Distortion compensation means and method

Details Distortion compensation means and method Distortion compensation means and method

1991-03-04

1992-05-05

Mottola, Steven

Amplifiers

Hum or noise or distortion bucking introduced into signal...

375 57, H03F 132

Patent

active

051111551

ABSTRACT:
Distortion introduced in phase modulated RF signals by amplifiers and other signal processors is substantially reduced by modifying complex modulating signals I,Q in a way that compensates for the amplifier phase error .phi..sub.e as a function of amplifier power P. In a preferred embodiment, I, Q are combined to calculate the amplifier power level and scaled by a parameter, e.g., K1=-d.phi..sub.e /dP, to provide factor B so that compensated signals I"=AQ+BI and Q"=AI-BQ, where A is a constant, can be determined. When an RF carrier modulated by I", Q" is passed through the distorting amplifier the amplifier induced distortion is cancelled. Substantial reduction in bit error probability is obtained. The method can also be used for post-distortion correction.

REFERENCES:
patent: 4462001 (1984-07-01), Girard

Affiliated with

Also associated with

Rating

Distortion compensation means and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Distortion compensation means and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distortion compensation means and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1415558