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Comment on "Comparison of two convolutional orthogonal coding techniques for CDMA radio communication systems"

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1 Author(s)
Viterbi, A.J. ; Qualcomm Inc., San Diego, CA, USA

For original paper see ibid., vol.43, no.6, p.2028, 1995. This brief comment points out that the comparison is between a quasi-optimal metric for a word-by-word coding and interleaving technique and a sub-optimal metric for a bit-by-bit technique. When the sub-optimal receiver for the latter is replaced by an improved quasi-optimal metric, the difference in performance of the two techniques is much reduced for slow fading, while for fast fading, the bit-by-bit scheme is superior.

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Communications, IEEE Transactions on  (Volume:44 ,  Issue: 6 )