关键词: 中继协同, 中继控制, 目的端控制, 混合重传技术协议, 误码率

Abstract:

Two Hybrid Automatic Repeat Request（HARQ） protocols for relay cooperative Rayleigh fading 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.

Key words: relaying cooperation, relay-controlled, destination-controlled, Hybrid automatic repeat request protocol, bit error rate