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On a technique to calculate the exact performance of a convolutional code

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7 Author(s)
M. R. Best ; Dept. of Electr. Eng., Twente Univ., Enschede, Netherlands ; M. V. Burnashev ; Y. Levy ; A. Rabinovich
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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.<>

Published in:

IEEE Transactions on Information Theory  (Volume:41 ,  Issue: 2 )