Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2008-02-21
2011-11-29
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S295000
Reexamination Certificate
active
08068552
ABSTRACT:
A method and system are provided for achieving spatial diversity of a wireless communications network. The method comprises arranging antennas on a transmitting wireless station into a plurality of antenna subgroups, wherein each of the antenna subgroups forms a virtual antenna, creating a plurality of beamformed MIMO channels using the plurality of virtual antennas, wherein each of the beamformed MIMO channel comprises a plurality of sub-carriers and corresponds to a virtual antenna, dividing sub-carriers in each of the plurality of beamformed MIMO channels into at least a first and second cluster, distributing a first amount of transmitting power to the first cluster and a second amount of transmitting power to the second cluster, wherein the first amount of transmitting power is substantially larger than the second amount of transmitting power.
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International Search Report and Written Opinion cited in PCT/US2008/054543 dated Aug. 14, 2008.
Hedayat Ahmadreza
Jin Hang
Lou Hanqing
Wang Genyuan
Aghdam Freshteh N
Cisco Technology Inc.
Edell Shapiro & Finnan LLC
Fan Chieh M.
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