POWER BEACON-ASSISTED ENERGY HARVESTING IN D2D NETWORK UNDER CO-CHANNEL INTERFERENCES: SYMBOL ERROR RATE ANALYSIS

(Received: 15-Aug.-2025, Revised: 15-Oct.-2025 , Accepted: 1-Nov.-2025)

Authors Nguyen Quang Sang, Tran Cong Hung, Ngoc-Long Nguyen, Bui Vu Minh, Lubos Rejfek,

Keywords #Co-channel interference #Energy harvesting #Device-to-device #Symbol error rate

Abstract This paper studies the symbol error rate (SER) performance of a wireless-powered device-to-device (D2D) communication system operating under a time-switching (TS) protocol in the presence of multiple co-channel interferers (CCI). The considered model involves a battery-less source harvesting energy from multiple dedicated power beacons and transmitting to a multi-antenna destination over quasi-static Rayleigh fading channels. Both selection combining ( �� ) and maximal ratio combining ( �� ) schemes are examined at the destination. In addition to the SER analysis, the outage probability (OP) performance is also investigated based on the derived cumulative distribution functions (CDFs), providing a complementary perspective on system reliability. The analysis focuses on the impact of key system parameters, including the interference power level, interferer-to- destination distance, energy harvesting efficiency, and modulation type, on the overall performance. Comprehensive simulation results are presented to validate the analytical derivations and to demonstrate the effects of these parameters on both SER and OP. The obtained results offer valuable insights into the design of energy-constrained D2D systems operating in spectrum-sharing environments, serving as a reference for future enhancements and practical deployments.

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