| Presentation | 2020-05-21 A Study on Non-Orthogonal Pilot Design for Grant-Free Multi-User Massive MIMO Takanori Hara, Koji Ishibashi, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To accommodate a large number of users with low latency, grant-free access has gained much attention. As one of the conventional schemes, unsourced random access (URA), which all users transmit utilizing the sequence selected from a common set of non-orthogonal sequences, has been proposed. The asymptotic success probabilities of URA employing a massive MIMO were derived for both cases of complex Gaussian sequences and Zadoff-Chu (ZC) sequences, and it was hence shown that the URA exploiting ZC sequences outperforms. Although there exist other sequences which may provide the superior interference suppression performance to ZC ones, the success probabilities of URA utilizing them have not been investigated yet. In this paper, we study the probabilities for the two sequences, which are the one is based on a discrete Fourier transform matrix, and another is designed Frame-theoretically to suppress interference, and show their advantageous regions via computer simulations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Grant-free access / massive MIMO / non-orthogonal pilot |
| Paper # | RCS2020-22 |
| Date of Issue | 2020-05-14 (RCS) |
| Conference Information | |
| Committee | IN / RCS |
|---|---|
| Conference Date | 2020/5/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Keio University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ad-Hoc/Sensor Networks/MANET, Mobile Networks, M2M/IoT Communications, Wi-Fi, IEEE802.15(ZigBee) and others |
| Chair | Takuji Kishida(NTT-AT) / Tomoaki Otsuki(Keio Univ.) |
| Vice Chair | Kenji Ishida(Hiroshima City Univ.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) |
| Secretary | Kenji Ishida(NTT Communications) / Satoshi Suyama(NTT) / Fumiaki Maehara(Hiroshima City Univ.) / Toshihiko Nishimura(KDDI Research) |
| Assistant | / Kazushi Muraoka(NEC) / Shinsuke Ibi(Doshisha Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Information Networks / Technical Committee on Radio Communication Systems |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Non-Orthogonal Pilot Design for Grant-Free Multi-User Massive MIMO |
| Sub Title (in English) | |
| Keyword(1) | Grant-free access |
| Keyword(2) | massive MIMO |
| Keyword(3) | non-orthogonal pilot |
| 1st Author's Name | Takanori Hara |
| 1st Author's Affiliation | The University of Electro-Communications(The Univ. of Electro-Communications) |
| 2nd Author's Name | Koji Ishibashi |
| 2nd Author's Affiliation | The University of Electro-Communications(The Univ. of Electro-Communications) |
| Date | 2020-05-21 |
| Paper # | RCS2020-22 |
| Volume (vol) | vol.120 |
| Number (no) | RCS-29 |
| Page | pp.pp.67-72(RCS), |
| #Pages | 6 |
| Date of Issue | 2020-05-14 (RCS) |