On a technique to calculate the exact performance of aconvolutional code |
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Authors: | Best M.R. Burnashev M.V. Levy Y. Rabinovich A. Fishburn P.C. Calderbank A.R. Costello D.J. Jr. |
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Affiliation: | Dept. of Electr. Eng., Twente Univ., Enschede; |
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Abstract: | A Markovian technique is described to calculate the exact performance of the Viterbi algorithm used as either a channel decoder or a source encoder for a convolutional code. The probability of information bit error and the expected Hamming distortion are computed for codes of various rates and constraint lengths. The concept of tie-breaking rules is introduced and its influence on decoder performance is examined. Computer simulation is used to verify the accuracy of the results. Finally, we discuss the issue of when a coded system outperforms an uncoded system in light of the new results |
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