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 (SC) and maximal ratio combining (MRC) schemes are examined at the destination. 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 SER performance. 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.

Key words: Co-channel interference; energy harvesting; device-to-device; symbol error rate.