Data transmission in a multi-user OFDM system with adaptive modulation

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United States of America Patent

PATENT NO 8848651
SERIAL NO

12311734

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Abstract

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A method processes information to be sent via radio, according to which first bits represent a first number of N-tuples and second bits represent a second number of N-tuples. The first bits are to be sent using a first group of sub-bands of a frequency band, and the second bits are to be sent using a second group of sub-bands of the frequency band. A first modulation method is used for the first bits and a second modulation method is used for the second bits. The first bits are rearranged, forming M-tuples, and a symbol is formed from each M-tuple according to the first modulation method. The second bits are rearranged, forming P-tuples, and a symbol is formed from each P-tuple according to the second modulation method, and M≠P. A corresponding method is used for processing information received by radio. Base stations and mobile radio stations carry out the method.

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Patent Owner(s)

  • FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.;NOKIA SIEMENS NETWORKS GMBH & CO. KG;NOKIA SOLUTIONS AND NETWORKS GMBH & CO. KG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gaebler, Holger Berlin, DE 2 20
Haustein, Thomas Potsdam, DE 131 1296
Jungnickel, Volker Berlin, DE 29 722
Zirwas, Wolfgang München, DE 120 1667

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