Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2011-06-28
2011-06-28
Chou, Albert T (Department: 2471)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S210000
Reexamination Certificate
active
07969860
ABSTRACT:
A serial-parallel converter102of a transmitter apparatus receives an input of a signal to be transmitted and serial-parallel-converts this to output m (m≧2) number of intermediate signals. A unitary matrix modulator103modulates the output m number of intermediate signals into a unitary matrix of m rows and m columns whose components other than diagonal components are 0 and outputs the obtained matrix. A splitter111supplies the respective diagonal components of the output matrix to the input channels of an inverse Fourier transform unit112as input signals. The inverse Fourier transform unit112outputs m number of inverse-Fourier-transformed signals obtained by performing inverse Fourier transform of the supplied input signals. A parallel-serial converter113parallel-serial-converts the output m number of inverse-Fourier-transformed signals to output one transmission signal. A transmission unit114transmits the output transmission signal. The difference between the frequency of any two channels of the inverse Fourier transform unit112is equal to or larger than a predetermined coherent bandwidth.
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Ahn Chang-Jun
Fujise Masayuki
Chou Albert T
Howard & Howard Attorneys PLLC
National Institute of Information and Communications Technology
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