|
Таблица F5.A-1.4 Свертка 2-х векторов (r)X[t] и (r)H[t] длины T= 4 GF( 1 + 225 ) = GF( 1 + 232 ) = GF( F5 ) в (A-1)-арифметике, T–1 = 1/T = - 64. 0. 0. 1 Результаты в A-арифметике в 33-битовых числах = ПСАНВ± mod F5, т.е. в диапазоне [–231..+231] |
t |
(r)X[t] – вх.Сигнал |
(r)X[f]=ЧПФ((r)X[t]) |
(r)H[t] – вх.Сигнал |
(r)H[f]=ЧПФ((r)H[t]) |
(r)E[f]=(r)X[f]·(r)H[f] |
(r)E[t]=оЧПФ((r)E[f]) |
(r)G[t]=(r)E[t]/T mod F2 |
0 |
+ 0. 0. 0. 2 |
+ 0. 0. 0. 18 |
+ 0. 0. 0. 1 |
+ 0. 0. 0. 3 |
+ 0. 0. 0. 54 |
+ 0. 0. 0. 8 |
+ 0. 0. 0. 2 |
1 |
+ 0. 0. 0. 15 |
+ 0. 15. 0. 1 |
+ 0. 0. 0. 2 |
+ 0. 2. 0. 1 |
+ 0. 16.255.227 |
+ 0. 0. 0. 76 |
+ 0. 0. 0. 19 |
2 |
+ 0. 0. 0. 1 |
- 0. 0. 0. 13 |
0. 0. 0. 0 |
- 0. 0. 0. 2 |
+ 0. 0. 0. 12 |
+ 0. 0. 0.124 |
+ 0. 0. 0. 31 |
3 |
0. 0. 0. 0 |
- 0. 15. 0. 0 |
0. 0. 0. 0 |
- 0. 2. 0. 0 |
- 0. 17. 0. 30 |
+ 0. 0. 0. 8 |
+ 0. 0. 0. 2 |