| Presentation | 2007-03-09 Interference Exploitation for Cognitive Radios Kentaro NISHIMORI, Hiroyuki YOMO, Petar POPOVSKI, Yasushi TAKATORI, Ramjee PRASAD, Shuji KUBOTA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For cognitive radios operating in a frequency band owned by a legacy wireless communication system (often called primary system), the interference from the primary system has been considered as a major disturbance that limits the opportunity to reuse the primary frequency band. However, considering that the primary system is a legacy system whose transmission parameters can be known to the newly deployed cognitive radios, the interference from the primary system should not be always treated as a Gaussian-like noise. Following such an observation, in this paper, we advocate to exploit the primary signal for realizing efficient communication among cognitive radios. instead of solely regarding it just as a disturbance. Assuming a time division duplexing (TDD)-based primary system, we show two examples of the intereference exploitation: (1) exploitation in medium access control (MAC) layer to realize a distrubuted medium access for collocated CR networks (exploitation in time domain), and (2) exploitation in physical (PHY) layer where the interference from/to the primary system is cancelled/ mitigated by using adaptive array antenna (exploitation in spatial domain). We show that such an interference exploitation cab help cognitive radios to effeciently reuse the primary spectrum in space and time. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Dynamic Spectrum Access / Cognitive Radio / Medium Access Control / Interference Cancellation / Adaptive Array Antenna |
| Paper # | SR2006-94 |
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| Committee | SR |
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| Conference Date | 2007/3/2(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Interference Exploitation for Cognitive Radios |
| Sub Title (in English) | |
| Keyword(1) | Dynamic Spectrum Access |
| Keyword(2) | Cognitive Radio |
| Keyword(3) | Medium Access Control |
| Keyword(4) | Interference Cancellation |
| Keyword(5) | Adaptive Array Antenna |
| 1st Author's Name | Kentaro NISHIMORI |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation() |
| 2nd Author's Name | Hiroyuki YOMO |
| 2nd Author's Affiliation | Center for TeleInFrastructure (CTIF), Aaborg University |
| 3rd Author's Name | Petar POPOVSKI |
| 3rd Author's Affiliation | Center for TeleInFrastructure (CTIF), Aaborg University |
| 4th Author's Name | Yasushi TAKATORI |
| 4th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 5th Author's Name | Ramjee PRASAD |
| 5th Author's Affiliation | Center for TeleInFrastructure (CTIF), Aaborg University |
| 6th Author's Name | Shuji KUBOTA |
| 6th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2007-03-09 |
| Paper # | SR2006-94 |
| Volume (vol) | vol.106 |
| Number (no) | 558 |
| Page | pp.pp.- |
| #Pages | 8 |
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