Soon S. Kim

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— A search algorithm for stopping sets in a Tanner graph is proposed for designing good low-density parity-check (LDPC) codes. By applying the belief-propagation algorithm with messages containing the information of originated variable nodes and their connected edges, the stopping sets can be detected. Furthermore, a code design method using the algorithm(More)
For the purpose of in-situ plancatry exploration, such as chemical characterization of Martian surface materials by miniature instruments,. we have ,diveloped T-miniature Magnetic Resonanoe Spectrometers (MRS) namely, Nuclear Magnetic Resonanee (NMR) and Ekctron Paramagnetic Resonanee (H'R) spectrometers at JPL. They are; Proton-NMR spectrometer for the(More)
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This paper presents a method to improve the contrast of digital X-ray image using CUDA program on a GPU. The histogram is commonly used to get the statistical distribution of the contrast in image processing. To increase the visibility of the image in real time, we use the histogram stretching function. It is difficult to implement the function on a GPU(More)
and Space Administration (grant # 1248565). We would like to thank Dr. Soon Sam Kim for having given us an opportunity to work on this project and for his continued interest in our research. We would like to thank Dr. Pannirselvam Kanagaratnam of the RSL lab for his kind help. We also acknowledge and thank the students and faculty of RSL and ITTC for their(More)
Linear Discriminant Analysis (LDA) is a well-known technique to improve the discrimination among classes or reduce the dimensionality with minimum loss of discrimination. It is generally used as a part of the front-end of speech recognizer with the classes defined on phone or subphone level. LDA with subphone-level classes (such as tied states or individual(More)
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