Method and apparatus for high speed data transmission modulation and demodulation
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United States of America Patent
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Nov 5, 2013
Grant Date -
Jul 28, 2011
app pub date -
Jan 25, 2010
filing date -
Jan 25, 2010
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Abstract
A method and apparatus for communicating wirelessly comprising creating a plurality of sub-carrier signals by quadrature amplitude modulating data onto a plurality of sub-carrier frequencies spaced apart by a sub-carrier frequency spacing interval, frequency shifting the sub-carrier signals by one half of the sub-carrier frequency spacing interval, and modulating the sub-carrier signals onto a radio frequency carrier wave for wireless transmission.
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