INFLUENCE OF INTERFERENCES AND DISTORTIONS ON THE TRANSMISSION OF DISCRETE INFORMATION WITH THE HELP OF FREQUENCY MODULATION,
Abstract
A method is proposed for calculating fringe distortions during transmission of discrete signals by frequency modulations for a wide class of interference. The use of this method is illustrated by derivation of formulas for fringe distortions which appear when there are momentary disruptions in the channel and when a low carrier frequency is used. Derivation of the principal formulas is based on the concept of the complex signal. A complex signal corresponding to an oscillation S(t) is defined as a signal with a spectrum equal to zero on negative frequencies and coinciding with double the spectrum for the oscillation S(t) on positive frequencies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1968
- Accession Number
- AD0683936
Entities
People
- S. P. Volfbein
Organizations
- National Air and Space Intelligence Center