Diversity radio transmission system having a simple and...

Details Diversity radio transmission system having a simple and... Diversity radio transmission system having a simple and...

H - Electricity

04

B

325/42

H04B 7/02 (2006.01) H04B 7/12 (2006.01)

Patent

CA 1165819

A DIVERSITY RADIO TRANSMISSION SYSTEM HAVING A SIMPLE AND ECONOMICAL STRUCTURE Abstract of the Disclosure In a system for frequency-diversity transmission, separate and distinct frequency carriers are obtained from the frequency modulation of an oscillator by a pure fre- quency with an index such that a certain number of Bessel lines thus obtained constitute a corresponding number of separate carriers. All the carriers are sub- sequently modulated by the information, then power- amplified in a single amplifier having a peak power equal to that of a single signal whose effective power would be the sum of those of the separate carriers. By means of this system, equipment for radio communication by tropo- spheric or ionospheric scatter propagation can be con- structed in a simple manner and at low cost, with a high diversity order. -1-

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