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Hiroshima City Children Tracking System is a safety support system for children based on ad hoc network technologies. Field experiments have been conducted in cooperation with an elementary school in Hiroshima. In this paper, we propose a new generation children tracking system which is based on experiences and findings of the field experiments for Hiroshima City Children Tracking System. Our proposed...
We have been developing "information delivery and display system for deaf people in time of disaster (IDDD)" using both mobile network and ad hoc network of Bluetooth. In IDDD, a mobile phone receives disaster information by SMS, then the received information is automatically transferred and displayed on a big screen with flashing light to inform emergency. So that, deaf people, disabled...
To achieve good throughput performance and small delay, HSDPA are introduced in WCDMA systems. One of the key features of HSDPA is adaptive modulation and coding (AMC), which involves adaptively changing the transport format according to the condition of the receiver. To decide the transport format, the mobile station should measure SIR and send CQI (channel quality indicator) based on the SIR value...
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