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In tables (А.3…А.6) performances of binary convolution codes with maximum free Hamming distance and rates (1/8…1/2) are given. Generator polynomials are given in the octal form. Labels: ν – code constrained length; d f – free Hamming distance; df m – upper bound of free distance; wd f – quantity of erroneous ways with weight d f; A-gain– asymptotic coding gain (dB) by using code in channels with BPSK.
table А.3 – Code rate R code = 1/8
Code number | ν | generator polynomials | d f m | d f | wd f | A-gain, dB |
25,27,33,35, 37,25,33,37 | 6,02 | |||||
45,55,57,65, 67,73,77,47 | 6,53 | |||||
115,127,131,135, 157,173,175,123 | 6,99 |
tableА.4 – Code rate R code = 1/4
Code number | ν | generator polynomials | d f m | d f | wd f | A-gain,dB |
5,7,7,7 | 3,98 | |||||
13,15,15,17 | 5,12 | |||||
25,27,33,37 | 6,02 | |||||
51,55,73,77 | 6,53 | |||||
53,67,71,75 | 6,53 | |||||
135,135,147,163 | 6,99 | |||||
235,275,313,357 | 7,40 | |||||
463,535,733,745 | 8,29 |
table А.5 – Code rate R code=1/3
Code number | ν | generator polynomials | d fm | d f | wd f | A-gain,dB |
5,7,7 | 4,26 | |||||
5,6,7 | 3,68 | |||||
13,15,17 | 5,23 | |||||
11,15,17 | 4,77 | |||||
10,15,17 | 4,26 | |||||
25,33,37 | 6,02 | |||||
47,53,75 | 6,37 | |||||
47,55,75 | 6,37 | |||||
45,55,75 | 6,42 | |||||
133,145,175 | 6,99 | |||||
127,155,165 | 6,37 | |||||
255,331,367 | 7,27 | |||||
557,663,711 | 7,78 |
table А.6 – Code rate R code = 1/2
Code number | n | generator polynomials | d f m | d f | wd f | A-gain, dB |
5,7 | 3,98 | |||||
15,17 | 4,77 | |||||
13,15 | 4,77 | |||||
23,35 | 5,44 | |||||
31,33 | 5,44 | |||||
25,37 | 4,77 | |||||
53,75 | 6,02 | |||||
61,73 | 6,02 | |||||
43,75 | 6,02 | |||||
45,73 | 6,02 | |||||
71,73 | 6,02 | |||||
133,171 | 6,99 | |||||
135,163 | 6,99 | |||||
247,371 | 6,99 |
Дата публикования: 2014-11-02; Прочитано: 294 | Нарушение авторского права страницы | Мы поможем в написании вашей работы!