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:
Sep. 25, 2007
Filed:
Feb. 16, 2001
Martin Hans, Hildesheim, DE;
Frank Kowalewski, Salzgitter, DE;
Josef Laumen, Hildesheim, DE;
Gunnar Schmidt, Wolfenbuettel, DE;
Siegfried Baer, Pforzheim, DE;
Mark Beckmann, Braunschweig, DE;
Martin Hans, Hildesheim, DE;
Frank Kowalewski, Salzgitter, DE;
Josef Laumen, Hildesheim, DE;
Gunnar Schmidt, Wolfenbuettel, DE;
Siegfried Baer, Pforzheim, DE;
Mark Beckmann, Braunschweig, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The present invention provides a data transfer method for use in a CDMA system operating in the TDD mode. A data signal is transmitted in the form of a data stream of data bursts of different users between a first station and a second station via a multiplicity of antennas, and a reference signal is transmitted in connection with the specific data burst. In a first step, a reference signal is transmitted from the second station to the first station. In a second step, a channel estimation is performed in the first station based on the reference signal that is received from the second station. In a third step, the first station transmits a data burst to the second station via the multiplicity of antennas, it being possible to modify the transmission signals of various antennas having various amplitude and phase factors in accordance with the channel estimation.