| 摘要 |
For spectrum spreading with a small spreading factor N which may be four, an input bit sequence of an input bit rate fs is eventually converted into a serial data sequence of serial data of which each serial datum consists of N repetitions of N consecutive bits of the input bit sequence. By a shift register (19) operable at fs and a memory (23) operable at fs/4, the input bit sequence is first converted into N parallel bit sequences, which are converted into the serial data sequence by a selector (27) operable at Nfs. <IMAGE> |
