Spread spectrum adaptive antenna interference canceller
AssigneeSignatron, Inc.
InventorsSteen A. Parl, John N. Pierce
Life of this patent
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Abstract
An adaptive power equalizer circuit for use in a spread spectrum receiver system which includes an antenna system 12, 13 and a receiver 11, the circuit comprising adaptive power inversion circuitry 15 for producing a first signal having a minimized power level and a second signal having a substantially higher power level than that of the first signal. Such signals are supplied to a power equalizer circuitry 16 which equalizes the power levels thereof, such equalized power level signals then being combined in a suitable combiner circuit 30 for producing an output receiver output signal for the receiver 11.
Claims16
An adaptive power equilizer means for use in a spread spectrum signal receiver system which includes at least two antenna means, each of which receives at least two incoming signals from unknown directions, one of said incoming signals having a higher power level than the other, and receiver means, said adaptive power equalizer means comprising
- adaptive means responsive to said incoming antenna signals for producing a first signal in which the signal having the higher power level has been effectively cancelled and for producing a second signal;
- power equalizer means responsive to said first and second signals for causing the power levels of said first and second signals to be substantially equal;
- and
- means for combining said substantially equalized power level signals for providing an output receiver signal for use by said receiver means.
Dependencies are inferred from the claim text.