| Project/Area Number |
23700125
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Media informatics/Database
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| Research Institution | Institute of Systems, Information Technologies and Nanotechnologies (2014)
The University of Kitakyushu (2011-2013) |
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Principal Investigator |
MITSUDO Yuichi 公益財団法人九州先端科学技術研究所, その他部局等, 研究員 (70404803)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 光空間通信 / 実世界環境 / 変調方法 / 通信方法 / 光学 / 光線追跡法 / モンテカルロ光線追跡法 / 国際情報交換 / ユビキタスコンピューティング / タグシステム |
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| Outline of Final Research Achievements |
In this research, I present a modulation and de-modulation method, which generates rectangular reading-out area. This research is consists of two parts: optical system and modulation system. In the first part, I present a structure, which enables the receiver to detect the desired signal, only when receiver points this rectangular area, partitioned by desired transmitters. In the next part, I present a modulation method, which avoid the influence of undesired signals, which survive the undesired signal reduction of the optical systems. To terminate the influence of undesired signals, I focused a cross-correlation of desired signals and undesired signal. A random phase shift modulation is used to lower the cross-correlation of the desired and undesired signals. It is shown that the combination of optical system and the random phase shift gives a BER improvement. The accuracy of the proposed method is investigated experimentally through computer simulations.
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