TY - JOUR
AU - Yao, Lei
AB - In this paper, we propose a joint source-channel coding scheme for progressive image transmission over binary symmetric channels(BSCs). The algorithm of set partitioning in hierarchical trees (SPIHT) is used for source coding. Rate-compatible punctured Turbo codes (RCPT) concatenated with multiple cyclic redundancy check (CRC) codes are adopted for channel protection. For a fixed transmission rate, the source and channel code rates are jointly optimized to maximize the expected image quality at the receiver. Two technical components which are different from existing methods are presented. First, a long data packet is divided into multiple CRC blocks before being coded by turbo codes. This is to secure a high coding gain of Turbo codes which is proportional to the interleaver size. In the mean time, the beginning blocks in a packet may still be useable although the decoding of the entire packet fails. Second, instead of using exhaustive search, we give a genetic algorithm (GA) based optimization method to find the appropriate channel code rates with low complexity. The effectiveness of the scheme is demonstrated through simulations.
TI - Turbo codes based image transmission for channels with random errors
JF - Proceedings of SPIE
DO - 10.1117/12.686358
DA - 2006-10-01
UR - https://www.deepdyve.com/lp/spie/turbo-codes-based-image-transmission-for-channels-with-random-errors-0KswfVI00i
SP - 63910M
EP - 63910M-8
VL - 6391
IS - 1
DP - DeepDyve
ER -