Coding scheme for wireless video transport with reduced frame skipping

Supavadee Aramvith; Ming-Ting Sun

doi:10.1117/12.386547

30 May 2000 Coding scheme for wireless video transport with reduced frame skipping

Supavadee Aramvith, Ming-Ting Sun

Proceedings Volume 4067, Visual Communications and Image Processing 2000; (2000) https://doi.org/10.1117/12.386547
Event: Visual Communications and Image Processing 2000, 2000, Perth, Australia

Abstract

We investigate the scenario of using the Automatic Repeat reQuest (ARQ) retransmission scheme for two-way low bit-rate video communications over wireless Rayleigh fading channels. We show that during the retransmission of error packets, due to the reduced channel throughput, the video encoder buffer may fill-up quickly and cause the TMN8 rate-control algorithm to significantly reduce the bits allocated to each video frame. This results in Peak Signal-to-Noise Ratio (PSNR) degradation and many skipper frames. To reduce the number of frames skipped, in this paper we propose a coding scheme which takes into consideration the effects of the video buffer fill-up, an a priori channel model, the channel feedback information, and hybrid ARQ/FEC. The simulation results indicate that our proposed scheme encode the video sequences with much fewer frame skipping and with higher PSNR compared to H.263 TMN8.

Citation Download Citation

Supavadee Aramvith and Ming-Ting Sun "Coding scheme for wireless video transport with reduced frame skipping", Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); https://doi.org/10.1117/12.386547

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