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Minimum distance and convergence analysis of hamming-accumulate-accumulate codes

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2 Author(s)
Alexandre Graell i Amat I Amat ; Department of Electronics, Institut TELECOMTELECOM Bretagne, CS 83818 - 29238 Brest Cedex 3, France ; Raphael Le Bidan

In this letter we consider the ensemble of codes formed by the serial concatenation of a Hamming code and two accumulate codes. We show that this ensemble is asymptotically good, in the sense that most codes in the ensemble have minimum distance growing linearly with the block length. Thus, the resulting codes achieve high minimum distances with high probability, about half or more of the minimum distance of a typical random linear code of the same rate and length in our examples. The proposed codes also show reasonably good iterative convergence thresholds, which makes them attractive for applications requiring high code rates and low error rates, such as optical communications and magnetic recording.

Published in:

IEEE Transactions on Communications  (Volume:57 ,  Issue: 12 )