Abstract
In this paper, we present a cooperative multihop transmission scheme for two-way amplify-and-forward (AF) relay networks. Based on a symbol error probability (SEP) analysis and using geographic information, we derive the maximum one-hop distance for a networking node under a given SEP and develop a next-hopping-node selection scheme. With these results, we then propose a routing protocol based on a greedy algorithm to realize the transmission scheme, where a routing path consisting of a number of independent two-way AF relaying procedures is built to connect the two sources. As compared to a previous related work, the proposed approach removes the utilization limitation and improves the routing efficiency. Computer simulation results also show that it provides a higher probability of successfully building a routing path with close effective throughput for most cases of interest.
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