Prioritized packet video transmission over time-varying wireless channel using proactive FEC

Wuttipong Kumwilaisak; JongWon Kim; C.-C. Jay Kuo

doi:10.1117/12.411539

28 December 2000 Prioritized packet video transmission over time-varying wireless channel using proactive FEC

Wuttipong Kumwilaisak, JongWon Kim, C.-C. Jay Kuo

Proceedings Volume 4115, Applications of Digital Image Processing XXIII; (2000) https://doi.org/10.1117/12.411539
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Quality of video transmitted over time-varying wireless channels relies heavily on the coordinated effort to cope with both channel and source variations dynamically. Given the priority of each source packet and the estimated channel condition, an adaptive protection scheme based on joint source-channel criteria is investigated via proactive forward error correction (FEC). With proactive FEC in Reed Solomon (RS)/Rate-compatible punctured convolutional (RCPC) codes, we study a practical algorithm to match the relative priority of source packets and instantaneous channel conditions. The channel condition is estimated to capture the long-term fading effect in terms of the averaged SNR over a preset window. Proactive protection is performed for each packet based on the joint source-channel criteria with special attention to the accuracy, time-scale match, and feedback delay of channel status estimation. The overall gain of the proposed protection mechanism is demonstrated in terms of the end-to-end wireless video performance.

Citation Download Citation

Wuttipong Kumwilaisak, JongWon Kim, and C.-C. Jay Kuo "Prioritized packet video transmission over time-varying wireless channel using proactive FEC", Proc. SPIE 4115, Applications of Digital Image Processing XXIII, (28 December 2000); https://doi.org/10.1117/12.411539

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