A new technique is proposed for constructing trellis codes. which provides an alternative to Ungerboeck's method of "set partitioning." The new codes use a signal constellation consisting of points from ann-dimensional latticeLambda, with an equal number of points from each coset of a sublatticeLambda '. One part of the input stream drives a generalized convolutional code whose outputs are cosets ofLambda ', while the other part selects points from these cosets. Several of the new codes are better than those previously known.
Published in:
Information Theory, IEEE Transactions on
(Volume:33
,
Issue:
2
)
Date of Publication:
Mar 1987
- Page(s):
-
177
-
195
- ISSN :
-
0018-9448
- Digital Object Identifier :
-
10.1109/TIT.1987.1057291
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
06 January 2003
- Issue Date :
-
Mar 1987
- Sponsored by :
-
IEEE Information Theory Society