Patent ID: 6954485

Claim:
A CDMA baseband receiving apparatus comprising: a maximum correlation peak phase detecting section configured to detect as long code phase candidates, correlation peak phases having a plurality of larger ones of correlation values obtained by carrying out correlation calculation between a spread modulation signal and a short code over a plurality of long code periods; a long code generating section configured to generate long codes corresponding to said long code phase candidates; a threshold value determining section configured to detect a long code having a maximum one of correlation values obtained through correlation calculation between a spread code which is generated from said short code and said long code generated by said long code generating section, and said spread modulation signal, said long code having said correlation value more than a threshold value, and to determine said long code as a long code peculiar to a base station; a known base station delay profile generating section configured to generate delay profiles for a plurality of base stations, from which signals are on reception, based on a spread code generated from said short code and said long code determined by said threshold value determining section; and a main path detecting section configured to detect said correlation peak phases with said plurality of larger correlation values which are stored in said known base station delay profile generating section to supply to demodulation correlation section; a section configured to delete said long code phase candidates having same phases as said plurality of larger ones of said correlation peak phases said correlation peak phase in the delay profile for said plurality of base stations on said reception from said long code phase candidates and detecting long code phase candidates.