講演抄録/キーワード |
講演名 |
2021-11-26 15:00
[ポスター講演]Performance of Least-squares Channel Estimation for Large-scale MU-MIMO-OFDM in the Presence of Terminal Mobility ○Yutaka Itoya・Shuhei Saito・Hirofumi Suganuma(Waseda Univ.)・Hiromichi Tomeba・Takashi Onodera(Sharp)・Fumiaki Maehara(Waseda Univ.) SRW2021-51 SeMI2021-50 CNR2021-25 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
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. |
キーワード |
(和) |
/ / / / / / / |
(英) |
large-scale MIMO / channel estimation / OFDM / least squares (LS) / terminal mobility / Gaussian belief propagation (GaBP) / / |
文献情報 |
信学技報, vol. 121, no. 265, SRW2021-51, pp. 82-83, 2021年11月. |
資料番号 |
SRW2021-51 |
発行日 |
2021-11-18 (SRW, SeMI, CNR) |
ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
SRW2021-51 SeMI2021-50 CNR2021-25 |
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