Performance Evaluation of Multi-hop Backscatter Communication Networks over Rayleigh Fading Channels
摘要
This paper investigates the performance of multi-hop backscatter communication networks operating over Rayleigh fading channels. We consider a general multi-hop architecture in which passive backscatter nodes forward information by reflecting incident radio-frequency signals toward the destination. Closed-form expressions for key performance metrics, including outage probability (OP) are derived under realistic fading assumptions. The impact of the number of hops, reflection coefficients, and transmit power of the carrier emitter on system performance is analytically and numerically evaluated. The analytical results reveal the inherent trade-off between coverage extension and reliability in multi-hop backscatter networks. Monte Carlo simulations are conducted to validate the accuracy of the derived expressions. The results demonstrate that an appropriate selection of system parameters can significantly enhance communication reliability over extended distances. These findings provide useful design insights for low-power and large-scale Internet of Things (IoT) applications. We derive the OP of the proposed scheme over Rayleigh fading channels. The results derived are verified by Monte-Carlo simulations.