Adaptive Array Behavior with Periodic Envelope Modulated Interference.

Abstract

The authors present a method for determining the effects of envelope modulated interference on an LMS (least mean square) adaptive array. The interference is assumed to have periodic envelope modulation with a bandwidth small compared to the carrier frequency. For such interference, the method allows one to calculate the periodic steady-state behavior of the array weights and the resulting array performance. As an example, computed are the effects of an ordinary amplitude modulated (AM) interference signal on the array. It is shown that such interference causes the array to modulate the desired signal envelope but not its phase. With a DPSK desired signal, AM interference is found to have about the same effect on bit error probability as CW interference. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA127245

Entities

People

  • A. S. Al-ruwais
  • R. T. Compton Jr.

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Carrier Frequencies
  • Communication Channels
  • Communication Systems
  • Differential Equations
  • Digital Communications
  • Equations
  • Fourier Series
  • Frequency
  • Government Procurement
  • Governments
  • New York
  • Numerical Analysis
  • Phase Modulation
  • Probability
  • Random Variables
  • Spread Spectrum
  • Steady State

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.
  • Radio communications and signal processing.