Circuit arrangement for selecting a diversity channel

Details Circuit arrangement for selecting a diversity channel Circuit arrangement for selecting a diversity channel

1974-12-02

1976-06-15

Griffin, Robert L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

325 40, 325304, 3401461AG, H04B 702

Patent

active

039639886

ABSTRACT:
A circuit arrangement in a data transmission system for selecting a diversity channel is described. The transmitted information and parity bits are applied in the receiver, over a channel switch and a code frame switch in serial fashion, to a parity bit register and an information bit register. Inputs to a first parity stage are connected to outputs of a number of cells of a first part of the parity bit register and to n1 cells of a first part of the information bit register. A code frame switch connects each channel to a second part of the parity bit register and a second part of the information bit register. A number of cells of the second part of the information bit register and the output of the first parity stage are connected to a further parity stage assigned to each diversity channel. The outputs of the further parity stages are connected to a quality evaluation stage which produces control signals with which the channel switch switches through one of the diversity channels.

REFERENCES:
patent: 3628149 (1971-12-01), Swan
patent: 3665395 (1972-05-01), Bochmann
patent: 3781794 (1973-12-01), Morris
patent: 3829777 (1974-08-01), Muratani et al.

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