Microwave Telecommunication Research Articles

Assessing equipment reliability for microwave radio-relay systems

Hitherto international specifications for microwave telecommunication systems have emphasized the performance in terms of propagation reliability, but in recent years there has been an increase in the demand for a more comprehensive assessment. This has necessitated an objective study of equipment reliability and the philosophy behind the use of protection switching. The article defines the MTBF parameters and derives a method of statistical analysis to determine MTBF values for a complete system from component data.

Simultaneous Transmission of Facsimile and Message Traffic Over a Microwave Baseband

This paper addresses itself to the problem of adding a high-speed graphic, supergroup bandwidth data channel to an existing message loaded baseband. The complete results of a numerical approach obtained by use of a digital computer are presented, as well as practical design curves developed to assist system planners in calculating peak-to-rms factors and rms value of composite, data-plus-message, baseband loading. The analysis deals with one facsimile supergroup added to an existing microwave telecommunication system.