Method For Detecting Navigation Beacon Signals Using Two Antennas Or Equivalent Thereof
First Claim
1. A method for detecting a plurality of navigation beacon signals, the method comprising:
- receiving, at a mobile receiver, a first navigation beacon signal measurement from a base station;
receiving, at the mobile receiver, a distinct second navigation beacon signal measurement from the base station; and
combining the first navigation beacon signal measurement with the distinct second navigation beacon signal measurement based on two antenna weight components to form an interference cancellation beam.
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Abstract
A method for detecting a plurality of navigation beacon signals by using either two antennas or a synthetic aperture antenna for receiving a plurality of distinct measurements, and combining the plurality of distinct measurements using a plurality of antenna weight components to form an interference cancellation beam. In one embodiment, the plurality of antenna weight components is determined by eigenvalue processing. In another embodiment, the plurality of antenna weight components is determined by simplified processing. In another aspect, a single antenna is used for receiving an originally received measurement. A copy of the originally received measurement is made and processed to achieve the proper time delay to emulate spatial diversity. The originally received measurement and the processed copy are combined to form an interference cancellation beam.
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Citations
20 Claims
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1. A method for detecting a plurality of navigation beacon signals, the method comprising:
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receiving, at a mobile receiver, a first navigation beacon signal measurement from a base station; receiving, at the mobile receiver, a distinct second navigation beacon signal measurement from the base station; and combining the first navigation beacon signal measurement with the distinct second navigation beacon signal measurement based on two antenna weight components to form an interference cancellation beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus configured to detect a plurality of navigation beacon signals, the apparatus comprising:
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an antenna system; a transceiver system coupled to the antenna system and configured to receive, via the antenna system, a first navigation beacon signal measurement from a base station, and a distinct second navigation beacon signal measurement from the base station; and a processor configured to combine the first navigation beacon signal measurement with the distinct second navigation beacon signal measurement based on two antenna weight components to form an interference cancellation beam. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An apparatus configured to detect a plurality of navigation beacon signals, the apparatus comprising:
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means for receiving, at a mobile receiver, a first navigation beacon signal measurement from a base station; means for receiving, at the mobile receiver, a distinct second navigation beacon signal measurement from the base station; and means for combining the first navigation beacon signal measurement with the distinct second navigation beacon signal measurement based on two antenna weight components to form an interference cancellation beam.
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20. A computer readable medium encoded with computer executable instructions for:
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determining a first antenna weight component; determining a second antenna weight component; and combining a first navigation beacon signal measurement received from a base station with a distinct second navigation beacon signal measurement received from the base station based on the first and second antenna weight components to form an interference cancellation beam.
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Specification