Video broadcasting over MIMO-OFDM systems

In this paper, we address the problem of video broadcasting over the orthogonal frequency division multiplexing (OFDM) systems with multiple antennas in both transmitter and receiver. In broadcast scenario, we propose to utilize the scalable video source with multiple description transcoding to provide multiple replicas for transmission, and post-processing is proposed to acquire parallel spatial subchannels. Our proposed approach minimizes the maximal performance degradation for video broadcasting users with power-efficient assignment of source descriptions to spatial subchannels. The proposed system efficiently combines progressive source coding with MIMO channels to implement robust video broadcasting over MIMO-OFDM systems. Simulation results demonstrate the advantages of our proposed approach.