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Bayesian methods for erasure insertion in frequency-hop communication systems with partial-band interference

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2 Author(s)
Baum, C.W. ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA ; Pursley, M.B.

The erasure of unreliable symbols improves the performance of most types of error-control coding if a good method is used to decide which symbols should be erased. Bayesian decision theory is employed to obtain such a method for use in frequency-hop communications with Reed-Solomon coding and errors-and-erasures decoding. The performance of frequency-hop communications with Bayesian erasure insertion is analyzed for channels with both partial-band and wideband Gaussian noise. The Bayesian technique is compared with Viterbi's ratio-threshold test, and these are compared to receivers that do not erase and use errors-only decoding. Comparisons are also made with receivers that erase all the symbols that are affected by the partial-band interference. When interference is strong, large coding gains result from the Bayesian method, and error probabilities are reduced by several orders of magnitude

Published in:

Communications, IEEE Transactions on  (Volume:40 ,  Issue: 7 )

Date of Publication:

Jul 1992

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