METHOD AND SYSTEM FOR UPLINK BEAMFORMING CALIBRATION IN A MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEM
First Claim
1. A method for communication, the method comprising:
- in a wireless communication device comprising a receiver, a transmitter and a transmitter and a plurality of antennas;
determining transmit phase relationship between at least two of said plurality of antennas based on radio frequency signals received by said plurality of antennas, wherein said radio frequency signals are received from one or more antennas of a base station; and
transmitting radio frequency signals to said base station from said at least two of said plurality of antennas using said determined transmit phase relationship.
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Accused Products
Abstract
A wireless transceiver, comprising a transmitter, a receiver and a plurality of antennas, determines transmit phase relationship between at least two of antennas based on radio frequency (RF) signals received via the at least two antennas from one or more antennas of a base station. RF signals are transmitted via the at least two antennas utilizing the determined transmit phase relationship. The receiver is calibrated based on receiver performance determined from the received RF signals for subsequent reception of RF signals. The transmit phase relationship is dynamically adjusted based on the transmit RF measurements and the determined receiver performance. Transmit channel qualities are determined for each transmit antenna based on the transmit RF measurements and the dynamically adjusted transmit phase relationship. Transmit antennas are dynamically selected based on the adjusted transmit phase relationship, the characterized transmit channel qualities and the determined receiver performance for subsequent transmission to the base station.
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Citations
20 Claims
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1. A method for communication, the method comprising:
in a wireless communication device comprising a receiver, a transmitter and a transmitter and a plurality of antennas; determining transmit phase relationship between at least two of said plurality of antennas based on radio frequency signals received by said plurality of antennas, wherein said radio frequency signals are received from one or more antennas of a base station; and transmitting radio frequency signals to said base station from said at least two of said plurality of antennas using said determined transmit phase relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for communication, the system comprising,
one or more processors and/or circuits for use in a wireless communication device comprising a plurality of antennas, said one more processors and/or circuits comprising a receiver and a transmitter, and said one or more processors and/or circuits being operable to: -
determine transmit phase relationship between at least two of said plurality of antennas based on radio frequency signals received by said plurality of antennas, wherein said radio frequency signals are received from one or more antennas of a base station; and transmit radio frequency signals to said base station from said at least two of said plurality of antennas using said determined transmit phase relationship. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification