Rake receiver for a CDMA system, in particular incorporated...

Details Rake receiver for a CDMA system, in particular incorporated... Rake receiver for a CDMA system, in particular incorporated...

2005-09-20

2005-09-20

Fan, Chieh M. (Department: 2634)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S148000, C370S342000

Reexamination Certificate

active

06947470

ABSTRACT:
A rake receiver uses a delayed version of the received sequence and a delayed version of a scrambling code. The flexible hardware structure of the time-aligning and descrambling unit includes at least two delay chains and one multiplier. By controlling two multiplexers, the delayed versions of the received sequence can be multiplied with an arbitrary scrambling code having an arbitrary phase. During one chip period, one multiplication is performed for each path to be processed.

REFERENCES:
patent: 5361276 (1994-11-01), Subramanian
patent: 5675616 (1997-10-01), Hulbert et al.
patent: 5764687 (1998-06-01), Easton
patent: 5764688 (1998-06-01), Hulbert et al.
patent: 5999562 (1999-12-01), Hennedy et al.
patent: 6779009 (2004-08-01), Zuber
patent: 2002/0176393 (2002-11-01), Maruyama
patent: 0851600 (1998-07-01), None

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