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:
Jul. 15, 2008
Filed:
Dec. 22, 2003
Mohammad J Borran, Houston, TX (US);
Prabodh Varshney, Coppell, TX (US);
Hannu Vilpponen, Oulu, FI;
Panayiotis Papadimitriou, Euless, TX (US);
Mohammad J Borran, Houston, TX (US);
Prabodh Varshney, Coppell, TX (US);
Hannu Vilpponen, Oulu, FI;
Panayiotis Papadimitriou, Euless, TX (US);
Nokia Corporation, Espoo, FI;
Abstract
A apparatus and method for improved performance in radio telecommunications systems, and in particular multi-carrier code division multiple access (MC-CDMA) networks that employ pulse-shaping filters on the transmit side of a radio link. In order to more accurately transmit a radio signal bearing a symbol sequence, the modulated and spread information stream is upsampled using a technique that involves inserting zeros in the frequency domain. A corresponding downsampling procedure on the receive side permits reconstruction of the transmitted symbols. A new channel estimation algorithm may also be used, and the improved channel estimation advantageously employed to obtain more faithful symbol detection.