On Outage of WPC System With Relay Selection Over Nakagami- $m$ Fading Channels

摘要

This paper considers a dual-hop wireless powered cooperative system with multiple relays, which consists of a source (S), a destination (D) and multiple relay candidates. These relay candidates can harvest energy from the interference signals to transfer the decoded data to D. Two classic relay selection schemes, optimal source-relay link and optimal source-relaydestination link schemes, are considered to choose a best relay to aid the transmission between S and D under conditional decodeand-forward scheme. The closed-form expressions of the outage probability for the two considered relay selection schemes have been derived and verified over independent Nakagami-m fading channels.