| Presentation | 2004-08-27 Study on Multipling OFDM Gen-ichiro Ohtar, Mitsuru Uesugi, Teruo Sato, Hideyoshi Tominaga, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The present paper proposes a new multi-OFDM modulation/demodulation method, and proves its orthogonality between different rate OFDM layers. The proposed method multiplexes the OFDM signals of varying rates on the same band. The present method has a possibility of achieving maximum 4 bit/s/Hz, which means the spectral efficiency is higher than 2bit/s/Hz of the conventioanl OFDM. This result comes from the spectral orthogonality of OFDM itself and the orthogonality of Nyquist's vestigal symmetry theorem. A simulation in an AWGN environment, shows that the proposed method has better BER (Bit to Error Rate) performance than QPSK in the range of high noise existence. In a fading environment, multi-OFDM implements the same BER performance as QPSK. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | spectral efficiency / OFDM / Nyquist vestigal symmetry method / orthogonal modulation system / Nyquist transmission / wideband |
| Paper # | RCS2004-136 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2004/8/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Chair | |
| Vice Chair | |
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| Paper Information | |
| 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) | Study on Multipling OFDM |
| Sub Title (in English) | |
| Keyword(1) | spectral efficiency |
| Keyword(2) | OFDM |
| Keyword(3) | Nyquist vestigal symmetry method |
| Keyword(4) | orthogonal modulation system |
| Keyword(5) | Nyquist transmission |
| Keyword(6) | wideband |
| 1st Author's Name | Gen-ichiro Ohtar |
| 1st Author's Affiliation | Corporate Engineering Division, Panasonic Mobile Communications Co., Ltd.() |
| 2nd Author's Name | Mitsuru Uesugi |
| 2nd Author's Affiliation | Corporate Engineering Division, Panasonic Mobile Communications Co., Ltd. |
| 3rd Author's Name | Teruo Sato |
| 3rd Author's Affiliation | Graduate School of Global Information and Telecommunication Center, Waseda University |
| 4th Author's Name | Hideyoshi Tominaga |
| 4th Author's Affiliation | Graduate School of Global Information and Telecommunication Center, Waseda University |
| Date | 2004-08-27 |
| Paper # | RCS2004-136 |
| Volume (vol) | vol.104 |
| Number (no) | 258 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |