A Stochastic Analysis of Signal Sharing in a Bandpass Nonlinearity

Author

Lyons, Robert G.

Author_Institution

Telesat Canada,Ottawa,Ont.,Canada

Volume

22

Issue

11

fYear

1974

fDate

11/1/1974 12:00:00 AM

Firstpage

1778

Lastpage

1788

Abstract

When constant-amplitude signals and noise constitute the input to a bandpass device exhibiting a nonlinear input-output power characteristic and AM/PM conversion, the relative signal levels may change and intermodulation (IM) products are produced. A new and totally general method of evaluating the complex Fourier coefficient of any desired output component is presented. The analysis is based on repeated extraction using expected values of output signals dependent on one or more of the input signals, and makes use of joint envelope-phase probability distributions of the input conditioned on given signal phases. Several analytical examples demonstrating the application of the method and its advantages are discussed. Numerical results are presented for 2, 4, and 100 equal carriers into several types of soft limiters with quadratic AM/PM conversion.

Keywords

AM-PM conversion; Angle modulation systems; Bandpass limiting; Bandpass nonlinearities; FDM systems; Intermodulation distortions; Limiting, bandpass; Nonlinearities; Satellite multiple-access systems; Spectral analysis; Broadband amplifiers; Frequency division multiaccess; Noise level; Phase noise; Power amplifiers; Power generation; Radio frequency; Signal analysis; Stochastic processes; Stochastic resonance;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOM.1974.1092131

Filename

1092131