| Project/Area Number |
23560480
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Nagaoka National College of Technology |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | スペクトル拡散通信方式 / 直接拡散方式 / 符号分割多元接続 / ダイバーシチ方式 / 符号ダイバーシチ / 拡散系列 / ２値系列 / 他局間干渉抑圧 |
|---|
| Research Abstract |
In this report, a novel code-diversity method in DS/CDMA communication system is proposed and presented its evaluations. The characteristics of proposed digital-digital (DD) code sequence, methods of producing, and the effects are described. Practically, hardware of the transmitter and receiver are made and the realization is confirmed. The application against near-far problem of indoor environment is shown by measurement of strength of radio wave propagation. Additionally, a novel interference suppression method using reverse discrete Fourier Transform is proposed and shown the effect.
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