Maximum Entropy Spectral Demodulator Investigation.
Abstract
The work presented in this report examined the feasibility of using maximum entropy spectral estimation techniques for demodulating frequency shift keyed signals in the presence of interfering signals and noise. Conventional frequency shift keyed demodulators derive an output representative of the instantaneous frequency, an output which can take only a single value at any instant. Spectral estimation allows multiple values of discrete frequencies to be resolved simultaneously. The ability to resolve several values of discrete frequencies simultaneously opens up the way to simultaneous detection and demodulation of both the desired signal and the interference. Communication decisions can then be made for the desired signal on the basis of frequency, and interference can be detected, recognized, and ignored based upon frequency. This report examines this demodulator capable of obtaining 15 to 20 decibels of interference rejection appears to be feasible given that the state of the art in analog to digital converters is 16 binary digits.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1979
- Accession Number
- ADA075157
Entities
People
- Robert Guy Van Meter
Organizations
- State University of New York