| Presentation | 2013-05-24 Study on Spatial Spectrum Sharing With Imperfect Channel State Information Samuli TIIRO, Kenta UMEBAYASHI, Yasuo SUZUKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Cognitive radio (CR) systems aim for more efficient spectrum utilization by having so called secondary users (SUs) transmit on a frequency band reserved for licensed primary users (PUs). The secondary transmissions are allowed provided that no harmful interference will be caused to the PUs. SU terminals with multiple antennas can employ transmit power control combined with transmit precoding in order to control the interference levels. In most of the existing works, perfect channel state information (CSI) is assumed to be available for the SUs. However, in practical systems where perfect CSI is not available, the SUs are not able to guarantee that the interference constraints are satisfied. In this paper, we investigate the problem of spectrum sharing for multiantenna CR systems with estimated CSI. Due to the random nature of the estimation error, we set a probabilistic interference constraint and, in order to satisfy it, provide analysis for the interference power statistics. In addition, we present a power control framework for the SU to meet the probabalistic interference constraint. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | cognitive radio / MIMO / spectrum sharing / channel estimation / interference cancellation / power control |
| Paper # | SR2013-9 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2013/5/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Software Radio(SR) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Spatial Spectrum Sharing With Imperfect Channel State Information |
| Sub Title (in English) | |
| Keyword(1) | cognitive radio |
| Keyword(2) | MIMO |
| Keyword(3) | spectrum sharing |
| Keyword(4) | channel estimation |
| Keyword(5) | interference cancellation |
| Keyword(6) | power control |
| 1st Author's Name | Samuli TIIRO |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology() |
| 2nd Author's Name | Kenta UMEBAYASHI |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology |
| 3rd Author's Name | Yasuo SUZUKI |
| 3rd Author's Affiliation | Tokyo University of Agriculture and Technology |
| Date | 2013-05-24 |
| Paper # | SR2013-9 |
| Volume (vol) | vol.113 |
| Number (no) | 57 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |