Partially overlapped channels not considered harmful
SIGMETRICS '06/Performance '06 Proceedings of the joint international conference on Measurement and modeling of computer systems
A case for adapting channel width in wireless networks
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
Interference alignment and cancellation
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
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We study the benefits of optimal spectrum allocation in a wireless network with frequency agile radios and we present a cross-layer problem formulation for the joint routing and link scheduling under non-uniform spectrum allocation. We present a primal-dual decomposition to provide an exact solution for this complex optimization problem. Given the difficulty associated with such design, we propose a heuristic approach based on simulated annealing to solve the dual subproblem of the decomposed model. Numerical results revealed that up to 44% improvement in network performance is obtained when variable-width spectrum band allocation is used, as opposed to the best fixed-width spectrum band allocation for larger networks. Numerical results also confirm that the primal-dual decomposition method using simulated annealing to solve the dual sub-problem, substantially reduces the computation time and achieves near optimal solutions.