Kazuto Usuda

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The pre-Rake scheme for pulse based ultrawideband (UWB) communications system is proposed in a standardized UWB channel model from IEEE 802.15 SG3a, which is based on an extensive set of indoor short-range channel measurements in this paper. The pre-Rake scheme is shown to contribute to the low-power, cost-effective UWB system designing as well as Rake(More)
MOSFETs with a high mobility channel are currently stirring a strong interest as advanced CMOS device structures, which can relax several physical limitations associated with device scaling. From this viewpoint, MOSFETs with strained-Si/relaxed SiGe structures are promising for high performance/low power CMOS applications, because of the high electron and(More)
  • K Usuda
  • Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta…
  • 1997
The purpose of this study was to observe and evaluate mucosal coating by barium mixtures using electron microscopy. Specimens from the ileum of two pigs, about 50cm in length from the terminal ileum, were divided into 3 groups with different in concentrations and additives of barium mixture. The 50cm length of ileum was cut into 10cm long pieces. Four(More)
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