Patents by Inventor Zhenzhong Gu

Zhenzhong Gu 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).

  • Detection of impulse noise using unused codes in CDMA systems
    Patent number: 6859488
    Abstract: An impulse detector which can detect both low and high levels of impulse noise in a CDMA system is comprised of circuitry to calculate the background noise level in unused codes. Another circuit calculates the average noise power in the unused codes of each spreading interval to output the noise power per spreading interval. This average is continuously averaged over spreading intervals by another circuit which outputs the average background noise power. A comparator compares the noise power in the current spreading interval with the background noise power plus a programmable threshold and generates an erasure indication if the background noise power plus a discrimination threshold is exceeded.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: February 22, 2005
    Inventors: Yehuda Azenkot, Zhenzhong Gu, Selim Shlomo Rakib
  • Detection of impulse noise using unused codes in CDMA systems
    Publication number: 20040057502
    Abstract: An impulse detector which can detect both low and high levels of impulse noise in a CDMA system is comprised of circuitry to calculate the background noise level in unused codes. Another circuit calculates the average noise power in the unused codes of each spreading interval to output the noise power per spreading interval. This average is continuously averaged over spreading intervals by another circuit which outputs the average background noise power. A comparator compares the noise power in the current spreading interval with the background noise power plus a programmable threshold and generates an erasure indication if the background noise power plus a discrimination threshold is exceeded.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Inventors: Yehuda Azenkot, Zhenzhong Gu, Selim Shlomo Rakib