Jeonghwan Lee

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Credit scheduler, an original Xen virtual machine scheduler, uses a boost mechanism to improve responsiveness. However, the original boost mechanism is applied only to inactive virtual machines. Because of this, if virtual machine scheduling delay time increases, the I/O performance of an active virtual machine dramatically decreases. However, when the(More)
In recent times, with the advancing of the graphics processing unit (GPU), parallel computing using general-purpose computing on GPU (GPGPU) is expanding. This is achieved through a processing speed faster than those of traditional computing environments across many fields, such as science, medicine, engineering, and analysis. However, there are many(More)
In this paper, we propose a Double-Space Time Transmit Diversity (D-STTD) communication system with Adaptive Modulation and Coding (AMC) scheme and analyze its performance using simulation experiments. The simulation results show that the probability of selecting a high Modulation and Coding Scheme (MCS) level increased as the Signal to Noise Ratio (SNR)(More)
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