| 摘要 |
PURPOSE:To shorten a synchronization establishing time by increasing output level of only first several synchronizing bits in the M sequence of a transmission signal at the time of transmission to transmit the signal. CONSTITUTION:At the time of transmission, a transmission output control circuit 1 increases the output level of only the first several synchronizing bits in the M-sequence code included in a transmission signal to transmit the signal. A receiving side detects the level-up part and initializes an M-sequence generator 4, a correlator 5 and a synchronization control circuit 6, so that the M-sequence code formed by a receiver and a receiving signal can be set up to a phase extremely close to a synchronizing phase. Thereby, the synchronization establishing time can be extremely shortened. |
