Patents by Inventor Seung Sik Eum

Seung Sik Eum 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 reducing peak to average power ratio through recombination of orthogonal frequency division multiplexing symbol
    Patent number: 8675750
    Abstract: There are provided an apparatus and a method for reducing a peak to average power ratio (PAPR) through the recombination of an orthogonal frequency division multiplexing (OFDM) symbol. The apparatus includes an orthogonal frequency division multiplexing (OFDM) symbol transforming unit, a peak power measuring unit, and an OFDM symbol selecting unit, wherein the OFDM symbol transforming unit generates the plurality of OFDM symbols by (a) performing a process of rotating the OFDM symbol by a predetermined angle in a complex plane and performing cyclical shifting with respect to the rotated OFDM symbol and (b) repetitively performing process (a) with respect to the cyclically shifted OFDM symbol. Therefore, diversity is secured, whereby the PAPR may be reduced.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: March 18, 2014
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Joun Sup Park, Chul Gyun Park, Young Chai Ko, Seung Sik Eum
  • APPARATUS AND METHOD FOR REDUCING PEAK TO AVERAGE POWER RATIO THROUGH RECOMBINATION OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYMBOL
    Publication number: 20120201314
    Abstract: There are provided an apparatus and a method for reducing a peak to average power ratio (PAPR) through the recombination of an orthogonal frequency division multiplexing (OFDM) symbol.
    Type: Application
    Filed: June 21, 2011
    Publication date: August 9, 2012
    Inventors: Joun Sup PARK, Chul Gyun Park, Young Chai Ko, Seung Sik Eum