Receiving route searching method and searching device circuit of CDMA receiving equipment


Application Number: 00103091
Application Date: 2000.02.24
Publication Number: 1264970
Publication Date: 2000.08.30
Priority Information: 1999/2/24 JP 046732/1999
International: H04J13/04
Applicant(s) Name: NEC Corp.
Address:
Inventor(s) Name: Sawaga Toshiko
Patent Agency Code: 11021
Patent Agent: lu ji
Abstract A reception path search method and a searcher circuit for use in a CDMA reception device is provided. The delay profile reflects change of the state of a reception path more appropriately. A phase angle of the fading vector which is subjected to the weighted-averaging is compared with a phase angle of the fading vector which is subjected to the weighted-averaging calculated previously. An absolute value of difference of both phase angles is within a fixed threshold value. On this occasion, an the in-phase-addition of the delay profile of the above vector value continues. The delay profile which is subjected to the in-phase-addition is maintained. While when the absolute value of the angle difference becomes more than the threshold value, the in-phase added delay profile is subjected to a power-addition to generate a delay profile.