Patent ID: 6263010
Filing Date: 2001-07-17
Classification: H04B

Abstract:
A spread spectrum communication apparatus for transmitting/receiving digital signals to/from a base station in a spread spectrum form by using a spreading code having a periodicity and having a different offset value for each radio area comprising:spreading code generation means for generating a plurality of short codes by shifting a phase of the spreading code, during a synchronization acquisition interval for a pilot signal transmitted by said base station;signal search means for conducting synchronization acquisition of said pilot signal on the basis of a correlation between a short code of the pilot signal and each of the generated short codes and for recognizing a timing information of the spreading code when the short code of the pilot signal and the generated short code are synchronized; andphase holding means for holding the recognized timing information during power off interval and controlling a phase of generation start of the spreading code conducted by said spreading code generation means on the basis of said held information when power is turned on again.