Noise Loading of FM Systems the Noise-Power-Ratio (NPR) and Customer Requirements

1 January 1973

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

p. 113
https://doi.org/10.1109/gmtt.1973.1123113

Abstract

Amplitude and phase non-linearities in multichannel FM transmission systems must be closely controlled to avoid excessive intermodulation noise in the derived message channels. Though parameters may be measured individually, their combined effect on distortion performances most directly measured by applying a standard test signal to the FM system which closely simulates the working multi-channel baseband signal. For high capacity systems, this baseband signal is closely approximated by a band of Gaussian (white) noise, band-limited at the same frequencies as the working baseband.

Keywords

BASEBAND
DISTORTION MEASUREMENT
CONTROL SYSTEMS
NOISE LEVEL
PHASE NOISE
PERFORMANCE EVALUATION
MEASUREMENT STANDARDS
SYSTEM TESTING
WHITE NOISE
GAUSSIAN NOISE

This publication has 0 references indexed in Scilit: