CARRIER FREQUENCY SYNCHRONIZATION DETECTION CIRCUIT AND CORRELATION CALCULATOR

A correlation calculator and carrier frequency synchronization detection circuit are provided that enable a code phase, carrier frequency, and carrier frequency phase match to be detected even if a carrier frequency is greatly displaced. A correlation value calculation section (130) has n storage elements (501 through 507) that store a spread code, n-integral-multiple first delay elements (401 through 414) that perform sequential shifting by delaying an I component baseband signal by a fixed time interval, and n-integral-multiple first multipliers (701 through 714) that respectively perform multiplication between sequentially shifted I component baseband signals and the storage elements (501 through 507). The same kind of configuration as in the case of an above I component baseband signal is also provided for a Q component baseband signal.