US 4,063,174 AGranted

Circuit arrangement for diversity data transmission

AssigneeSiemens Aktiengesellschaft

InventorsJutta Das Gupta, Wernhard Markwitz, Werner Paetsch

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Abstract

A circuit arrangement is described for carrying out a diversity selection from a number of data channels. The diversity channels are connected to a majority logic decision stage. The diversity channels and the output from the majority logic stage are connected to a channel switch as data channels. By means of a quality evaluation stage, one of the diversity channels is switched through to the data bank under the control of signals produced responsive to an indication that a minority of the diversity channels is better than each of the remaining diversity channels by a given quality difference. The majority decision channel is switched through with one of the control signals when the majority of the diversity channels are poorer than the remaining diversity channels during the given test period by another given quality difference.

Claims5

Dependent claims

A circuit arrangement for increasing the transmission quality in a diversity data transmission system, comprising:

a plurality of diversity data channels,
majority logic circuit means connected to receive said diversity data channels for emitting a majority signal indicating which binary value a majority of said diversity data channels is carrying,
channel switch means having inputs connected to receive said diversity data channels and said majority signal as data channels,
quality evaluation means for operating said channel switch means to emit the signal on one of said diversity data channels when during a predetermined test period a minority of said diversity data channels are of better transmission quality than the remaining diversity data channels by a first predetermined value, said quality evaluation means being operable to cause said channel switch means to switch through said majority signal when during said test period the majority of said diversity data channels are of poorer quality than the remaining diversity data channels by a predetermined second value.

1 more element

Dependencies are inferred from the claim text.