Diversity radio transmission system having a simple and economic

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

1981-01-27

1982-12-07

Ng, Jin F.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 44, 455 61, 455101, 455102, 375 40, H04B 702

Patent

active

043631320

ABSTRACT:
In a system for frequency-diversity transmission, separate and distinct frequency carriers are obtained from the frequency modulation of an oscillator by a pure frequency with an index such that a certain number of Bessel lines thus obtained constitute a corresponding number of separate carriers. All the carriers are subsequently 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 tropospheric or ionospheric scatter propagation can be constructed in a simple manner and at low cost, with a high diversity order.

REFERENCES:
patent: 3023309 (1962-02-01), Foulkes
patent: 3258694 (1966-06-01), Shepperd
patent: 3689841 (1972-09-01), Bello et al.
patent: 3980945 (1976-09-01), Bickford
patent: 4142155 (1979-02-01), Adachi

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