|
Таблица F4.A-1.5 Свертка 2-х векторов (r)X[t] и (r)H[t] длины T= 8 GF( 1 + 224 ) = GF( 1 + 216 ) = GF( F4 ) в (A-1)-арифметике, T–1 = 1/T = 0'224. 0 = 57345 Результаты в (A-1)-арифметике в виде 17-битовых слов = ПСНВ+ mod F4, т.е. в диапазоне [ 0..+65536] |
| 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. 1 = 2 | 0' 0. 17 = 18 | 0' 0. 0 = 1 | 0' 0. 2 = 3 | 0' 0. 53 = 54 | 0' 0. 15 = 16 | 0' 0. 1 = 2 |
| 1 | 0' 0. 14 = 15 | 0' 1.241 = 498 | 0' 0. 1 = 2 | 0' 0. 32 = 33 | 0' 64. 49 = 16434 | 0' 0.151 = 152 | 0' 0. 18 = 19 |
| 2 | 0' 0. 0 = 1 | 0' 15. 0 = 3841 | 1' 0. 0 = 0 | 0' 2. 0 = 513 | 0' 16.226 = 4323 | 0' 0.247 = 248 | 0' 0. 30 = 31 |
| 3 | 1' 0. 0 = 0 | 0'239. 1 = 61186 | 1' 0. 0 = 0 | 0' 32. 0 = 8193 | 0' 17. 32 = 4385 | 0' 0. 15 = 16 | 0' 0. 1 = 2 |
| 4 | 1' 0. 0 = 0 | 0'255.244 = 65525 | 1' 0. 0 = 0 | 0'255.255 = 2^16 | 0' 0. 11 = 12 | 1' 0. 0 = 0 | 1' 0. 0 = 0 |
| 5 | 1' 0. 0 = 0 | 0' 0. 17 = 18 | 1' 0. 0 = 0 | 0'255.225 = 65506 | 0'253.210 = 64979 | 1' 0. 0 = 0 | 1' 0. 0 = 0 |
| 6 | 1' 0. 0 = 0 | 0'241. 1 = 61698 | 1' 0. 0 = 0 | 0'254. 1 = 65026 | 0'238.227 = 61156 | 1' 0. 0 = 0 | 1' 0. 0 = 0 |
| 7 | 1' 0. 0 = 0 | 0' 15. 2 = 3843 | 1' 0. 0 = 0 | 0'224. 1 = 57346 | 0'176.227 = 45284 | 1' 0. 0 = 0 | 1' 0. 0 = 0 |