Patents by Inventor Nulibyul Kim

Nulibyul 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 apparatus of detecting signal based on minimum mean square error in multiple input multiple output system
    Patent number: 8654882
    Abstract: A receiver in a multiple-input multiple-output (MIMO) system is provided. The receiver includes a channel estimator estimating a channel based on a receiving signal, a minimum mean square error (MMSE) based reciprocal log likelihood ratio (R-LLR) calculator connected with the channel estimator and calculating an R-LLR based on the receiving signal and the estimated channel, and a channel decoder connected with the MMSE based R-LLR calculator and decoding the channel and the receiving signal based on the calculated R-LLR, wherein the R-LLR is calculated based on the reciprocity.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: February 18, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hoon Lee, Young Jo Bang, Seungjae Bang, Jung Pil Choi, Youn Ok Park, Jae Kwon Kim, Nulibyul Kim
  • METHOD AND APPARATUS OF DETECTING SIGNAL BASED ON MINIMUM MEAN SQUARE ERROR IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM
    Publication number: 20120269248
    Abstract: A receiver in a multiple-input multiple-output (MIMO) system is provided. The receiver includes a channel estimator estimating a channel based on a receiving signal, a minimum mean square error (MMSE) based reciprocal log likelihood ratio (R-LLR) calculator connected with the channel estimator and calculating an R-LLR based on the receiving signal and the estimated channel, and a channel decoder connected with the MMSE based R-LLR calculator and decoding the channel and the receiving signal based on the calculated R-LLR, wherein the R-LLR is calculated based on the reciprocity.
    Type: Application
    Filed: April 23, 2012
    Publication date: October 25, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hoon LEE, Young Jo Bang, Seungjae Bang, Jung Pil Choi, Youn Ok Park, Jae Kwon Kim, Nulibyul Kim