Performance of BCH codes with (1 + x)<sup>s</sup> error detection
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The performance is investigated of a combined error correction and detection decoder for BCH codes for which the generator polynomial g(x) has been augmented by a (1 + x)s term in order to make the informations bits an integral number of bytes. An ARQ retransmission scheme on an additive white Gaussian noise channel is assumed and a comparison with an FEC-only BCH code is given in terms of probability of error against Eb/N0. It is shown for a BCH (127, 106, 7) code that at high Eb/N0 the performance improvement is of three orders of magnitude at the cost of a small rate degradation. Goppa codes, whose length is an integral number of bytes, have also been investigated, producing similar results. © The Institution of Engineering and Technology 2014.
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