Activation method of communications apparatus with a...

Details Activation method of communications apparatus with a... Activation method of communications apparatus with a...

2005-06-14

2005-06-14

Ha, Dac V. (Department: 2634)

Pulse or digital communications

Systems using alternating or pulsating current

Antinoise or distortion

C375S297000, C332S124000, C332S160000, C332S162000, C455S063300, C455S067700

Reexamination Certificate

active

06907085

ABSTRACT:
First, a digital section constituting a linearizer is activated. Then, a feedback loop for updating a distortion compensation coefficient is opened. Then, the analog section on the antenna side is activated from an ADC, including a PA, etc., or a DAC. Then, both the ATT value of an ATT installed in a feedback route for updating the distortion compensation coefficient and the signal delay amount of a signal delay unit are adjusted to make a state such that the distortion compensation coefficient can be accurately updated. Then, the feedback loop is closed, a distortion compensation table having the distortion compensation coefficient as an entry is generated and after the generation is completed, the operation shifts to the normal operation.

REFERENCES:
patent: 5959499 (1999-09-01), Khan et al.
patent: 6275685 (2001-08-01), Wessel et al.
patent: 6697436 (2004-02-01), Wright et al.
patent: 6-54006 (1994-02-01), None
patent: 9-153849 (1997-06-01), None

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