Modulation/demodulation apparatus using matrix and anti-matrix

A modulation and demodulation system is provided. The system uses n sub-carrier frequencies and an oversampling positive integer and includes a modulation circuit and a demodulation circuit. The modulation circuit includes a modulation ROM that stores columns of elements independently in a modulatio...

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Bibliographic Details
Main Author MATSUNAGA HAYAMI
Format Patent
LanguageEnglish
Published 05.08.2008
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
JAMMING OF COMMUNICATION
MULTIPLEX COMMUNICATION
SECRET COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A modulation and demodulation system is provided. The system uses n sub-carrier frequencies and an oversampling positive integer and includes a modulation circuit and a demodulation circuit. The modulation circuit includes a modulation ROM that stores columns of elements independently in a modulation ROM matrix. The demodulation circuit includes 2n numbers of a ROM 1 that stores elements of a combined matrix. The combined matrix is generated by combining a number of inverse matrices where the inverse matrices are generated from the modulation ROM.
Bibliography:Application Number: US20040496162