Patent · US Active

Sharing AGC loop between demodulator and spectrum analysis system

US8086199B2 · kind B2 · utility

1Cited by

8References

25Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

David Kloper · Santa Clara, US
Yohannes Tesfai · Falls Church, US
Chandra Vaidyanathan · Rockville, US

Key dates

Filing date	May 22, 2008
Grant date	Dec 27, 2011
Priority date	—
Expiry date	Oct 14, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH03G3/3068
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Systems and methods for sharing an AGC loop between a wireless data demodulator and a spectrum analysis module that operates simultaneously with the data demodulator. In one embodiment, a predetermined hold time prevents the AGC loop from changing gain too often, thereby allowing the spectrum analysis module to collect reliable data. In another embodiment, the hold time may be extended to coincide with a spectrum analysis event, such as a boundary of an FFT block. In still another embodiment, an FFT valid signal is provided such that collected FFT blocks can be designated as suspect and then subsequently processed accordingly.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.