Investigation of the Use of Frequency-Division Multiple Access for Application with a Mix of User Terminals. Volume I. Summary and Results.
Abstract
This report presents the results of research performed to investigate the application of the frequency-division multiple-access (FDMA) technique for providing a mix of user terminals of differing characteristics--such as data rates, transmitter powers, and receiver sensitivities--with simultaneous access capability to a limiting satellite repeater. A computer program (SYSCON) has been developed to model a PSK/FDMA satellite communication system and to optimize its performance in operation with a mix of user terminals, through selection of power and frequency plans. This capability is achieved through optimization of a norm defined as the weighted sum of the link error rates and representing the figure of merit or a measure of the system's communications performance with respect to both the power and the frequency of the links. To obtain the expression for the error rate at the input of the FDMA links, it was necessary to derive general analytic expressions for the limiter output signal, the intermodulation, and the noise components, when n signals are transmitted simultaneously through the satellite repeater. The report consists of three volumes. Volume One provides a summary of the study which includes a description of the analysis approach, documentation of the pertinent equations, numerical results, and conclusions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1973
- Accession Number
- ADA047042
Entities
People
- D. Thomas Magill
- John K. Leung
- Pravin C. Jain
- V. Elaine Hatfield
Organizations
- SRI International