Spectrum spread reception apparatus

摘要

A matched filter takes a correlation between a plurality of multiplexed spread spectrum signals and a spreading code. A cyclic integrator integrates a correlation waveform, associated integration outputs with phases, and sets up a maximum detection when an integration value corresponding to a predetermined phase is detected as a maximum. A correlation peak canceller regards an integration value of a phase having the maximum detection flag as a maximum of the correlation waveform of the spreading code, generates a replica signal, and eliminates the replica signal from an output of the integration. A maximum detection unit detects a maximum in a predetermined integration period and a phase corresponding to the maximum from the output of the integration after eliminating the replica signal.