| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
WHO define affect of electricmagnetic fields to human body as 3b(out of 5) in 2011. So we must find out more safety media for near field communication. In this study, we have shown the possiblities of usage of ultrasonic communication for indoor applications and shown experimental equations for propagations and transmission rate. We conducted experiments changing symbol rates. The media is air and steel. The experimental distances are 30cm, 60cm, 120cm and 240cm. When symbol rate range is 200k-1000ksps in air, the change of EVM can be seen clearly by experimental distance and symbol rate. And then because the change of EVM in the experimental distance of30cm and 60cm is not large in symbol rate range of
200k-1000ksps, the formula is found in the experimental distance
of 120cm and 240cm.
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