IEEE Transactions on Image Processing
Optimizing motion compensated prediction for error resilient video coding
IEEE Transactions on Image Processing
Optimal bandwidth allocation for scalable H.264 video transmission over MIMO systems
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
On Uplink Channel Estimation in WiMAX Systems
International Journal of Mobile Computing and Multimedia Communications
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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.