2018 Fiscal Year Final Research Report
Research on system capacity enhancement using network MIMO-OFDM for mobile communications
| Project/Area Number |
16K06369
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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 | Waseda University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | ネットワークMIMO / マルチユーザMIMO-OFDM / マルチパス遅延 / シンボル間干渉 / ガードインターバル |
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| Outline of Final Research Achievements |
This research proposes a new transmission scheme to cope with problems in applying OFDM to network MIMO. Considering that network MIMO-OFDM suffers from degradation in the transmission efficiency in the presence of the difference in the multipath delay among multiple mobile terminals, the guard interval (GI) control scheme allowing some amount of inter-symbol interference (ISI) is proposed, which leads to achieving maximum system capacity. Thanks to the proposed approach, system capacity of wireless broadband networks can be further enhanced.
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| Free Research Field |
無線通信ネットワーク
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| Academic Significance and Societal Importance of the Research Achievements |
提案するネットワークMIMO-OFDMを対象としたガードインターバル長制御法により，ユーザのマルチパス遅延に差異があっても，全ユーザのシステム容量を常に最大化できることから，第5世代移動通信システム（5G）で求められる技術目標の一つである無線ネットワークの高速・大容量化に貢献できる．
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