| 講演名 | 2015-05-28 Channel Direction Information Probing for Multi-Antenna Cognitive Radio System Fang Yuan(NICT), Gabriel Porto Villardi(NICT), Fumihide Kojima(NICT), Hiroyuki Yano(NICT), |
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| 抄録(和) | This work studies the problem of channel direction information (CDI) probing for cognitive radio systems with multiple antennas. The CDI from the secondary transmitter (ST) to primary receiver (PR) needs to be acquired by the ST for beamforming in the interference mitigation. Due to the lack of explicit cooperation between primary and secondary systems, the CDI has to be acquired by means of probing, which is generally challenging. In this work, we consider the case for the line of sight (LoS) channels, and propose one simple CDI probing scheme by exploiting the hidden primary transmitter (PT) feedback. Specifically, the ST sends two probing signals with directional beamforming towards the PR, and then actively learns the hidden feedback from the PT to acquire the targeted CDI. The proposed scheme is of low complexity and irrespective of channel gains. To show the impact of Non-LoS channels on the proposed scheme, the performance of acquired CDI accuracy is further analyzed under Rician channels. Simulation results show that the proposed scheme works very well for channels with moderate Rician K factor. |
| 抄録(英) | This work studies the problem of channel direction information (CDI) probing for cognitive radio systems with multiple antennas. The CDI from the secondary transmitter (ST) to primary receiver (PR) needs to be acquired by the ST for beamforming in the interference mitigation. Due to the lack of explicit cooperation between primary and secondary systems, the CDI has to be acquired by means of probing, which is generally challenging. In this work, we consider the case for the line of sight (LoS) channels, and propose one simple CDI probing scheme by exploiting the hidden primary transmitter (PT) feedback. Specifically, the ST sends two probing signals with directional beamforming towards the PR, and then actively learns the hidden feedback from the PT to acquire the targeted CDI. The proposed scheme is of low complexity and irrespective of channel gains. To show the impact of Non-LoS channels on the proposed scheme, the performance of acquired CDI accuracy is further analyzed under Rician channels. Simulation results show that the proposed scheme works very well for channels with moderate Rician K factor. |
| キーワード(和) | Cognitive Radio / CDI / Probing / Hidden Feedback |
| キーワード(英) | Cognitive Radio / CDI / Probing / Hidden Feedback |
| 資料番号 | SR2015-7 |
| 発行日 | 2015-05-21 (SR) |
| 研究会情報 | |
| 研究会 | SR |
|---|---|
| 開催期間 | 2015/5/28(から2日開催) |
| 開催地（和） | 明石市立産業交流センター |
| 開催地（英） | Akashi-Sangyou-Koryu-Center |
| テーマ（和） | コグニティブ無線，周波数有効利用（センシング，ホワイトスペース利活用），ソフトウェア無線，一般 |
| テーマ（英） | Cognitive radio, Efficient spectrum utilization, Software defined radio, etc. |
| 委員長氏名（和） | 阪口 啓(阪大) |
| 委員長氏名（英） | Kei Sakaguchi(Osaka Univ.) |
| 副委員長氏名（和） | 藤井 威生(電通大) / 梅林 健太(東京農工大) |
| 副委員長氏名（英） | Takeo Fujii(Univ. of Electro-Comm.) / Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) |
| 幹事氏名（和） | 亀田 卓(東北大) / 田久 修(信州大) |
| 幹事氏名（英） | Suguru Kameda(Tohoku Univ.) / Osamu Takyu(Shinshu Univ.) |
| 幹事補佐氏名（和） | 石津 健太郎(NICT) / 矢野 一人(ATR) / 稲森 真美子(東海大) / 芝 宏礼(NTT) |
| 幹事補佐氏名（英） | Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT) |
| 講演論文情報詳細 | |
| 申込み研究会 | Technical Committee on Smart Radio |
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| 本文の言語 | ENG |
| タイトル（和） | |
| サブタイトル（和） | |
| タイトル（英） | Channel Direction Information Probing for Multi-Antenna Cognitive Radio System |
| サブタイトル（和） | |
| キーワード(1)（和/英） | Cognitive Radio / Cognitive Radio |
| キーワード(2)（和/英） | CDI / CDI |
| キーワード(3)（和/英） | Probing / Probing |
| キーワード(4)（和/英） | Hidden Feedback / Hidden Feedback |
| 第 1 著者 氏名（和/英） | Fang Yuan / Fang Yuan |
| 第 1 著者 所属（和/英） | National Institute of Information and Communications Technology(略称：NICT) National Institute of Information and Communications Technology(略称：NICT) |
| 第 2 著者 氏名（和/英） | Gabriel Porto Villardi / Gabriel Porto Villardi |
| 第 2 著者 所属（和/英） | National Institute of Information and Communications Technology(略称：NICT) National Institute of Information and Communications Technology(略称：NICT) |
| 第 3 著者 氏名（和/英） | Fumihide Kojima / Fumihide Kojima |
| 第 3 著者 所属（和/英） | National Institute of Information and Communications Technology(略称：NICT) National Institute of Information and Communications Technology(略称：NICT) |
| 第 4 著者 氏名（和/英） | Hiroyuki Yano / Hiroyuki Yano |
| 第 4 著者 所属（和/英） | National Institute of Information and Communications Technology(略称：NICT) National Institute of Information and Communications Technology(略称：NICT) |
| 発表年月日 | 2015-05-28 |
| 資料番号 | SR2015-7 |
| 巻番号（vol） | vol.115 |
| 号番号（no） | SR-62 |
| ページ範囲 | pp.39-44(SR), |
| ページ数 | 6 |
| 発行日 | 2015-05-21 (SR) |