Cross-layer routing optimization for wireless networks with cooperative diversity

Abstract

In this paper, we study the impact of cooperative transmission on the routing decision for wireless ad-hoc networks. The influence of cooperative transmission to the wireless link cost is first studied at the physical layer. Then the problem of routing optimization is investigated to understand the effects of improved link cost on the routing decision, where the closed-form solution of the optimization problem is developed and later used as a quantitative criterion of the route selection. Our developed analytical and simulation results show that the criteria using cooperative transmission typically yield more efficient routes compared with the non-cooperative schemes.