Patents Represented by Attorney Romain Mobarha
  • Patent number: 7684474
    Abstract: Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: March 23, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Douglas Neal Rowitch, Way-Shing Lee, Thunyachate Ekvetchavit