Two HARQ Protocols for Relay Cooperative Systems
Wenbo Wang · Beijing Youdian Xueyuan xuebao · 2008
Two hybrid automatic repeat request(HARQ) protocols for relay cooperative Rayleigh fa-ding systems are proposed,they are relay-controlled and destination-controlled protocols,the control on each side is based on the outage probability. Numerical analysis and simulation under the slow fading channel show that the lower average received signal noise ratio(SNR) of the relay,and good performance gain will be got in relay-controlled HARQ protocol.In the destination-controlled HARQ protocol,when the uplink qualities of the source and relay are worse,the average received SNR of the destination will become lower,the systems performance can be improved efficiently.