Abstract:

Based on different multi-hop cooperative network configurations, five single-relaying cooperative transmitted protocols were investigated. Their non-regenerative performances were analyzed and compared from a capacity and a diversity point-of-view over Rayleigh fading environments. And some impacts of the mobility of the relaying nodes on the performances were considered. The simulated results and theoretic analysis show that the cooperative systems can offer the two-order full diversity at some given manners, e.g. virtual multiple input single output(VMISO) system achieves two-order diversity if the relaying node is close to the source node. However, it will degrade to one-order diversity if the relaying node is close to the destination node. Since these cooperative systems need two times time-slot resources corresponding to the single-hop systems, the capacity of the former is smaller than that of the latter.

Key words: multi-hop networks, cooperative protocol, non-regenerative relaying, diversity order