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A Study on Reducing Transmission Delay in Mobile Video Communication Systems

Naoto MATOBA, Yasushi KONDO, Masaki YAMASHINA, Toshiaki TANAKA

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Summary :

Applying ARQ to real time video communication can significantly increase transmission delay due its retransmission operations. We analyze this delay and propose an adaptive error control scheme that uses acknowledgment from the receiver to reduce the delay. We evaluate this scheme using a computer simulation and show that the proposed scheme can reduce the delay by controlling the amount of video data by changing the quantization step size and video frame skipping. It also offers acceptable video quality as confirmed by a subjective evaluation test.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E80-A No.7 pp.1281-1287
Publication Date
1997/07/25
Publicized
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Type of Manuscript
Special Section PAPER (Special Section on Multi-dimensional Mobile Information Network)
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