SLIDING CORRELATOR AND SLIDING CORRELATING METHOD

摘要

A sliding correlator in a spread spectrum receiving apparatus includes arithmetic device for calculating a correlation value between a data sequence and a correlation coefficient sequence, and decision device for deciding whether a succession of the same coefficients exists in the correlation coefficient sequence. The arithmetic device carries out a calculation in accordance with the result of decision made by the decision device. Further, a sliding correlation method in a receiver in a spread spectrum communication system decides whether a succession of the same coefficients exists in a correlation coefficient sequence, and calculates a correlation value between a data sequence and a correlation coefficient sequence in accordance with the result of the decision. The sliding correlator and the sliding correlation method permit obtaining correlation values similar to those obtained by the use of any conventional sliding correlator and is capable of reducing integrating power consumption by decreasing the number of calculations.