INFORMATION TRANSMISSION IN RF SYSTEMS WITH MULTI-PATH PROPAGATION
Abstract
Multi-path propagation is considered as a f nction of the differences in propagation times for the several paths. The percent of time that a transmitted signal of constant a plitude will exceed a threshold level is determined for systems with small propagation-time differences. The effect of the antenna pattern on this statistic is considered. In addition, the envelope auto-correlation function for the received signal is determined as a function of the phase stability of the various signals making up the received signal. For systems having large but fixed propagation-time differences between the received components, and with thermal noise at the receiver, the information capacities of the systems are determined to lie within ce tain limits. A means for attaining the upper limit is determined. Numerical results are obtai ed for systems where there are only two propagation paths. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1960
- Accession Number
- AD0256675
Entities
People
- David D. Mcnelis
- H. Myron Swarm
Organizations
- University of Washington