Method and arrangement of signal tracking and a rake-receiver ut

Details Method and arrangement of signal tracking and a rake-receiver ut Method and arrangement of signal tracking and a rake-receiver ut

1997-01-15

1999-11-02

Pham, Chi H.

Pulse or digital communications

Receivers

Interference or noise reduction

375267, 455132, H04B 710, H04B 702, H04B 1112

Patent

active

059784237

ABSTRACT:
The invention relates to a method for tracking closely adjacent and time-shifted signals incoming to a RAKE-receiver (25). According to the method, the sampling positions of the RAKE-branches (25a, 25b) are not permitted to come closer to one another in time than by a predetermined minimum value when updating the branches. The invention also relates to an arrangement (24) for putting the method into effect. The arrangement includes a search unit (24a), a plurality of tracking units (24c, 24d) and a processor unit (24b). The invention also relates to a RAKE-receiver utilizing said apparatus.

REFERENCES:
patent: 5577068 (1996-11-01), Bottomley et al.
patent: 5654980 (1997-08-01), Latva-aho et al.
patent: 5684793 (1997-11-01), Kiema et al.
patent: 5687197 (1997-11-01), Powell, II et al.
patent: 5727032 (1998-03-01), Jamal et al.

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