NOISE-LIKE SIGNALS AND THEIR DETECTION BY CORRELATION

Abstract

Investigation was devoted to communication systems in which a noise- like signal is used as an information carrier and cross-correlation at the receiver is used for detection. The probability of error in the reception of signals by such systems (designated NOMAC systems) is given as a function of input S/N ratio, input-to-output bandwidth ratio, and the number of possible signals. The effect of having a noisy version of the signal with which the input signal is cross-correlated is concluded. In addition, the effect of using an arbitrary threshold value of the output as a criterion of detection is shown to result in a loss of available channel capacity and correspondingly higher probability of error. Proposed practical systems employing NOMAC principles are described as well as an experimental system which was constructed and tested. The experimental results are shown to agree with the theory.

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Document Details

Document Type
Technical Report
Publication Date
May 26, 1952
Accession Number
AD0004641

Entities

People

  • Bennett L. Basore

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Autocorrelation
  • Coding
  • Communication Systems
  • Correlation Techniques
  • Diagrams
  • Distribution Functions
  • Frequency Bands
  • Gaussian Distributions
  • Generators
  • Grids
  • Information Theory
  • Modulation
  • Numerical Integration
  • Probability Distributions
  • Schematic Diagrams
  • Waveforms

Fields of Study

  • Engineering

Readers

  • Computer Science.
  • Radar Systems Engineering.