Variable-rate punctured Trellis-Coded Modulation and applications

Autor:	François Chan, David Haccoun
Rok vydání:	1994
Předmět:	Euclidean distance Puncturing Computer science Convolutional code Data_CODINGANDINFORMATIONTHEORY Spectral efficiency Trellis modulation Encoder Algorithm Coding gain Decoding methods Computer Science::Information Theory
Zdroj:	Information Theory and Applications ISBN: 9783540579366 Information Theory and Applications
DOI:	10.1007/3-540-57936-2_43
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b4831237bac54cd33489c4c7a7df3dc2 https://doi.org/10.1007/3-540-57936-2_43 Zobrazit plný text záznamu