Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2011-05-17
2011-05-17
Duong, Frank (Department: 2474)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
Reexamination Certificate
active
07944891
ABSTRACT:
The present invention provides a system and method for transmit beamforming in a Frequency Division Duplex communication system. A first step (600) includes correcting for differences between transceiver receive and transmit responses within a base station. A next step (604) obtaining a beamforming weight of a phase antenna array on an uplink. A next step (606) transforming the uplink beamforming weight a downlink beamforming weight by applying a phase correction that is a function of wavelength at the uplink and downlink frequencies and distance between antenna elements.
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Tong Fei
Vook Frederick W.
Whinnett Nick W.
Duong Frank
Motorola Mobility, Inc.
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