| Presentation | 2004-08-27 A Study on Multi Rate MC-CDMA Adaptive Modulation Scheme Junichi SATO, Yoshinobu KAJIKAWA, Yasuo NOMURA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | MC-CDMA adaptive modulation scheme has been studied as a mobile communication system that realizes a high quality and high speed transmission. Moreover, the multimedia service has been developed in the next generation mobile communications as the video is transmitted in real time in addition to the voice service. Ever higher speed transmission and efficient use of frequency are demanded to realize these multimedia communi- cations. Therefore this paper proposes a MC-CDMA adaptive modulation scheme with selects modulation scheme and spreading factor according to the transmission channel environment as a system that realizes ever higher speed transmission. In the conventional MC-CDMA adaptive modulation schemes, the received power is different in each subcarrier because the arrangement of subcarriers is sensitive to the frequency selective fading, therefore high speed transmission cannot be realized. On the other hand, the proposed scheme can improve the transmission efficiency compared with the conventional scheme because the number of data symbols transmitted at a time by the same frequency is increased. Simulation results demonstrate that the proposed scheme can improve the transmission efficiency without deteriorating the BER performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MC-CDMA / Adaptive Modulation / Frequency Selective Fading / Channel Estimation |
| Paper # | RCS2004-139 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2004/8/20(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 | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Multi Rate MC-CDMA Adaptive Modulation Scheme |
| Sub Title (in English) | |
| Keyword(1) | MC-CDMA |
| Keyword(2) | Adaptive Modulation |
| Keyword(3) | Frequency Selective Fading |
| Keyword(4) | Channel Estimation |
| 1st Author's Name | Junichi SATO |
| 1st Author's Affiliation | Department of Electronics, Faculty of Engineering, Kansai University() |
| 2nd Author's Name | Yoshinobu KAJIKAWA |
| 2nd Author's Affiliation | Department of Electronics, Faculty of Engineering, Kansai University |
| 3rd Author's Name | Yasuo NOMURA |
| 3rd Author's Affiliation | Department of Electronics, Faculty of Engineering, Kansai University |
| Date | 2004-08-27 |
| Paper # | RCS2004-139 |
| Volume (vol) | vol.104 |
| Number (no) | 258 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |