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А.3 Performances of binary convolution codes
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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
Дата публикования: 2014-11-02; Прочитано: 281 | Нарушение авторского права страницы | Мы поможем в написании вашей работы!
