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:
Jan. 30, 2007
Filed:
Aug. 29, 2005
Takahiro Okada, Saitama, JP;
Yasunari Ikeda, Kanagawa, JP;
Takahiro Okada, Saitama, JP;
Yasunari Ikeda, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A transmission apparatus which prevents adversely affects from an adjacent channel even without provision of a guard band. An information sequenceinput to a mapping unit-of the transmission apparatus is mapped onto predetermined signal points by QAM modulation, etc. and output to a frequency converter-. The frequency converter-converts the frequency according to a center frequency of an input signal and outputs the result to a multiplexer. The other data series are processed in the same way as the data seriesare output to the multiplexer. The multiplexermultiplexes a plurality of input signals, while an IFFT processorperforms an inverse Fourier transform on the multiplexed signals all at once. The inverse Fourier transformed signal is quadrature-modulated by a quadrature modulator, converted to the RF band signal by the frequency converter, and transmitted from an antenna