A Novel Wireless Communication Paradigm for Intelligent Reflecting Surface Based Symbiotic Radio Systems

Hua M, Wu Q, Yang L, Schober R, Poor HV (2022)

Publication Type: Journal article

Publication year: 2022

Journal

IEEE Transactions on Signal Processing Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 70

Pages Range: 550-565

DOI: 10.1109/TSP.2021.3135603

Abstract

This paper investigates a novel intelligent reflecting surface (IRS)-based symbiotic radio (SR) system architecture consisting of a transmitter, an IRS, and an information receiver (IR). The primary transmitter communicates with the IR and at the same time assists the IRS in forwarding information to the IR. Based on the IRS's symbol period, we distinguish two scenarios, namely, commensal SR (CSR) and parasitic SR (PSR), where two different techniques for decoding the IRS signals at the IR are employed. We formulate bit error rate (BER) minimization problems for both scenarios by jointly optimizing the active beamformer at the base station and the phase shifts at the IRS, subject to a minimum primary rate requirement. Specifically, for the CSR scenario, a penalty-based algorithm is proposed to obtain a high-quality solution, where semi-closed-form solutions for the active beamformer and the IRS phase shifts are derived based on Lagrange duality and Majorization-Minimization methods, respectively. For the PSR scenario, we apply a bisection search-based method, successive convex approximation, and difference of convex programming to develop a computationally efficient algorithm, which converges to a locally optimal solution. Simulation results demonstrate the effectiveness of the proposed algorithms and show that the proposed SR techniques are able to achieve a lower BER than benchmark schemes.

Authors with CRIS profile

Robert Schober Lehrstuhl für Digitale Übertragung

Involved external institutions

University of Macau (UM) / Universidade de Macau / 澳門大學 MO Macao (MO) Southeast University / 东南大学 CN China (CN) Princeton University US United States (USA) (US)

How to cite

APA:

Hua, M., Wu, Q., Yang, L., Schober, R., & Poor, H.V. (2022). A Novel Wireless Communication Paradigm for Intelligent Reflecting Surface Based Symbiotic Radio Systems. IEEE Transactions on Signal Processing, 70, 550-565. https://dx.doi.org/10.1109/TSP.2021.3135603

MLA:

Hua, Meng, et al. "A Novel Wireless Communication Paradigm for Intelligent Reflecting Surface Based Symbiotic Radio Systems." IEEE Transactions on Signal Processing 70 (2022): 550-565.

BibTeX: Download