Patent ID: 7280587

Claim:
A spread spectrum receiver that performs a synchronized detection based on a correlation waveform between a received signal and a reference spreading code, wherein the received signal includes a plurality of multiplexed spread spectrum signals, the spread spectrum receiver comprising: a cyclic integration unit that cyclically integrates the correlation waveform, manages cyclic integration values and corresponding phases, and sets a maximum detection flag to an ON state when an integration value corresponding to a predetermined phase is detected as a maximum; a replica signal elimination unit that takes the integration value having an ON-state maximum detection flag as a maximum of the correlation waveform of the spreading code, generates a replica signal from the integration value, and eliminates the replica signal from the cyclic integration values; and a maximum detection unit that detects a new maximum integration value and a new phase corresponding to the new maximum integration value in a predetermined cyclic integration period from the cyclic integration values after eliminating the replica signal, wherein the new maximum integration value corresponds to a synchronization position.