Approximating signal power and noise power in a system

Details Approximating signal power and noise power in a system Approximating signal power and noise power in a system

1998-03-11

2000-06-27

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708320, 708200, G06F 738, G06F 1710, G06F 700

Patent

active

060818220

ABSTRACT:
An electronic system with power approximation for circuit savings. Power approximation is provided by means for generating an absolute value of a real part of a signal, means for generating an absolute value of an imaginary part of the signal, means for generating a sum of the absolute values, and means for performing an averaging function on the sum such that a result of the averaging function provides an approximate power which indicates an actual power of the signal. The approximate power enables a determination of actual signal-to-noise ratio in the electronic system and a determination of a variety of other signal-to-noise determinations without the use of multipliers.

REFERENCES:
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patent: 4606009 (1986-08-01), Wiesmann
patent: 4789953 (1988-12-01), Gerrath
patent: 5052027 (1991-09-01), Poklemba et al.
patent: 5068818 (1991-11-01), Uramoto et al.
patent: 5930290 (1999-07-01), Zhou et al.

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