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Таблица F5.A-1.3 Свертка 2-х векторов (r)X[t] и (r)H[t] длины T= 8 GF( 1 + 225 ) = GF( 1 + 232 ) = GF( F5 ) в (A-1)-арифметике, T–1 = 1/T = 224. 0. 0. 1 Результаты в A-арифметике в 33-битовых числах = ПСНВ+ mod F5, т.е. в диапазоне [ 0..+232] |
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. 32 |
0. 0. 0. 64 |
0. 0. 0. 1 |
0. 0. 0. 3 |
0. 0. 0.192 |
0. 0. 1. 0 |
0. 0. 0. 32 |
1 |
0. 0. 0. 64 |
255.224. 64. 33 |
0. 0. 0. 2 |
0. 0. 2. 1 |
192. 96.128. 33 |
0. 0. 4. 0 |
0. 0. 0.128 |
2 |
255.255.255.225 |
0. 64. 0. 64 |
0. 0. 0. 0 |
0. 2. 0. 1 |
0.191.255.192 |
0. 0. 3. 0 |
0. 0. 0. 96 |
3 |
0. 0. 0. 0 |
64. 32. 0. 32 |
0. 0. 0. 0 |
2. 0. 0. 1 |
127.159.192. 32 |
255.255.254. 1 |
255.255.255.193 |
4 |
0. 0. 0. 0 |
255.255.255.193 |
0. 0. 0. 0 |
2^32 |
0. 0. 0. 64 |
0. 0. 0. 0 |
0. 0. 0. 0 |
5 |
0. 0. 0. 0 |
255.223.192. 33 |
0. 0. 0. 0 |
255.255.254. 2 |
64. 95.128. 32 |
0. 0. 0. 0 |
0. 0. 0. 0 |
6 |
0. 0. 0. 0 |
255.192. 0. 65 |
0. 0. 0. 0 |
255.254. 0. 2 |
255. 63.255.193 |
0. 0. 0. 0 |
0. 0. 0. 0 |
7 |
0. 0. 0. 0 |
192. 32. 0. 33 |
0. 0. 0. 0 |
254. 0. 0. 2 |
127.160. 64. 33 |
0. 0. 0. 0 |
0. 0. 0. 0 |