Patents by Inventor Dong-Lae Lee

Dong-Lae Lee 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).

  • Apparatus and method for controlling dynamic range of weight vectors according to combining methods in a mobile station equipped with multiple antennas in high rate packet data system using code division multiple access scheme
    Patent number: 7746942
    Abstract: Provided is an apparatus and method for controlling a dynamic range of weight vectors according to a combining method to fit an input range of a channel decoder in a mobile station of a high rate packet data system. The apparatus includes a channel estimator for receiving pilot symbol from a base station and calculating channel estimation values of receive paths of each antenna, an autocorrelation matrix calculator for calculating autocorrelation matrix values in every chip duration from the received pilot symbols, a weight vector calculator for calculating weight vectors using the channel estimation values and/or autocorrelation matrix values according to a combining method of the multi-path received signals, a controller for outputting modified weight vectors by fitting an input range of a channel decoder according to the combining method, and a combiner for outputting the combined signal by multiplying descrambled received signals by the modified weight vectors.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: June 29, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Dong-Lae Lee, Jong-Han Lim
  • Apparatus and method for controlling dynamic range of weight vectors according to combining methods in a mobile station equipped with multiple antennas in high rate packet data system using code division multiple access scheme
    Publication number: 20070195900
    Abstract: Provided is an apparatus and method for controlling a dynamic range of weight vectors according to a combining method to fit an input range of a channel decoder in a mobile station of a high rate packet data system. The apparatus includes a channel estimator for receiving pilot symbol from a base station and calculating channel estimation values of receive paths of each antenna, an autocorrelation matrix calculator for calculating autocorrelation matrix values in every chip duration from the received pilot symbols, a weight vector calculator for calculating weight vectors using the channel estimation values and/or autocorrelation matrix values according to a combining method of the multi-path received signals, a controller for outputting modified weight vectors by fitting an input range of a channel decoder according to the combining method, and a combiner for outputting the combined signal by multiplying descrambled received signals by the modified weight vectors.
    Type: Application
    Filed: January 26, 2007
    Publication date: August 23, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Lae Lee, Jong-Han Lim