| Presentation | 2010-01-22 On the Coexistence of Cognitive Radio Systems Chen SUN, ALEMSEGED Yohannes D., HaNguyen TRAN, Hiroshi HARADA, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we study the coexistence issue of cognitive radio system (CRS) including selfcoexistence among secondary users (SUs) and the coexistence between primay users (PUs) and SUs. The selfcoexistence addresses the sharing of identified spectrum opportunity among SUs. The coexistence between SUs and PUs addresses the interference from SUs to PUs. To parameterize these issues, we first introduce a new parameter named as quality of coexistence (QoC), which is defined as the quality of SU transmission devided by the negative interference to PUs. Assuming the a time slot of spectrum opportunity has been found by multiple SUs, we partition this time slot to multiple SUs to maximize the QoC. This leads to a good spectrum usage among SUs and minimized interference to PUs. It is assumed that the SUs have multiple antennas and employ transmit power control (TPC). Numerical study shows that using the proposed method, the spectrum opportunity can be shared among multiple SUs while giving the minimum interference to the primary users (PUs). Results show that by properly allocation time slots to multiple SUs to share the spectrum opportunity, the QoC facotor can be increased by more than 20% which indicates a significant improvement of coexistence not only between SUs and PUs but also among SUs. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cognitive radio system (CRS) / coexistence / quality of coexistence (QoC) / transmit power control (TPC) / Rayleigh fading |
| Paper # | SR2009-87 |
| Date of Issue |
| Conference Information | |
| Committee | SR |
|---|---|
| Conference Date | 2010/1/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Software Radio(SR) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On the Coexistence of Cognitive Radio Systems |
| Sub Title (in English) | |
| Keyword(1) | Cognitive radio system (CRS) |
| Keyword(2) | coexistence |
| Keyword(3) | quality of coexistence (QoC) |
| Keyword(4) | transmit power control (TPC) |
| Keyword(5) | Rayleigh fading |
| 1st Author's Name | Chen SUN |
| 1st Author's Affiliation | New Generation Wireless Communications Research Center National Institute of Information and Communications Technology (NICT)() |
| 2nd Author's Name | ALEMSEGED Yohannes D. |
| 2nd Author's Affiliation | New Generation Wireless Communications Research Center National Institute of Information and Communications Technology (NICT) |
| 3rd Author's Name | HaNguyen TRAN |
| 3rd Author's Affiliation | New Generation Wireless Communications Research Center National Institute of Information and Communications Technology (NICT) |
| 4th Author's Name | Hiroshi HARADA |
| 4th Author's Affiliation | New Generation Wireless Communications Research Center National Institute of Information and Communications Technology (NICT) |
| Date | 2010-01-22 |
| Paper # | SR2009-87 |
| Volume (vol) | vol.109 |
| Number (no) | 383 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |