DEVICE AND METHOD FOR SYNCHRONIZING SCDMA UP STREAM OR UP STREAM OF OTHER TYPE WITH MCNS DOWN STREAM HAVING CLOCK RATE DIFFERENT FROM UP STREAM OR DOWN STREAM OF OTHER TYPE

摘要

PROBLEM TO BE SOLVED: To generate a clock of an up stream having a coherent phase by generating a master clock of a central unit(CU) and also generating a carrier and a chip clock of an up stream having the phases synchronized with each other at a remote unit(RU). SOLUTION: Another synthesizer 62 of a CU uses a master clock signal existing on a line 14 to generate a synchronized local carrier existing on a line 64 that is synchronized with the carrier of an up stream used by every RU. A clock of a down stream of the CU is generated to have a phase coherent with the master clock of the CU, and the RU restores a clock of a down stream to have a phase that is coherent with the master clock of the CU and uses this restored clock to generate a carrier and a clock of the up stream. The phase and amplitude errors are corrected via a combination of a slicer and a rotary amplifier.