Performance Analysis of Hybrid Protocol Based AF EH Relaying over Asymmetric Fading Channels

• Main Authors: Xutao Sheng, Guangyue Lu, Liqin Shi, Yinghui Ye
• Format: Article
• Language: English
• Published: MDPI AG 2019-02-01
• Series: Information
• Subjects: simultaneous wireless information and power transfer; relay network; outage performance; hybrid protocol; asymmetric fading
• Online Access: https://www.mdpi.com/2078-2489/10/2/50

Simultaneous wireless information and power transfer is a practicable solution to encourage energy-constrained relay nodes to cooperate with the source to transmit information to the destination. In this paper, we study the outage performance of hybrid protocol based amplify-and-forward (AF) relay networks over asymmetric fading channels, where the source-relay link and the relay-destination link are subjected to Rician fading and Rayleigh fading, respectively. In particular, we derive the lower bound of outage probability and the upper bound of outage capacity based on a high signal-to-noise ratio approximation, respectively. We further investigate the effects of various system parameters, such as the parameters of hybrid protocol, the target rate, and the Rician <i>K</i>-factor, on the investigated network. It is shown that a good selection of parameters of hybrid protocol is of significance to improve system capacity, and that a larger Rician factor is desirable in the investigated network.