| Presentation | 2007-01-25 A Simple Power Distribution Scheme for MC-CDMA With Two Dimensional Spreading Wladimir BOCQUET, Kazunori HAYASHI, Hideaki SAKAI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we develop a power distribution scheme for multi-carrier (MC) code division multiple access (CDMA) systems [1]-[2] with two-dimensional spreading for wireless transmission. We propose to allocate power among the active users based on the minimization of a heuristic expression of the bit error rate (BER). Optimization principle consists of minimizing the average BER among all the users in term of channel conditions and user multiplexing. Due to the simplicity of the approximate BER expression, we can obtain a closed form expression of the optimum power to be allocated to the different active user. Simulation results show significant improvement in term of BER performances compared to the equal power distribution for various modulations, and several encoding gains. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Two-dimensional spreading / MC-CDMA / Lagrangian method / global BER optimization |
| Paper # | SIP2006-148,RCS2006-206 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2007/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Radio Communication Systems (RCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Simple Power Distribution Scheme for MC-CDMA With Two Dimensional Spreading |
| Sub Title (in English) | |
| Keyword(1) | Two-dimensional spreading |
| Keyword(2) | MC-CDMA |
| Keyword(3) | Lagrangian method |
| Keyword(4) | global BER optimization |
| 1st Author's Name | Wladimir BOCQUET |
| 1st Author's Affiliation | France Telecom, Tokyo Laboratory() |
| 2nd Author's Name | Kazunori HAYASHI |
| 2nd Author's Affiliation | Department of Systems Science, Graduate School of Informatics, Kyoto University |
| 3rd Author's Name | Hideaki SAKAI |
| 3rd Author's Affiliation | Department of Systems Science, Graduate School of Informatics, Kyoto University |
| Date | 2007-01-25 |
| Paper # | SIP2006-148,RCS2006-206 |
| Volume (vol) | vol.106 |
| Number (no) | 479 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |