DocumentCode
1339791
Title
Investigation into decoding algorithm for turbo codes
Author
Raphaeli, D. ; Gurevitz, A.
Author_Institution
Dept. of Electr. Eng., Tel Aviv Univ., Israel
Volume
36
Issue
9
fYear
2000
fDate
4/27/2000 12:00:00 AM
Firstpage
809
Lastpage
810
Abstract
An investigation into the turbo decoder is presented. It was carried out to determine whether the decoded bit sequence constitutes a (at least) local maximum in the likelihood between possible codewords in the composite code trellis. The answer was obtained experimentally using a modified iterative turbo decoder. Results show that the turbo decoder does not necessarily lead to a maximum likelihood sequence estimator being realised for the composite code. Moreover, finding a closer code in a Euclidean distance sense only degrades the bit error rate of the system
Keywords
decoding; error statistics; maximum likelihood sequence estimation; probability; turbo codes; BER; Euclidean distance; bit error rate; composite code trellis; decoded bit sequence; decoding algorithm; local maximum; maximum likelihood sequence estimator; modified iterative turbo decoder; turbo codes;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20000613
Filename
843786
Link To Document