Standard (H.324M) Compatible Video Decoding for Mobile Multimedia Systems over Error-Prone Channel

摘要

Motivated by error-robust mobile multiplexer what was called H.223/Annex A1 (herein after simply H.223/A), we investigate restriction of H.263 functionality in H.324 mobile terminals (herein after H.324M) against error-prone channel. Although H.223/A employs strong error protection schemes such as rate compatible punctured convolutional code (RCPC) and automatic retransmission on request (ARQ), it cannot detect errors in encoded video (H.263) bit stream In order to further increase the performance of the total H.324/M system, it is desirable to reduce functionality of H.263 so that H.263 decoder can easily locate errors in incoming H.263 stream, which cannot be made possible by H.223/A. We suggest one of possible ways to achieve H.263-compatible and reduced functionality incorporated with a new mobile multiplexer (H.223/A) in wireless links aiming at enhancement of visual quality at receiver.