Kouji Ohuchi

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Sensor networks have attracted enormous attention in recent years. These networks can form a multiroute multihop structure by the signal relaying via multiple sensor nodes. When the signals are transmitted over multiple routes, route diversity effect becomes possible. This effect can help in preventing performance degradation caused by the quality loss of(More)
As scaling down MOSFET devices degrade device performance in term of leakage current and short channel effects. To overcome the problem a newer device Silicon-on-Insulator (SOI) MOSFET has been introduced. The Fully Depleted (FD) SOI MOSFETs also suffer from short channel effects (SCE) in the sub 65 nm regime due to reduction in threshold voltage. Several(More)
In this paper, we develop the conventional Asymmetrically Clipped Optical OFDM (ACO-OFDM) to propose a new OFDM for optical wireless communication with Intensity Modulation / Direct Detection (IM/DD). Although the conventional ACO-OFDM multiplexes only odd subcarriers, we reveal that some even subcarriers do not interfere with odd ones even if we clip their(More)