Apparatus for selecting a receiver among a plurality of receivers in a diversity receiver system based upon automatic gain correction
AssigneeHarman Becker Automotive Systems GmbH
InventorsHermann Link, Stefan Schradi
Life of this patent
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Abstract
A diversity receiver system includes a plurality of radio receivers that each provide a uniquely associated receiver output signal and a uniquely associated receiver control signal indicative of the amount of gain applied by the associated radio receiver to create the uniquely associated receiver output signal. A selection mechanism receives the receiver control signals, and determines which of the radio receivers has applied the smallest gain correction to its associated receiver output signal, and provides a diversity receiver output signal indicative of the receiver output signal associated with the receiver that applied the smallest gain correction.
Claims12
A receiver selection system that provides an output signal selected from at least first and second radio receivers, the selection system comprising:
- a comparator that receives a first control signal from one of the radio receivers and a second control signal from another of the radio receivers, and determines which of the control signals has the lowest level value and provides a selection signal indicative of the selected control signal;
- and
- a switching element responsive to the selection signal, which receives a first data signal from the first radio receiver and a second data signal from the second radio receiver, and based upon the state of the selection signal selects as the output signal either the first data signal or the second data signal, where
- the first control signal is indicative of the amount of gain applied by first automatic gain control circuitry of the first radio receiver to create the first data signal, and the second control signal is indicative of the amount of gain applied by second automatic gain control circuitry of the second radio receiver to create the second data signal.
A diversity receiver system, comprising:
- a plurality of radio receivers that each provide a uniquely associated receiver output signal and a uniquely associated receiver control signal indicative of the amount of gain applied by the associated radio receiver to create the uniquely associated receiver output signal;
- and
- a selection mechanism that receives the receiver control signals, and determines which of the radio receivers has applied the smallest gain correction to its associated receiver output signal, and provides a diversity receiver output signal indicative of the receiver output signal associated with the receiver that applied the smallest gain correction.
Dependencies are inferred from the claim text.