Title :
On saving decoder states for some trellis codes and partial response channels
Author :
Zehavi, Ephraim ; Wolf, Jack K.
Author_Institution :
QUALCOM Inc., San Diego, CA, USA
fDate :
2/1/1988 12:00:00 AM
Abstract :
It is shown that under certain conditions, when convolutional codes with precoding are used in conjunction with a partial response channel, the number of decoder states in a maximum-likelihood decoder matched to both the code and channel is 1/2 of that predicted by J.K. Wolf and G. Ungerboeck (ibid., vol.COM-34, no.7, p.751-72, 1986)
Keywords :
codes; decoding; encoding; convolutional codes; decoder states; maximum-likelihood decoder; partial response channels; precoding; trellis codes; Binary sequences; Convolutional codes; Galois fields; Hamming distance; Interference constraints; Interleaved codes; Intersymbol interference; Maximum likelihood decoding; Partial response channels; Transfer functions;
Journal_Title :
Communications, IEEE Transactions on
