Patents by Inventor Wai Kwok Law

Wai Kwok Law 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).

  • Virtual drive test tool
    Patent number: 8781797
    Abstract: A channel emulator reads a record of captured radio signal data of a group of cellular base stations in a fielded cellular network from a memory. Based on the record of the captured radio signal data, the channel emulator generates a simulation of a radio environment of the fielded cellular network. In one aspect, the simulation generates a number of live cellular base station signals fewer than the group of cellular base stations in the fielded cellular network. In another aspect, a terrain environment model is applied based on the captured radio signal data.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: July 15, 2014
    Assignee: Spirent Communications, Inc.
    Inventors: Randy L. Oltman, Steven R. Rumsby, Paul Anthony Collins, Ahmed A. Turk, Michael D. Bailey, Joshua Barry Morman, Peng Gao, Wai Kwok Law
  • Pseudorandom noise code acquisition in direct sequence spread spectrum systems
    Patent number: 8300721
    Abstract: A method for receiving spread spectrum signals and for initial code acquisition from the received signals comprises de-spreading the received signals, based on code phase synchronization, to produce a de-spread signal; and performing a modulation detection based on a change of time-domain characteristic of the de-spread signal.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: October 30, 2012
    Assignee: Agilent Technologies, Inc.
    Inventor: Wai Kwok Law
  • Pseudorandom Noise Code Acquisition in Direct Sequence Spread Spectrum Systems
    Publication number: 20080225928
    Abstract: A method for receiving spread spectrum signals and for initial code acquisition from the received signals comprises de-spreading the received signals, based on code phase synchronization, to produce a de-spread signal; and performing a modulation detection based on a change of time-domain characteristic of the de-spread signal.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 18, 2008
    Inventor: Wai Kwok Law