| 摘要 |
PURPOSE:To improve the S/N of a PSK reception burst signal and to reduce the bit error. CONSTITUTION:The reception burst synchronizing circuit demodulating a PSK burst signal is provided with a matched filter 1 applying waveform equalization to a reception PSK burst signal subject to distortion on a transmission line, a comparator 2 binary-converting an output subject to waveform equalization with the matched filter 1, a synchronizing signal detection section 3 extracting an NRZ synchronizing signal by one bit from a unique word included in a preamble word of a PSK burst signal outputted from the comparator 2 and a sampling clock extract section 4 measuring a width of a bit pulse of the NRZ synchronizing signal by one bit extracted by the synchronizing signal detection section 3 and generating a sampling clock Sck to sample each bit of an ID code and data in a PSK burst signal in succession to the unique word corresponding to an intermediate point of the bit pulse of the NRZ synchronizing signal. |
