DocumentCode
2253331
Title
Weight distributions of turbo-codes
Author
Svirid, Yuri V.
Author_Institution
Tech. Univ. of Munich, Germany
fYear
1995
fDate
17-22 Sep 1995
Firstpage
38
Abstract
An optimal interleaving between two component encoders of a turbo-code is proposed. For any real constructable interleaver the optimality criterion is given. For component codes (CC) with known weight distribution (WD) the WD of the turbo-code with perfect interleaving is calculated. As CC´s the random codes and terminated convolutional codes are considered. It is shown that the often observed “break” in the performance curves for turbo-codes is a result of their “broken” WD
Keywords
concatenated codes; convolutional codes; interleaved codes; component codes; component encoders; optimal interleaving; optimality criterion; performance curves; random codes; terminated convolutional codes; turbo-codes; weight distributions; Block codes; Convolution; Convolutional codes; Equations; Hamming weight; Informatics; Interleaved codes; Linearity; Random variables; Turbo codes;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location
Whistler, BC
Print_ISBN
0-7803-2453-6
Type
conf
DOI
10.1109/ISIT.1995.531140
Filename
531140
Link To Document