Patent ID: 6067293
Filing Date: 2000-05-23
Classification: H04B

Abstract:
A receiver for use in a CDMA system comprising:spreading code generator means for generating a replica of a spreading code used on the side of a transmitter;searcher means for obtaining a spreading code timing of a receiving signal by calculating a mutual correlation between the replica produced by said spreading code generator means and the receiving signal;inverse spread means for inverse-spreading the receiving signal with the spreading code timing obtained by said searcher means by using the replica generated by said spreading code generator means;means for obtaining a self correlation of the replica generated by said spreading code generator means; andprocessing means for processing the self-correlation value as an invalid correlation value when the mutual correlation calculated by said searcher means is within a predetermined range with respect to an upper and lower threshold values obtained by incorporating in the thus obtained self-correlation value an error range corresponding to a receiving signal quality.