Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2008-11-12
2010-06-22
Deppe, Betsy L (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S267000
Reexamination Certificate
active
07742550
ABSTRACT:
A wireless communication apparatus which uses fast Fourier transforms (FFTs) in an orthogonal frequency division multiplexing (OFDM) receiver which incorporates a beam space antenna array. The beam space antenna array may be implemented with a Butler matrix array. The beam space antenna array may be a circular array, vertical array, or a combination of both circular and vertical arrays, for providing the desired angular antenna coverage. In one embodiment, the antenna array is optimized because the FFTs are linear invariant transform operators, whereby the order of operations in the OFDM receiver can be interchanged.
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Olesen Robert Lind
Pietraski Philip J.
Reznik Alexander
Yang Rui
Deppe Betsy L
InterDigital Technology Corporation
Volpe and Koenig P.C.
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