Patents by Inventor Myoung-Seog Kim

Myoung-Seog Kim 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).

  • Method and device for optimizing codebook for quantized precoder by using steepest descent algorithm
    Patent number: 7746936
    Abstract: In a method for optimizing a codebook including a quantized channel between a base station transmitter and a portable terminal: a) select the codebook to be optimized; b) a steepest descent algorithm is applied to respective codewords of the codebook selected in a), wherein the codewords are transformed so that a correlation between the codewords is minimized, and a function indicating the correlation between the codewords is differentiated and is multiplied by a predetermined step size and is used for a parameter for generating a new codeword in the steepest descent algorithm; c) it is determined whether the codebook including the codewords transformed in b) is optimized; and d) the codebook is stored when it is determined in c) that the codebook is optimized.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: June 29, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong-Seung Kwon, Young-Seog Song, In-Kyeong Choi, Chung-Yong Lee, Myeong-Cheol Shin, Myoung-Seog Kim, Seung-Joon Lee