| Presentation | 2009-10-23 Study of Optimal Relay Position of Bi-directional Cooperative Relaying under Asymmetric Traffic Conditions Takaaki SAEKI, Koji YAMAMOTO, Hidekazu MURATA, Susumu YOSHIDA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Cooperative relaying (CR) is a promising technique to provide spatial diversity by combining multiple signals from source and relay stations. In the present paper, the impact of the asymmetric property on the optimal relay position in bi-directional CR under asymmetric traffic conditions are discussed assuming that CR involves one communication pair and one relay station in a time division duplex (TDD) system. As a result of the asymmetric property, the average communication quality differs for each transmission direction because of the difference in signal power between the combined signals for each direction. In order to evaluate the impact of the asymmetric property, the optimal relay position and resource allocation are compared to those in simple multi-hop relaying, which does not have the asymmetric property. Numerical results show that, in order to maximize the overall quality of bi-directional communication, the optimal relay position in CR depends on the offered traffic ratio, while the offered traffic ratio does not affect the optimal relay position in multi-hop relaying. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cooperative relaying / asymmetric traffic / optimal relay position / decode-and-forward / spectral efficiency |
| Paper # | SR2009-60,AN2009-30,USN2009-33 |
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| Conference Information | |
| Committee | USN |
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| Conference Date | 2009/10/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ubiquitous and Sensor Networks(USN) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study of Optimal Relay Position of Bi-directional Cooperative Relaying under Asymmetric Traffic Conditions |
| Sub Title (in English) | |
| Keyword(1) | Cooperative relaying |
| Keyword(2) | asymmetric traffic |
| Keyword(3) | optimal relay position |
| Keyword(4) | decode-and-forward |
| Keyword(5) | spectral efficiency |
| 1st Author's Name | Takaaki SAEKI |
| 1st Author's Affiliation | Graduate School of Informatics, Kyoto University() |
| 2nd Author's Name | Koji YAMAMOTO |
| 2nd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 3rd Author's Name | Hidekazu MURATA |
| 3rd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 4th Author's Name | Susumu YOSHIDA |
| 4th Author's Affiliation | Graduate School of Informatics, Kyoto University |
| Date | 2009-10-23 |
| Paper # | SR2009-60,AN2009-30,USN2009-33 |
| Volume (vol) | vol.109 |
| Number (no) | 248 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |