2014 Fiscal Year Final Research Report
Self-interference cancellation with virtual coupling wave paths and its applications
| Project/Area Number |
24560457
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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 | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 自己干渉波 / 適応フィルタ / アレー信号処理 / 無線パケット衝突検出 / 全二重通信 / 無線中継局 |
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| Outline of Final Research Achievements |
A received signal of a wireless communications terminal using a single frequency for receiving and transmitting signals is significantly deteriorated due to the coupling wave coming from the transmit antenna of the same terminal. Such a coupling wave is called self-intereference and is considered to be difficult to cancel due to its huge received power compared as that of the desired signal. In this study, we have established a self-inteference canceling method using adaptive filter, antenna array and polarized antennas, where the weights are optimized taking the difference of the quantization errors among the antenna elements into consideration, which could be beneficial for the realization of the wireless packet collision detection, the single frequency full duplex bi-directional communication, and the single frequency full duplex wireless relay station.
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| Free Research Field |
工学
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