A reconfigurable FEC system based on Reed-Solomon codec for DVB and 802.16 network
WSEAS Transactions on Circuits and Systems
Efficient error control for scalable media transmission over 3g broadcast networks
EUC'06 Proceedings of the 2006 international conference on Embedded and Ubiquitous Computing
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We analyze the execution time of MAC-layer Reed-Solomonerror recovery in cdma2000 1xEV-DO broadcast and multicast services (BCMCS), with respect to cache size and air channel condition. We observe that a deteriorating channel condition often causes an intolerable delay for real-time tasks because of the error recovery process, even when sufficient cache memory is available to increase CPU throughput. To overcome this problem, we propose proactive Reed-Solomon bypass (PRSB), which determines whether the Reed-Solomon scheme should be used to correct errors in the real-time communication environment. The proposed scheme utilizes the cache effectively, thus preventing reset of the entire decoding process and allowing real-time multimedia applications to meet their deadline constraints. Simulation results show that the PRSB greatly improves the overall playback quality of a video.