convex MINLP problem. To this end, we propose an efficient and effective method based on the accelerated generalized Benders decomposition (GBD) algorithm to solve the global-optimal and fast convergence goals. Simulation results show that the proposed GBDbased approach efficiently improves the EE by 41.94% compared to the successive convex approximation (SCA).

Original languageEnglish
Title of host publication2022 IEEE 96th Vehicular Technology Conference, VTC 2022-Fall 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665454681
DOIs
StatePublished - 2022
Event96th IEEE Vehicular Technology Conference, VTC 2022-Fall 2022 - London, United Kingdom
Duration: 26 Sep 202229 Sep 2022

Publication series

NameIEEE Vehicular Technology Conference
Volume2022-September
ISSN (Print)1550-2252

Conference

Conference96th IEEE Vehicular Technology Conference, VTC 2022-Fall 2022
Country/TerritoryUnited Kingdom
CityLondon
Period26/09/2229/09/22

Keywords

  • Generalized bender decomposition
  • Reconfigurable intelligent surface
  • Symbiotic radio

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