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:
Nov. 02, 2010
Filed:
Jan. 14, 2004
Chang-jun Ahn, Tokyo, JP;
Chang-Jun Ahn, Tokyo, JP;
Abstract
A transmitter codes data to be transferred, performs serial-parallel conversion of the data to two signal groups, and passes one of the groups to a first transmission unit and the other one to a second transmission unit. Each of the first transmission unit and the second transmission unit performs a prephasing process on each of signals included in the input signal group received, performs inverse Fourier transform thereon, and transmits the signal with a predetermined polarization. The polarity of the predetermined polarization of the first transmission is orthogonal to a polarity of the predetermined polarization of the second transmission unit. A receiver receives a signal transmitted from the transmitter with a predetermined polarization, performs Fourier transform thereon, performs MLD (Maximum Likelihood Detector) detection thereof, performs parallel-serial conversion in a parallel-serial converting unit, and decodes a signal originating from the parallel-serial conversion to output the transferred signal. The transmitter performs the prephasing process on each of the signals based on feedback information sent from the receiver in such a way that a probability that a same phase is generated becomes lower.