• Title/Summary/Keyword: computer center

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Analysis of Current Characteristics Determined by Doping Profiles in 3-Dimensional Devices (3차원 구조 소자에서의 doping profile에 따른 전류 특성 분석)

  • Cho, Seong-Jae;Yun, Jang-Gn;Park, Il-Han;Lee, Jung-Hoon;Kim, Doo-Hyun;Lee, Gil-Seong;Lee, Jong-Duk;Park, Byung-Gook
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.475-476
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    • 2006

  • Recently, the demand for high density MOSFET arrays are increasing. In implementing 3-D devices to this end, it is inevitable to ion-implant vertically in order to avoid screening effects caused by high silicon fins. In this study, the dependency of drain current characteristics on doping profiles is investigated by 3-D numerical analysis. The position of concentration peak (PCP) and the doping gradient are varied to look into the effects on primary current characteristics. Through these analyses, criteria of ion-implantation for 3-D devices are established.

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Power Control with Nearest Neighbor Nodes Distribution for Coexisting Wireless Body Area Network Based on Stochastic Geometry

  • Liu, Ruixia;Wang, Yinglong;Shu, Minglei;Zhao, Huiqi;Chen, Changfang
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.11
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    • pp.5218-5233
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    • 2018

  • The coexisting wireless body area networks (WBAN) is a very challenging issue because of strong inter-networks interference, which seriously affects energy consumption and spectrum utilization ratio. In this paper, we study a power control strategy with nearest neighbor nodes distribution for coexisting WBAN based on stochastic geometry. Using homogeneous Poisson point processes (PPP) model, the relationship between the transmission power and the networks distribution is analytically derived to reduce interference to other devices. The goal of this paper is to increase the transmission success probability and throughput through power control strategy. In addition, we evaluate the area spectral efficiency simultaneously active WBAN in the same channel. Finally, extensive simulations are conducted to evaluate the power control algorithm.

  • https://doi.org/10.3837/tiis.2018.11.003 인용 PDF KSCI

DESIGN AND IMPLEMENTATION OF ON-BOARD COMPUTERS FOR STSAT-2

  • Ryu Changwan;Choi Myungjin;Oh Daesoo;Kang Kyungin;Nam Myeong-Ryong;Keum Junghoon
    • Bulletin of the Korean Space Science Society
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    • 2004.10b
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    • pp.293-295
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    • 2004

  • The Engineering Model of on-board computer was developed and tested completely with other sub-systems for STSAT-2. We designed the on-board computer of STSAT-2 which has some improved features compared with that of STSAT-l. A remarkable change is that the on-board computer has a structure of centeralized network communication without a Network Controller of the STSAT-l. That is, the on-board computer directly manages a satellite network. In addition, as many logics are implemented by Field Programmable Gate Array, so we can reduce the weight and size of on-board computer. Also, the developed on-board computer has more improved tolerance against Single Event Upsets and faults than that of the STSAT-l.

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