With Increased Resolution, I.e., Higher Than Half A Chip (epo) Patents (Class 375/E1.015)
  • Methods and systems with simplified doppler spread classification
    Patent number: 8355473
    Abstract: Certain embodiments of the present disclosure propose methods and systems for classifying the Doppler spread based on the output of the frequency-tracking loop (FTL) discriminator in WiMAX systems to improve the performance of the channel estimation. The Doppler spread may be classified as low, medium or high based on the statistics of the output of the discriminator in the fine-tracking mode.
    Type: Grant
    Filed: April 19, 2009
    Date of Patent: January 15, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Junqiang Li, Je Woo Kim, Madihally J. Narasimha