Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-02-27
2007-02-27
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S295000, C375S219000, C370S208000
Reexamination Certificate
active
11174401
ABSTRACT:
A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier transforming the tones to a plurality of time-domain samples (312), copying a plurality of the time-domain samples as a portion of a cyclic block (314), the cyclic block (314) contiguous with the time-domain samples (312), time-domain window filtering the time-domain samples (312) and the cyclic block (314) to form a portion of the wideband orthogonal frequency division multiplex symbol (310), wherein the time-domain window filter (350) is a function Φ(k) having the property that Φ(k)+Φ(k+Nfft) is about equal to a constant θ where Nfftis the number of tones, and transmitting the wideband orthogonal frequency division multiplex symbol (310).
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Balakrishnan Jaiganesh
Batra Anuj
Yamaguchi Hirohisa
Brady W. James
Ghebretinsae Temesghen
Shaw Steven A.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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