Patents by Inventor Mikko Kokkonen

Mikko Kokkonen 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).

  • Synchronization and sampling frequency in an apparatus receiving OFDM modulated transmissions
    Patent number: 6125124
    Abstract: An OFDM receiver determines (12; 27) the pulse response of a radio channel and locates (13; 14) its starting point, end point and the maximum and its value. The difference between the end point and the starting point gives the length of the pulse response. A guard interval time corresponding to the guard interval separating the OFDM symbols is set (17; 18) in the receiver in such a manner that it covers the most significant components of the pulse response. A slow and monotonous temporal shift of the pulse response between measurement rounds indicates an error in the sampling frequency. The error is corrected (23; 31) in such a manner that the pulse response shift is compensated for.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: September 26, 2000
    Assignee: Nokia Technology GmbH
    Inventors: Jari Junell, Mika Kasslin, Mikko Kokkonen