| Presentation | 2007-07-27 Study on Propagation Status Monitoring using Software Defined Radio : Application to Cognitive Radio Takashi FUJIMOTO, Kanshiro KASHIKI, Mitsuo NOHARA, Takashi MATSUMURA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Authors have been studying the Cognitive Radio which selects and utilizes the optimum schemes such as the frequency band and modulation method, by appropriately having the knowledge of the encountered radio environments. As one of research activities, we have developed the Software Defined Radio (SDR) equipment which is composed of the multi communication schemes (wireless LAN and WiMAX) onboard the single FPGA platform. Furthermore, as described in this paper, we have tried to manufacture the equipment which has the capability to monitor the amplitude and phase spectra of the propagation path, by using the functionality of the SDR. By using the equipment, we evaluated its performance and depict the results of the propagation monitoring. As for the propagation path, we assume firstly the two-wave model (direct plus reflected waves). The two-wave model is the typical one which represents the LOS (Line Of Sight) model. For LOS model, we obtain the basic performance characteristics for such model and study the numerical evaluation method. The measurement is also carried out for the model of NLOS (Non Line Of Sight). Using these measured data, we will investigate the estimation method of the propagation status. The manufactured equipment has the feature which is easily possible to monitor the characteristics, which would have to use the high performance measurement instrument and highly trained measurement technique, so far. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cognitive radio / Software defined radio / Propagation status monitoring / Power/phase spectra / two-wave model |
| Paper # | SR2007-36 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2007/7/19(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Software Radio(SR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Propagation Status Monitoring using Software Defined Radio : Application to Cognitive Radio |
| Sub Title (in English) | |
| Keyword(1) | Cognitive radio |
| Keyword(2) | Software defined radio |
| Keyword(3) | Propagation status monitoring |
| Keyword(4) | Power/phase spectra |
| Keyword(5) | two-wave model |
| 1st Author's Name | Takashi FUJIMOTO |
| 1st Author's Affiliation | KDDI R&D Laboratories Inc.() |
| 2nd Author's Name | Kanshiro KASHIKI |
| 2nd Author's Affiliation | KDDI R&D Laboratories Inc. |
| 3rd Author's Name | Mitsuo NOHARA |
| 3rd Author's Affiliation | KDDI R&D Laboratories Inc. |
| 4th Author's Name | Takashi MATSUMURA |
| 4th Author's Affiliation | Toyota Info Technology Center, Co., Ltd. |
| Date | 2007-07-27 |
| Paper # | SR2007-36 |
| Volume (vol) | vol.107 |
| Number (no) | 162 |
| Page | pp.pp.- |
| #Pages | 6 |
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