Optimized Video Multicasting Over Wireless Ad Hoc Networks Using Distributed Algorithm

Abstract. Video multicast over wireless ad hoc networks is a quite challenging task. In this paper, we propose an optimized video multicast scheme. Firstly, we apply prioritized coding scheme and network coding scheme to eliminate the decoding hierarchy and delivery redundancy. Then, we maximize the aggregate throughput at all the receivers by jointly optimizing both the source rate allocation and the routing scheme. The proposed algorithm is fully distributed, thus very suitable for wireless ad hoc networks. Simulation results show that the proposed video multicast scheme yields a superior video quality compared to the double-tree routing scheme