Enhanced decoding for the Galileo low-gain antenna mission

@inproceedings{citeulike:2674665, abstract = {Due to a malfunctioning high-gain antenna, the Galileo spacecraft is transmitting all its data through a low-gain antenna, and the data rate will seldom exceed 100 bits per second during its two-year tour of Jupiter's satellites. To offset some of the performance loss, the spacecraft's computer will be extensively reprogrammed to include new data compression and coding algorithms. The baseline coding system for the low gain antenna mission uses a Reed-Solomon (RS) outercode of block length 255 concatenated with a (14, 1/4) convolutional inner code, and interleaves the RS symbols to depth eight. The convolutionally encoded symbols are decoded by a maximum likelihood (Viterbi) decoder, and each RS codeword is decoded algebraically. Two types of decoding enhancements were proposed as feasible due to the low data rate. The first type of redecoding is confined to the RS decoder and utilizes information from neighboring codewords within the same interleaved block to erase unreliable symbols in undecoded words. The second type involves redecoding by the Viterbi decoder, using information fed back from codewords successfully decoded by the RS decoder}, author = {Dolinar, S. and Belongie, M. }, booktitle = {Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on}, citeulike-article-id = {2674665}, doi = {10.1109/ISIT.1994.394674}, journal = {Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on}, keywords = {antenna, gain, galileo, low, small}, pages = {344+}, posted-at = {2008-04-15 19:05:26}, priority = {2}, title = {Enhanced decoding for the Galileo low-gain antenna mission}, url = {http://dx.doi.org/10.1109/ISIT.1994.394674}, year = {1994} }

TY - CONF ID - citeulike:2674665 L3 - citeulike-article-id:2674665 TI - Enhanced decoding for the Galileo low-gain antenna mission T2 - Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on JF - Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on SP - 344 N2 - Due to a malfunctioning high-gain antenna, the Galileo spacecraft is transmitting all its data through a low-gain antenna, and the data rate will seldom exceed 100 bits per second during its two-year tour of Jupiter's satellites. To offset some of the performance loss, the spacecraft's computer will be extensively reprogrammed to include new data compression and coding algorithms. The baseline coding system for the low gain antenna mission uses a Reed-Solomon (RS) outercode of block length 255 concatenated with a (14, 1/4) convolutional inner code, and interleaves the RS symbols to depth eight. The convolutionally encoded symbols are decoded by a maximum likelihood (Viterbi) decoder, and each RS codeword is decoded algebraically. Two types of decoding enhancements were proposed as feasible due to the low data rate. The first type of redecoding is confined to the RS decoder and utilizes information from neighboring codewords within the same interleaved block to erase unreliable symbols in undecoded words. The second type involves redecoding by the Viterbi decoder, using information fed back from codewords successfully decoded by the RS decoder KW - antenna KW - gain KW - galileo KW - low KW - small AU - Dolinar, S AU - Belongie, M PY - 1994/// UR - http://dx.doi.org/10.1109/ISIT.1994.394674 ER -