Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-11-07
2006-11-07
Phu, Phuong (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C370S341000, C370S343000
Reexamination Certificate
active
07133458
ABSTRACT:
A communication apparatus, a signal component demultiplexing apparatus, and a filter apparatus for reducing a load of FFT processing in a receiver in multi-carrier communication, wherein the receiving apparatus provides a signal component demultiplexing apparatus before an FFT circuit and extracts only the required symbol series and the signal component demultiplexing apparatus has hierarchically arranged branching circuits each including a symbol delay circuit, a phase offset adjustment circuit, an adder circuit, and a subtractor circuit, one symbol string being output from the adder circuit and another symbol string being output from the subtractor circuit.
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Lerner David Littenberg Krumholz & Mentlik LLP
Phu Phuong
Sony Corporation
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