| Project/Area Number |
26420377
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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 | Nanzan University |
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Principal Investigator |
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| Research Collaborator |
KATO Maki
OOWAKI Kohei
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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 |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 光アクセス / PON / コンスタレーション共有 / 光アクセス網 / ディジタルソフトウェアPON / signal shaping |
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| Outline of Final Research Achievements |
This work proposes a novel symbol mapping that uses signal shaping to alleviate the BER problem in constellation sharing with the use of phase information. This mapping solves one of the most critical problems; the small Euclid distance of the PSK symbols in the constellation sharing of OOK and PSK in passive optical networks (PONs). The modulation format of ASK, PSK, and QAM can co-exist with the existing PONs, which utilize on-off keying (OOK). The proposed mapping is designed to maximize the symbol distance assuming the co-existence of OOK and PSK. Constellation sharing enables next generation PONs to overlay existing PONs with the use of an advanced modulation format based on the Digital Signal Processing (DSP) technology that well supports migration of the access network. The modulation format of ASK, PSK, and QAM can co-exist with the existing PONs, which utilize OOK. This work shows the operating principles of symbol mapping, and also describes the improvement of BER.
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