Patents by Inventor Stephan Pfletschinger

Stephan Pfletschinger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8929495
    Abstract: A method for equalizing the received signal in communications based on filterbank multicarrier modulations and, more particularly, to such a method and system especially advantageous in situations where the channel frequency selectivity is exceptionally high. The method significantly improves the performance of traditional filterbank equalization algorithms based on finite impulse response filters at the output of the receive filterbank. Furthermore, the system consists of multiple parallel stages, the number of which can be tuned to achieve a good compromise between performance and computational complexity. Thanks to this modular structure, and to the fact that most of the architecture can be efficiently implemented using fast Fourier transforms, the system presents a very low computational complexity compared to more traditional equalizers for filterbank multicarrier modulations.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: January 6, 2015
    Assignee: Fundacio Centre Technologic de Telecomunicacions de Catalunya
    Inventors: Francesc Xavier Mestre Pons, Marc Majoral Ramoneda, Stephan Pfletschinger
  • Patent number: 8503552
    Abstract: A digital communication system which applies channel coding and QAM modulation, where in QAM, at the transmitter, a number Q of bits is mapped to one QAM symbol, which is transmitted over the channel, at the receiver side, for each QAM symbol, a de-mapping is performed in order to obtain an L-value for each bit which corresponds to the QAM symbol, such that these L-values provide not only an estimation of the transmitted bits but also give information about their reliability.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: August 6, 2013
    Assignee: Fundacio Centre Tecnologic de Telecomunicacions de Catalunya
    Inventor: Stephan Pfletschinger
  • Publication number: 20110038406
    Abstract: A digital communication system which applies channel coding and QAM modulation, where in QAM, at the transmitter, a number Q of bits is mapped to one QAM symbol, which is transmitted over the channel, at the receiver side, for each QAM symbol, a de-mapping is performed in order to obtain an L-value for each bit which corresponds to the QAM symbol, such that these L-values provide not only an estimation of the transmitted bits but also give information about their reliability
    Type: Application
    Filed: April 15, 2008
    Publication date: February 17, 2011
    Inventor: Stephan Pfletschinger