RF-AGC scheme insensitive to channel interference and deep...

Details RF-AGC scheme insensitive to channel interference and deep... RF-AGC scheme insensitive to channel interference and deep...

2008-05-09

2011-11-01

Vo, Nguyen (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S254000

Reexamination Certificate

active

08050643

ABSTRACT:
In a method and system for controlling gain in an RF receiver, an RF signal is analyzed over different attack and decay windows, from which the receiver determines (1) if the signal is in an attack condition with dip values below a threshold level thus indicating a need for increasing signal gain, or (2) if the signal is in a decay condition with threshold values above a threshold level thus indicating a need for decreasing signal gain. The receiver applies attack and decay windows of different sizes and in an asynchronous manner to create a gain control scheme that is insensitive to transient effects such as channel interference and deep fading that affect the intensities of an in-band signal.

REFERENCES:
patent: 5877909 (1999-03-01), Ko et al.
patent: 7577414 (2009-08-01), Mehr
patent: 7773014 (2010-08-01), Wu et al.

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