Patents by Inventor Philipp HASSE

Philipp HASSE 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).

  • OFDM transmitter comprising a pre-distortion unit, an OFDM modulator and a filter
    Patent number: 9525442
    Abstract: An OFDM encoding apparatus for encoding OFDM symbols into an OFDM signal includes: a pre-distortion unit that pre-distorts OFDM symbols into pre-distorted OFDM symbols, the OFDM symbols including payload data and each being carried on multiple OFDM subcarriers; an OFDM generator that generates an OFDM signal from the pre-distorted OFDM symbols by OFDM modulating the pre-distorted OFDM symbols; and a filter that filters the OFDM signal to obtain a filtered OFDM signal, the filter being configured to attenuate the spectrum of the OFDM signal in frequency bands outside the signal bandwidth of the OFDM signal by applying a filter transfer function to the OFDM signal. The pre-distortion unit is configured to apply a pre-distortion transfer function equal to the inverse of the filter transfer function to the OFDM symbols.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: December 20, 2016
    Assignee: SONY CORPORATION
    Inventors: Lothar Stadelmeier, Jan Zoellner, Joerg Robert, Philipp Hasse
  • OFDM TRANSMITTER COMPRISING A PRE-DISTORTION UNIT, AN OFDM MODULATOR AND A FILTER
    Publication number: 20160006464
    Abstract: An OFDM encoding apparatus for encoding OFDM symbols into an OFDM signal includes: a pre-distortion unit that pre-distorts OFDM symbols into pre-distorted OFDM symbols, the OFDM symbols including payload data and each being carried on multiple OFDM subcarriers; an OFDM generator that generates an OFDM signal from the pre-distorted OFDM symbols by OFDM modulating the pre-distorted OFDM symbols; and a filter that filters the OFDM signal to obtain a filtered OFDM signal, the filter being configured to attenuate the spectrum of the OFDM signal in frequency bands outside the signal bandwidth of the OFDM signal by applying a filter transfer function to the OFDM signal. The pre-distortion unit is configured to apply a pre-distortion transfer function equal to the inverse of the filter transfer function to the OFDM symbols.
    Type: Application
    Filed: February 11, 2014
    Publication date: January 7, 2016
    Applicant: SONY CORPORATION
    Inventors: Lothar STADELMEIER, Jan ZOELLNER, Joerg ROBERT, Philipp HASSE