Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Nokia Siemens Networks Gmbh & Co Kg

Nokia Solutions and Networks Gmbh & Co. Kg

Holger Gaebler

Thomas Haustein

Wolfgang Zirwas

Volker Jungnickel

Thomas Hindelang

Andreas Forck

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&#x2260;P. A corresponding method is used for processing information received by radio. Base stations and mobile radio stations carry out the method.

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

In a method and/or an OFDM device for SC-FDMA data transmission, a sequence of input data is transformed by means of a discrete transformation as transformed data signals of coded and modulated data signals on first frequency channels into a first frequency space over a first number of frequencies. The transformed data signals are mapped on second frequency channels in a second frequency space with a larger second number of frequencies. The transformed data signals on the second frequency channels are inverse-transformed using an inverse transformation. Data inversely transformed in such a way are provided for transmission. The transformed data signals are mapped into a frequency range of the second frequency channels in such a way that a constant component of the transformed data signals is mapped centrally within the frequency range.

Method and/or OFDM device for SC-FDMA data transmission

Growing community of inventors

Berlin, Germany

Holger Gaebler