Abstract
The puncturing technique, which is widely used for binary convolutional codes, is applied to Trellis-Coded Modulation (TCM). Extensive computer searches have provided the best punctured TCM codes. The free Euclidean distance of most of these codes matches the distance of Ungerboeck's optimum codes. Since punctured codes are obtained from a low-rate code, decoding can be simplified at the expense of a small reduction in the coding gain. In addition to the decoding advantages, the rate of a punctured code can be easily changed and thus, variable bandwidth efficiency systems can be implemented with a single encoder/decoder.
This research has been supported in part by the Natural Sciences and Engineering Research Council of Canada, the Fonds pour la formation des Chercheurs et l'Aide à la Recherche (FCAR) du Québec and by a grant from the Canadian Institute for Telecommunications Research under the National Centers of Excellence program of the Government of Canada. This paper was presented in part at the IEEE International Symposium on Information Theory, San Antonio, Texas, Jan. 17–22, 1993
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© 1994 Springer-Verlag Berlin Heidelberg
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Chan, F., Haccoun, D. (1994). Variable-rate punctured Trellis-Coded Modulation and applications. In: Gulliver, T.A., Secord, N.P. (eds) Information Theory and Applications. ITA 1993. Lecture Notes in Computer Science, vol 793. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-57936-2_43
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DOI: https://doi.org/10.1007/3-540-57936-2_43
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