Distributed Routing Algorithms for Wireless Multihop Networks

We introduce distributed algorithms to find rate-optimal routes based on local knowledge of the pairwise error probability (reliability) matrix. The distributed algorithms are built by (re)-formulating optimization problems amenable to application of dual decomposition techniques. Convergence of our algorithms to the optimal routing matrix is guaranteed under mild conditions. Many rate-optimality criteria of practical interest can be casted in our framework including maximization of: i)worst user's rate; ii) weighted sum of rates; iii) product of rates; and iv) relay network rate. We test robustness of our algorithms to node mobility.