Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-12-27
2011-10-18
Mills, Donald (Department: 2462)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S208000, C370S329000, C370S330000, C370S331000, C370S332000
Reexamination Certificate
active
08040854
ABSTRACT:
In a wireless communication system wherein at least two communication units employ the TDD wireless communication method based on OFDMA, an OFDM wireless communication method and a wireless communication apparatus are disclosed. The first communication unit transmits a pilot signal over the whole subband zone configured of divisions of a predetermined system band. The second communication unit having a plurality of antennas estimates a propagation path of the subchannels constituting continuous frequency blocks making up a subband from the pilot signal received. The second communication unit determines the array weight used at the time of signal transmission to the first communication unit using the estimation result.
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Furueda Koichiro
Kuwahara Mikio
Murata Ichiro
Sato Atsuhiko
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Mills Donald
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