Method and system for noise reduction in measurement...

Details Method and system for noise reduction in measurement... Method and system for noise reduction in measurement...

2007-09-04

2007-09-04

Le, Thanh Cong (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C375S346000

Reexamination Certificate

active

10737440

ABSTRACT:
An N-element noise model of a receiver is created, with the number of noise elements (N) determined by the equation N=(number of variable gain components+1). The components in the model are grouped into domains with each noise element associated with a domain. The domains are defined so that the noise contributions of the components within each domain are independent of the receiver gain state. A noise value is computed for each noise element. Each noise value is determined with reference to a particular point in the model, and is computed in a reference state. Input-referred noise values are calculated using each noise value and the current gain state data for the receiver. A composite input-referred noise value is computed using the input-referred noise values and subtracted from a measurement signal to reduce noise in the signal. The composite noise value can automatically be re-calculated for any receiver gain state.

REFERENCES:
patent: 6122309 (2000-09-01), Bergstrom et al.
patent: 2007/0129042 (2007-06-01), Kristensson et al.

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