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:
May. 05, 2009
Filed:
Mar. 08, 2005
Applicants:
Lars Brötje, Wachtberg, DE;
Karl Dirk Kammeyer, Buchholz, DE;
Volker Kühn, Bremen, DE;
Sven Vogeler, Bremen, DE;
Inventors:
Lars Brötje, Wachtberg, DE;
Karl Dirk Kammeyer, Buchholz, DE;
Volker Kühn, Bremen, DE;
Sven Vogeler, Bremen, DE;
Assignee:
Infineon Technologies AG, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
Distortions of radio signals transmitted in data blocks in an OFDM method, the distortions being caused by IQ asymmetries, can be estimated and subsequently equalized by means of specific reference data symbols which are transmitted at the transmitter end and may be part of a preamble. The method can be used particularly advantageously in a direct-mixing receiver.