FREQUENCY ASSIGNMENT STUDIES.
Quarterly progress rept. no. 5, 1 Nov 66-31 Jan 67,
ELECTRO TECHNICAL ANALYSIS CORP TUCSON ARIZ
Pagination or Media Count:
A report is made on a study to improve electromagnetic compatibility in the field army through development of frequency-assignment practices. The theoretical analysis of the radio-relay frequency assignment problem is extended. The modified exclusion matrix is used to define a product involving the matrix, the grouping of assignments at nodes, and the frequency assignment requirements. It is shown that the terms of this product can be used to define mappings and bounding rules which, if satisfied, assure an interference-free frequency assignment. A procedure is proposed which satisfies these rules. The actual procedure represents a modification of the current ABM type of scheme. A method for achieving a high degree of protection from intermodulation is included as an integral part of the assignment method. The physical and analytical basis for the method is included. The fm receiver module in the Evaluation Model is extended to cover the general case of a desired signal modulated with band-limited white noise plus multiple noise-modulated interferers whose amplitudes may approach that of the desired signal. Author
- Radio Communications