Method and apparatus for complementary cumulative distribution driven level convergence for spectrum sensing
US8306162B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Nov 28, 2007 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Apr 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/185
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for use in a digital communications receiver for controlling an input signal level (200) into an analog-to-digital converter (ADC) initially receives a sample sequence (201) where a threshold crossing rate is measured as a percentage samples of an input signal that exceed the threshold (203). The error between the measured threshold crossing rate and a desired reference threshold crossing rate is calculated (205) and an error signal is then utilized in a feedback loop to control the receiver gain such that the error is reduced (207).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.