Patents by Inventor Mathias Schulist

Mathias Schulist 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).

  • Multipath propagation delay determining means using periodically inserted pilot symbols
    Patent number: 6731622
    Abstract: The invention relates to a multipath propagation delay determining means (STU, FIGS. 6, 7) for determining a power delay spectrum (DPS) of a CDMA signal transmission between a CDMA base station (BS) and a CDMA mobile station (MS) on a plurality of propagation paths (P1, P2) within a cell (CL) of a CDMA communication system, comprising an A/D conversion means (A/D) for converting an analog CDMA multipath signal (S1, S2) received from at least one antenna (Ant1, Ant2) within said cell (CL) into a digital CDMA multipath signal (S1, S2) consisting of consecutive radio frames (RF1 . . . RFn) including consecutive time slots (TS1 . . . TSm) with complex pilot symbols (PSi) and data symbols (Pdi), a demultiplexing means (PI-DEMUX) for extracting complex pilot symbols (PSi) and data symbols (PDi) from at least two consecutive time slots (TSk−1, TSk, TSk+1) of each radio frame (RFn) and for storing them consecutively in a memory means (BUF) thereof; and a searching means (S1 . . .
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: May 4, 2004
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Georg Frank, Mathias Schulist, Wolfgang Granzow, Alexander Maurer, Branislav Popovic