Multiplex communications – Generalized orthogonal or special mathematical techniques – Fourier transform
Patent
1997-09-18
2000-06-27
Hsu, Alpus H.
Multiplex communications
Generalized orthogonal or special mathematical techniques
Fourier transform
370484, 370526, H04J 1108, H04J 312
Patent
active
060815027
ABSTRACT:
A method for reducing probability of clipping in an IFFT-based (inverse fast Fourier transform based) multitone communication transmitter, the method including applying an IFFT to an original sequence thereby to generate an IFFT output sequence, if the IFFT output sequence fits a predetermined clipping profile, applying at least one transformation to the IFFT output sequence, thereby to define a transmitted sequence, the transformation-applying step including decomposing the IFFT output sequence into a first component sequence and a second component sequence, rearranging at least one of the first and second component sequences with respect to the other, thereby to define third and fourth component sequences, and combining the third and fourth component sequences into a final output sequence.
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Paneth Eric
Reuven Ilan
Ho Duc
Hsu Alpus H.
Orckit Communications Ltd.
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