| Presentation | 2018-10-18 [Invited Lecture] Phase Rotated Non-Orthogonal Multiple Access Yuyuan Chang, Kazuhiko Fukawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As a multiple access technique candidate of 5G, non-orthogonal multiple access (NOMA) has attracted much attention for its high spectral efficiency. On its receiver side, successive interference cancellation (SIC) cancels the dominant interference and detects the desired signal. When a transmit power level allocated to one user is roughly equal to those allocated to other users, however, the bit error rate (BER) performance degrades severely. To alleviate such a problem, this report proposes a novel NOMA scheme with phase rotation, and analyzes the optimum angle of the phase rotation in the case of two modulation schemes. Even when multiuser detection (MUD) that simultaneously detects both desired and interfering signals is employed, the BER performance still degrades due to low minimum distance between the superposed constellation points. To improve the BER performance, this report also proposes a joint MUD and SIC scheme that exploits the advantages of both MUD and SIC. Computer simulations over additive white Gaussian noise (AWGN) and Rayleigh fading channels demonstrate that the joint MUD and SIC scheme with the phase rotation outperforms other detection schemes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | NOMA / phase rotation / multiuser detection / successive interference cancellation |
| Paper # | RCS2018-157 |
| Date of Issue | 2018-10-11 (RCS) |
| Conference Information | |
| Committee | RCS |
|---|---|
| Conference Date | 2018/10/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, Future Wireless Systems, etc. |
| Chair | Tomoaki Otsuki(Keio Univ.) |
| Vice Chair | Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) |
| Secretary | Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara |
| Assistant | Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems |
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| Language | ENG-JTITLE |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Lecture] Phase Rotated Non-Orthogonal Multiple Access |
| Sub Title (in English) | |
| Keyword(1) | NOMA |
| Keyword(2) | phase rotation |
| Keyword(3) | multiuser detection |
| Keyword(4) | successive interference cancellation |
| 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 | 2018-10-18 |
| Paper # | RCS2018-157 |
| Volume (vol) | vol.118 |
| Number (no) | RCS-254 |
| Page | pp.pp.39-44(RCS), |
| #Pages | 6 |
| Date of Issue | 2018-10-11 (RCS) |