Apparatus and method for controlling a digital automatic...

Details Apparatus and method for controlling a digital automatic... Apparatus and method for controlling a digital automatic...

2005-08-10

2009-06-02

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Receivers

Automatic gain control

C375S260000, C375S316000, C375S346000, C455S135000, C455S138000, C455S226200, C455S226300, C455S232100, C330S254000

Reexamination Certificate

active

07542530

ABSTRACT:
An apparatus and method for controlling a digital AGC in a communication system in which power changes significantly from frame to frame. In the digital AGC controlling apparatus, an SNR estimator estimates an uplink SNR of a next frame. A power measurer measures uplink received power of every frame. A gain calculator estimates uplink power of an nthframe using an SNR estimate of an (n−1)thframe received from the SNR estimator and a received power measurement of the (n−1)thframe received from the power measurer, and calculates a gain to be applied to the nthframe in the digital AGC using the uplink power estimate of the nthframe.

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