Modem Tests on an Ionospheric Channel Simulator.
Abstract
This project provides experimental data on the performance of an NCFSK digital modem operating over the ESSA ionospheric channel simulator. The channel conditions simulated were typical of a two-path medium composed of a nonfading ground wave signal and a delayed, Rayleigh-fading sky wave signal. During tests, the probability of a bit error occurring was measured as a function of various parameters, such as signal-to-noise ratio, time delay of the sky wave signal, frequency shift and frequency spread of the sky wave signal, and multipath power ratio. Noise for the tests was supplied from a Gaussian noise generator, an atmospheric noise simulator, and recordings of man-made noise. Data are also provided on the distribution of errors and error-free intervals. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1969
- Accession Number
- AD0861431
Entities
People
- J. R. Juroshek
- L. J. Demmer
Organizations
- Institute for Telecommunication Sciences