Reliable video transmission over fading channels via channel state estimation

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

doi:10.1117/12.382966

19 April 2000 Reliable video transmission over fading channels via channel state estimation

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

Proceedings Volume 3974, Image and Video Communications and Processing 2000; (2000) https://doi.org/10.1117/12.382966
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

Transmission of continuous media such as video over time- varying wireless communication channels can benefit from the use of adaptation techniques in both source and channel coding. An adaptive feedback-based wireless video transmission scheme is investigated in this research with special emphasis on feedback-based adaptation. To be more specific, an interactive adaptive transmission scheme is developed by letting the receiver estimate the channel state information and send it back to the transmitter. By utilizing the feedback information, the transmitter is capable of adapting the level of protection by changing the flexible RCPC (rate-compatible punctured convolutional) code ratio depending on the instantaneous channel condition. The wireless channel is modeled as a fading channel, where the long-term and short- term fading effects are modeled as the log-normal fading and the Rayleigh flat fading, respectively. Then, its state (mainly the long term fading portion) is tracked and predicted by using an adaptive LMS (least mean squares) algorithm. By utilizing the delayed feedback on the channel condition, the adaptation performance of the proposed scheme is first evaluated in terms of the error probability and the throughput. It is then extended to incorporate variable size packets of ITU-T H.263+ video with the error resilience option. Finally, the end-to-end performance of wireless video transmission is compared against several non-adaptive protection schemes.

Citation Download Citation

Wuttipong Kumwilaisak, JongWon Kim, and C.-C. Jay Kuo "Reliable video transmission over fading channels via channel state estimation", Proc. SPIE 3974, Image and Video Communications and Processing 2000, (19 April 2000); https://doi.org/10.1117/12.382966

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