CDM receiver apparatus and rake synthesizer apparatus

Details CDM receiver apparatus and rake synthesizer apparatus CDM receiver apparatus and rake synthesizer apparatus

2007-10-23

2007-10-23

Patel, Jay K. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S316000, C375S349000, C370S441000

Reexamination Certificate

active

10390775

ABSTRACT:
The SIR values of multi-paths obtained by a transmission path estimator are accumulated by an integrator at very cycle of a pilot signal, an average value for sufficiently long period is calculated by an average value calculator, a reference value is divided by a divider and applied as a control coefficient to multipliers, where it is multiplied by the SIR values, and the weight values of multi-paths are obtained. As for the despreaded data from a despreading unit, the timing of all data is synchronized in buffers, the data is complex multiplied by the above-mentioned weight values in multipliers, and RAKE is synthesized by adding in an adder, and outputted as final demodulated data to a soft decision unit.

REFERENCES:
patent: 5671221 (1997-09-01), Yang
patent: 5754599 (1998-05-01), Ling et al.
patent: 6229840 (2001-05-01), Ichihara
patent: 6442193 (2002-08-01), Hirsch
patent: 6496534 (2002-12-01), Shimizu et al.
patent: 6922434 (2005-07-01), Wang et al.
patent: 2001/0017883 (2001-08-01), Tiirola et al.
patent: 2002/0159507 (2002-10-01), Flaig et al.

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