Radio data transmission system

Details Radio data transmission system Radio data transmission system

1987-12-24

1989-09-05

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

455277, 455278, 375100, H04B 106

Patent

active

048646415

ABSTRACT:
A radio data transmission system wherein signals received via a plurality of diversity antennas are switched at a cycle of subtime slot so that, when the reception level of at least one antenna is sufficiently high to receive the required signal in the relevant time slot, the digital signal in that time slot can be detected properly even if the reception level of any other antenna is not sufficiently high. Accordingly, the code error rate can be minimized by constituting the system in such a manner that the correlation of variations in the reception levels of the diversity antennas becomes extremely low.

REFERENCES:
patent: 4143369 (1979-03-01), Ayers
patent: 4370522 (1983-01-01), Takeda et al.
patent: 4525869 (1985-06-01), Hamada et al.
patent: 4611334 (1986-09-01), Engel et al.
patent: 4696058 (1987-09-01), Tachita et al.
patent: 4733402 (1988-03-01), Monsen
patent: 4756023 (1988-07-01), Kojima
F. Adachi et al., "A Periodic Switching Diversity Technique for a Digital FM Land Mobile Radio", 1978, IEEE, pp. 211-219.

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