| 摘要 |
A base station and a plurality of mobile stations are coupled by down and up radio communication lines. In base station, a spread spectrum signal is generated on the basis of a base station timing signal generated therein. In the mobile station, the spread spectrum signal transmitted from the base station is despread in spectrum by a mobile station timing signal. The mobile station timing signal is changed in generating timing to be determined by monitoring a despread spectrum signal as to whether an encoded data is observed or not therein.
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