| Presentation | 2020-03-06 [Invited Lecture] Study on Constant-Amplitude OFDM Scheme Yuyuan Chang, Kazuhiko Fukawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Orthogonal frequency-division multiplexing (OFDM) can be considered one of the most effective transmission schemes for digital wireless communications, because OFDM is very robust against multipath channels and inter-symbol interference while dense and orthogonal allocation of the subcarriers can drastically improve the spectral efficiency. However, OFDM suffers from high peak-to-average power ratio (PAPR) due to the use of a large number of subcarriers. To cope with such high PAPR, this report proposes a constant-amplitude OFDM scheme that can achieve PAPR of 0 dB. First, the proposed scheme decomposes an OFDM signal into two constant-amplitude signals, which are transmitted at different timing. On the receiver side, the original OFDM signal is regenerated by combining two received signals that originate from these two constant-amplitude signals, which is equivalent to a received OFDM signal that passes through the wireless channel. As a conventional constant-amplitude OFDM scheme, the constant envelope OFDM (CE-OFDM) scheme transforms the OFDM signal into a phase modulated signal. Computer simulations make a comparison between the proposed and conventional schemes, and demonstrate that the proposed scheme is much superior to CE-OFDM in bit error rate (BER) performance while both the schemes have almost the same out-of-band spectral characteristics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | wireless communication / OFDM / PAPR / constant-amplitude / constant-envelope |
| Paper # | RCS2019-391 |
| Date of Issue | 2020-02-26 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2020/3/4(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Tomoaki Otsuki(Keio Univ.) / Masayuki Ariyoshi(NEC) / Satoshi Denno(Okayama Univ.) |
| Vice Chair | Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Suguru Kameda(Tohoku Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Keiichi Mizutani(Kyoto Univ.) |
| Secretary | Satoshi Suyama(NTT) / Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(ATR) / Suguru Kameda(Univ. of Electro-Comm.) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(Tokyo Inst. of Tech.) / Keiichi Mizutani(Anritsu) |
| Assistant | Kazushi Muraoka(NEC) / Shinsuke Ibi(Doshisha Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) / Kentaro Kobayashi(Nagoya Univ.) / Masaaki Fuse(Anritsu) / Tomoki Murakami(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Lecture] Study on Constant-Amplitude OFDM Scheme |
| Sub Title (in English) | |
| Keyword(1) | wireless communication |
| Keyword(2) | OFDM |
| Keyword(3) | PAPR |
| Keyword(4) | constant-amplitude |
| Keyword(5) | constant-envelope |
| 1st Author's Name | Yuyuan Chang |
| 1st Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech.) |
| 2nd Author's Name | Kazuhiko Fukawa |
| 2nd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech.) |
| Date | 2020-03-06 |
| Paper # | RCS2019-391 |
| Volume (vol) | vol.119 |
| Number (no) | RCS-448 |
| Page | pp.pp.371-371(RCS), |
| #Pages | 1 |
| Date of Issue | 2020-02-26 (RCS) |