| Presentation | 2015-05-28 Channel Direction Information Probing for Multi-Antenna Cognitive Radio System Fang Yuan, Gabriel Porto Villardi, Fumihide Kojima, Hiroyuki Yano, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | 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. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cognitive Radio / CDI / Probing / Hidden Feedback |
| Paper # | SR2015-7 |
| Date of Issue | 2015-05-21 (SR) |
| Conference Information | |
| Committee | SR |
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| Conference Date | 2015/5/28(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Akashi-Sangyou-Koryu-Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Cognitive radio, Efficient spectrum utilization, Software defined radio, etc. |
| Chair | Kei Sakaguchi(Osaka Univ.) |
| Vice Chair | Takeo Fujii(Univ. of Electro-Comm.) / Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) |
| Secretary | Takeo Fujii(Tohoku Univ.) / Kenta Umebayashi(Shinshu Univ.) |
| Assistant | Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Smart Radio |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Channel Direction Information Probing for Multi-Antenna Cognitive Radio System |
| Sub Title (in English) | |
| Keyword(1) | Cognitive Radio |
| Keyword(2) | CDI |
| Keyword(3) | Probing |
| Keyword(4) | Hidden Feedback |
| 1st Author's Name | Fang Yuan |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Gabriel Porto Villardi |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 3rd Author's Name | Fumihide Kojima |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 4th Author's Name | Hiroyuki Yano |
| 4th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2015-05-28 |
| Paper # | SR2015-7 |
| Volume (vol) | vol.115 |
| Number (no) | SR-62 |
| Page | pp.pp.39-44(SR), |
| #Pages | 6 |
| Date of Issue | 2015-05-21 (SR) |