Correlator for carrying out low current consumption

Application Number: 00103438
Application Date: 2000.03.10
Publication Number: 1267150
Publication Date: 2000.09.20
Priority Information: 1999/3/12 JP 065984/99
International: H04J7/00
Applicant(s) Name: NEC Corp.
Inventor(s) Name: Tsumura Soichi
Patent Agency Code: 11219
Patent Agent: mu dejun
Abstract A correlator can stop correlation computation on the basis of the value of a despreading code, and decreases the operation ratio of a section operated in accordance with a despreading code pattern to 1/2 that of a conventional scheme (when spreading is performed by BPSK). This correlator reduces the current consumption to about 1/2 that of the conventional scheme (when spreading is performed by BPSK) in a case of a sufficiently high spreading ratio by using a common total adder regardless of the despreading code pattern, thereby realizing lower current consumption than the conventional correlator without decreasing the operation speed.