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Video coding with fixed-length packetization for a tandem channel
Yushi Shen Dr., University of California, San Diego
P C. Cosman Prof., University of California, San Diego
L B. Milstein Prof., University of California, San Diego

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ABSTRACT:

A robust scheme is presented for the efficient transmission of packet video over a tandem wireless Internet channel. This channel is assumed to have bit errors (due to noise and fading on the wireless portion of the channel) and packet erasures (due to congestion on the wired portion). First, we propose an algorithm to optimally switch between intracoding and intercoding for a video coder that operates on a packet-switched network with fixed-length packets. Different re-synchronization schemes are considered and compared. This optimal mode selection algorithm is integrated with an efficient channel encoder, a cyclic redundancy check outer coder concatenated with an inner rate-compatible punctured convolutional coder. The system performance is both analyzed and simulated. Last, the framework is extended to operate on a time-varying wireless Internet channel with feedback information from the receiver. Both instantaneous feedback and delayed feedback are evaluated, and an improved method of refined distortion estimation for encoding is presented and simulated for the case of delayed feedback.

SUGGESTED CITATION:
Yushi Shen Dr., P C. Cosman Prof., and L B. Milstein Prof., "Video coding with fixed-length packetization for a tandem channel" (2006). IEEE Transactions on Image Processing. 15 (2), pp. 273-288. Postprint available free at: http://repositories.cdlib.org/postprints/2438

REQUIRED PUBLISHER STATEMENT:
©2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

 
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