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A cascaded coding scheme for error control and its performance analysis

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4 Author(s)
T. Kasami ; Dept. of Inf. & Comput. Sci., Osaka Univ., Japan ; T. Fujiwara ; T. Takata ; S. Lin

A coding scheme for error control in data communication systems is investigated. The scheme is obtained by cascading two error-correcting codes, called the inner and outer codes. Its error performance is analyzed for a binary symmetric channel with a bit-error rate ε<1/2. It is shown that, if the inner and outer codes are chosen properly, high reliability can be attained even for a high-channel bit-error rate. Specific examples with inner codes ranging from high rates to low rates and Reed-Solomon codes as outer codes are considered, and their error probabilities evaluated. They all provide high reliability even for high bit-error rates, say 10-1-10 -2. Several example schemes are being considered for such satellite and spacecraft downlink error control

Published in:

IEEE Transactions on Information Theory  (Volume:34 ,  Issue: 3 )