| 摘要 |
PROBLEM TO BE SOLVED: To provide the code division multiplex communication equipment capable of high speed synchronization, with a simple configuration and small power consumption in the standby state. SOLUTION: When a specific pattern included in a reception signal by a reception antenna 10 is detected by a SAW matched filter 12, the filter 12 provides an output of a correlation peak. A tip synchronizing signal generator 13 detects the correlation peak and generates a synchronizing signal at a point of time elapsed from the detection point of time by a prescribed time. An orthogonal PN signal generator 20 generates a predetermined orthogonal PN code synchronously with the synchronizing signal. Furthermore, a carrier generator 23 generates a carrier based on an output from the SAW matched filter 12. The generated carrier is modulated by an output of the orthogonal PN signal generator 20. Then the signal received by the reception antenna is multiplied with a modulation output by a multiplier 28 and integrated by an integration device 29, from which a signal restored to the original signal is outputted. |
