| Presentation | 2021-11-26 [Poster Presentation] Performance of Least-squares Channel Estimation for Large-scale MU-MIMO-OFDM in the Presence of Terminal Mobility Yutaka Itoya, Shuhei Saito, Hirofumi Suganuma, Hiromichi Tomeba, Takashi Onodera, Fumiaki Maehara, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report investigates the effect of multiplexing-based least squares (LS) channel estimation on uplink large-scale MU-MIMO-OFDM in the presence of terminal mobility. In uplink large-scale MU-MIMO, the same number of pilot symbols as that of mobile stations (MSs) is generally required, which results in the consumption of a substantial amount of resources for channel estimation. This overhead can be reduced by using the LS channel estimation in user multiplexing because this method has only to use a limited number of subcarriers, with a multipath length at most. In addition, the achieved overhead reductions can be effectively utilized for improving the tracking capability of channel estimation under varying channels. Since our performance evaluation focuses on mobile communications systems such as 6G, uplink large-scale MU-MIMO is assumed, and Gaussian belief propagation (GaBP) is applied to detect multiple uplink signals. The effectiveness of this method relative to that of the traditional LS method with the same number of pilot symbols is demonstrated under time selective fading through computer simulations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | large-scale MIMOchannel estimationOFDMleast squares (LS)terminal mobilityGaussian belief propagation (GaBP) |
| Paper # | SRW2021-51,SeMI2021-50,CNR2021-25 |
| Date of Issue | 2021-11-18 (SRW, SeMI, CNR) |
| Conference Information | |
| Committee | SRW / SeMI / CNR |
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| Conference Date | 2021/11/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | IoT Workshop |
| Chair | Hanako Noda(Anritsu) / Koji Yamamoto(Kyoto Univ.) / Masayuki Kanbara(NAIST) |
| Vice Chair | Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Denki Univ.) / Hirokazu Sawada(NICT) / Kazuya Monden(Hitachi) / Yasunori Owada(NICT) / Yoshihiko Murakawa(Kyoto Inst. of Tech.) |
| Secretary | Keiichi Mizutani(NTT) / Kentaro Saito(NIigata Univ.) / Hirokazu Sawada(Cyber Univ.) / Kazuya Monden(Waseda Univ.) / Yasunori Owada(Osaka Univ.) / Yoshihiko Murakawa(Toshiba) |
| Assistant | Akihito Noda(Nanzan Univ.) / Yuki Katsumata(NTT DOCOMO) / Akihito Taya(Aoyama Gakuin Univ.) / Yu Nakayama(Tokyo Univ. of Agri. and Tech.) / Yuta Hoshi(NHK) / Junji Yamato(Kogakuin Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Short Range Wireless Communications / Technical Committee on Sensor Network and Mobile Intelligence / Technical Committee on Cloud Network Robotics |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Performance of Least-squares Channel Estimation for Large-scale MU-MIMO-OFDM in the Presence of Terminal Mobility |
| Sub Title (in English) | |
| Keyword(1) | large-scale MIMOchannel estimationOFDMleast squares (LS)terminal mobilityGaussian belief propagation (GaBP) |
| 1st Author's Name | Yutaka Itoya |
| 1st Author's Affiliation | Waseda University(Waseda Univ.) |
| 2nd Author's Name | Shuhei Saito |
| 2nd Author's Affiliation | Waseda University(Waseda Univ.) |
| 3rd Author's Name | Hirofumi Suganuma |
| 3rd Author's Affiliation | Waseda University(Waseda Univ.) |
| 4th Author's Name | Hiromichi Tomeba |
| 4th Author's Affiliation | Sharp Corporation(Sharp) |
| 5th Author's Name | Takashi Onodera |
| 5th Author's Affiliation | Sharp Corporation(Sharp) |
| 6th Author's Name | Fumiaki Maehara |
| 6th Author's Affiliation | Waseda University(Waseda Univ.) |
| Date | 2021-11-26 |
| Paper # | SRW2021-51,SeMI2021-50,CNR2021-25 |
| Volume (vol) | vol.121 |
| Number (no) | SRW-265,SeMI-266,CNR-267 |
| Page | pp.pp.82-83(SRW), pp.69-70(SeMI), pp.59-60(CNR), |
| #Pages | 2 |
| Date of Issue | 2021-11-18 (SRW, SeMI, CNR) |