Symbiotic Radio Systems: Detection and Performance Analysis

2022-12-25 Author:CUI Ziqi, WANG Gongpu, WANG Zhigang, AI Bo, XIAO Huahua

Abstract: Symbiotic radio (SR) is an emerging green technology for the Internet of Things (IoT). One key challenge of the SR systems is to design efficient and low-complexity detectors, which is the focus of this paper. We first drive the mathematical expression of the optimal maximum-likelihood (ML) detector, and then propose a suboptimal iterative detector with low complexity. Finally, we show through numerical results that our proposed detector can obtain near-optimal bit error rate (BER) performance at a low computational cost.
Keywords: bit error rate; data detection; Internet of Things; symbiotic radio system; wireless communication

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