Receiving method and apparatus in which a demodulating status is

Details Receiving method and apparatus in which a demodulating status is Receiving method and apparatus in which a demodulating status is

1997-05-21

2000-03-28

Le, Amanda T.

Pulse or digital communications

Transceivers

375227, 375285, 375324, 4552261, H04B 1700

Patent

active

060441062

ABSTRACT:
A noise detection apparatus includes a demodulator for demodulating an input signal, a determining circuit for determining a status of an output signal of the demodulator, a modulator for modulating a symbol of an output of the determining circuit, and a subtractor for subtracting between the input signal and the output signal of the modulator, in which a noise power is detected from an output of the subtractor. A circuit quality detection apparatus includes a demodulator for demodulating an input signal, a determining circuit for determining a status of an output signal of the demodulator, a modulator for modulating a symbol of an output of the determining circuit, a subtractor for subtracting between the input signal and the output signal of the modulator, a first squaring circuit for squaring an output of the subtractor, a first averaging circuit for averaging an output signal of the first squaring circuit, a second squaring circuit for squaring the input signal, a second averaging circuit for averaging an output signal of the second squaring circuit, and a ratio calculating circuit for calculating a ratio of an output of the first averaging circuit to an output of the second averaging circuit. Information of circuit quality is then detected from the output of the ratio calculating circuit.

REFERENCES:
patent: 4799025 (1989-01-01), Le Queau
patent: 5157694 (1992-10-01), Iwasaki et al.
patent: 5901173 (1999-05-01), Stephens et al.

Affiliated with

Also associated with

Rating

Receiving method and apparatus in which a demodulating status is does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Receiving method and apparatus in which a demodulating status is, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiving method and apparatus in which a demodulating status is will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1332423