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. 07, 2010
Filed:
Sep. 13, 2004
Applicants:
Ryoji Hayashi, Tokyo, JP;
Nobuhiko Ando, Tokyo, JP;
Inventors:
Ryoji Hayashi, Tokyo, JP;
Nobuhiko Ando, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A distortion compensating apparatus has an IQ imbalance compensation coefficient arithmetic circuitfor calculating, from correlation values of a transmission signal and a feedback signal, IQ imbalance compensation coefficients for compensating for IQ imbalance in a quadrature modulator; and an IQ imbalance compensatorfor compensating for the IQ imbalance with respect to a distortion compensated signal output from a distortion compensatoraccording to the IQ imbalance compensation coefficients, and for outputting to the quadrature demodulator