Video Transmission on Slowly Fading Channels Using Diversity

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Executive Summary

In slowly fading channels, video frame transmission time is usually longer than channel coherence time, so that fading channel can be represented as a set of parallel channels providing transmission diversity. Using simulation, the authors evaluate bounds on the quality of the received video, obtained by utilizing the available channel diversity, with no additional delay incurred. They assume that transmission errors occur only when the channel is in outage, outage being defined in terms of outage capacity. Simulations show that utilizing the available channel diversity improves performance in cases when sufficient bandwidth and SNR are available. Performance gains of up to 1.83 dB are identified in the received video PSNR for diversity order 6 at symbol rate of 105000 symbols/sec.

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