| Project/Area Number |
26420375
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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 | Tokyo University of Technology |
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Principal Investigator |
UEDA Hiromi 東京工科大学, コンピュータサイエンス学部, 教授 (80367200)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 光アクセスネットワーク / PON / QAM / クリップ / サブキャリア / OSAN / SDM-PON / バイアス送信方式 / クリップ送信方式 / 光バースト受信部 / 伝達関数 / LCR回路 / OLT / ONU / OFDM / ディジタル変調 / 光バースト受信 / バースト受信 |
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| Outline of Final Research Achievements |
To economically provide higher bit rate services to users, the researcher proposed the Subcarrier Digital Modulation Passive Optical Network (SDM-PON). To show the feasibility of the SDM-PON system, it is required to verify up to 32 ONUs can transmit 1 Gbps to OLT simultaneously and continuously. Using wavelengths of 1310 band with the interval of 200 GHz, subcarrier frequencies of starting 1.2 GHz with interval of 0.8 GHz, 16 QAM as a digital modulation, and ONU’s uniform average sending powers of 4dBm he verified the transmission. For ONU’s uniform average sending powers of 6dBm more tolerable transmission was achieved. In addition, he showed it is effective in the ONU’s sending power to give the ONU of the maximum distance 4 dBm, and the other ONUs the powers that decrease in accordance with the distance.
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