DocumentCode :
779285
Title :
Trellis Coding for Partial-Response Channels
Author :
Wolf, Jack K. ; Ungerboeck, Gottfried
Author_Institution :
Univ. of California at San Diego, La Jolla, CA
Volume :
34
Issue :
8
fYear :
1986
fDate :
8/1/1986 12:00:00 AM
Firstpage :
765
Lastpage :
773
Abstract :
We consider trellis-coding techniques for improving the reliability of digital transmission over noisy partial-response channels. Such channels are commonly encountered in digital communication systems, and also play a role in devices for data recording. Concentrating on the channels with characteristics (1 \\mp D) , we study methods to obtain codes which increase free Euclidean distance between permitted sequences of channel outputs and avoid the occurrence of unlimited runs of identical outputs at the expense of some loss in data rate. One technique employs the concept of set partitioning. The other is based on using convolutional codes designed for maximum free Hamming distance in conjunction with a precoder. Both methods lead to essentially equivalent codes.
Keywords :
Partial-response signaling; Trellis coding; Application software; Convolutional codes; Decoding; Digital communication; Digital recording; Euclidean distance; Gain control; Hamming distance; Timing; Transfer functions;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1986.1096620
Filename :
1096620
Link To Document :
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