The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2009
Filed:
Aug. 29, 2003
Chang-jun Ahn, Koganei, JP;
Masayuki Fujise, Koganei, JP;
Chang-Jun Ahn, Koganei, JP;
Masayuki Fujise, Koganei, JP;
Abstract
A serial-parallel converterof 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 modulatormodulates 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 splittersupplies the respective diagonal components of the output matrix to the input channels of an inverse Fourier transform unitas input signals. The inverse Fourier transform unitoutputs m number of inverse-Fourier-transformed signals obtained by performing inverse Fourier transform of the supplied input signals. A parallel-serial converterparallel-serial-converts the output m number of inverse-Fourier-transformed signals to output one transmission signal. A transmission unittransmits the output transmission signal. The difference between the frequency of any two channels of the inverse Fourier transform unitis equal to or larger than a predetermined coherent bandwidth.