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On Routing for Multiple Description Video Over Wireless Ad Hoc Networks

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6 Author(s)
S. Mao ; Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ. ; Y. T. Hou ; X. Cheng ; H. D. Sherali
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We study the problem of multipath routing for double description (DD) video in wireless ad hoc networks. We follow an application-centric cross-layer approach and formulate an optimal routing problem that minimizes the application layer video distortion. We show that the optimization problem has a highly complex objective function and an exact analytic solution is not obtainable. However, we find that a meta-heuristic approach such as genetic algorithms (GAs) is eminently effective in addressing this type of complex cross-layer optimization problems. We provide a detailed solution procedure for the GA-based approach. Simulation results demonstrate the superior performance of the GA-based approach versus several other approaches. Our efforts in this work provide an important methodology for addressing complex cross-layer optimization problems, particularly those involved in the application and network layers

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IEEE Transactions on Multimedia  (Volume:8 ,  Issue: 5 )