Patent ID: 6539009
Filing Date: 2003-03-25
Classification: H04B

Abstract:
A signal reception apparatus for direct sequence code division multiple access (DS-CDMA) cellular system comprising:a set of a plurality of sampling and holding circuits for holding an input signal successively input: a plurality of matched filters each for calculating a correlation every predetermined periods (symbol periods) between said input signal held by said sampling and holding circuits and a spreading code sequence, said spreading code sequence being a sequence of composite code of a long code indicating a base station and a short code indicating a mobile station; a plurality of calculation registers for supplying said spreading code sequences to said matched filters, said calculation registers being classified into a plurality of groups corresponding to said matched filters, each said group including one or more of said calculation registers; and a multi-plexer means provided for said groups including a plurality of calculation registers for selectively connecting one of said calculating registers in each said group to said corresponding matched filter.