| Presentation | 2007-03-09 Simple Antenna Pattern Switching and Interference-induced Multi-hop Transmissions for Cognitive Radio Networks Kentaro NISHIMORI, TARANT Rocco DI, Hiroyuki YOMO, Petar POPOVSKI, Yasushi TAKATORI, Ramjee PRASAD, Shuji KUBOTA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we apply adaptive array antenna to cognitive radio nodes in order to reduce the interference from the primary system. While the adaptive array antenna can create null towards the direction of primary system, the created antenna pattern can result in non-optimized pattern between nodes in the cognitive radio network. In order to solve such a problem, this paper introduces two techniques. The first technique is the interference-induced multi-hop transmission where the multi-hop transmission is utilized when a link in the network suffers from the low transmission quality due to the created antenna pattern. We show that the efficiency by only this technique is few when considering a very small number of nodes in cognitive networks. In order to amend that problem, we introduce a simple antenna pattern switching. With this tecunique, each cognitive radio node is equipped with three antennas and the node tries to select the antenna configuration that results in the best antenna pattern for each link. Our numerical results show the improvements on the achievable rate in the cognitive radio networks by proposed these techniques. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cognitive radio / interference cancellation / adaptive array / multi-hop/Relay / antenna pattern switching |
| Paper # | SR2006-93 |
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| Committee | SR |
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| Conference Date | 2007/3/2(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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) | Simple Antenna Pattern Switching and Interference-induced Multi-hop Transmissions for Cognitive Radio Networks |
| Sub Title (in English) | |
| Keyword(1) | Cognitive radio |
| Keyword(2) | interference cancellation |
| Keyword(3) | adaptive array |
| Keyword(4) | multi-hop/Relay |
| Keyword(5) | antenna pattern switching |
| 1st Author's Name | Kentaro NISHIMORI |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation() |
| 2nd Author's Name | TARANT Rocco DI |
| 2nd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 3rd Author's Name | Hiroyuki YOMO |
| 3rd Author's Affiliation | Center for TeleInFrastructure (CTIF), Aalborg University |
| 4th Author's Name | Petar POPOVSKI |
| 4th Author's Affiliation | Center for TeleInFrastructure (CTIF), Aalborg University |
| 5th Author's Name | Yasushi TAKATORI |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 6th Author's Name | Ramjee PRASAD |
| 6th Author's Affiliation | Center for TeleInFrastructure (CTIF), Aalborg University |
| 7th Author's Name | Shuji KUBOTA |
| 7th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2007-03-09 |
| Paper # | SR2006-93 |
| Volume (vol) | vol.106 |
| Number (no) | 558 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |