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Paper Abstract and Keywords
Presentation 2024-06-20 16:55
Characterization of Sub-THz-Band MIMO Spatial Multiplexing With Channel Estimation Errors
Naoki Hamada, Toshihiko Nishimura, Yasutaka Ogawa (Hokkaido Univ.), Junichiro Hagiwara (Mukogawa Women's Univ.), Takeo Ohgane (Hokkaido Univ.) RCS2024-68
Abstract (in Japanese) (See Japanese page) 
(in English) A sub-THz band is expected to play an important role in extreme high-data-rate transmission of sixth-generation mobile communications. In this frequency band, beamforming using array antennas with many elements is an essential technique to compensate for very large propagation losses. To achieve higher data rate in the sub-THz band, it is important to improve frequency utilization efficiency with MIMO spatial multiplexing in addition to using its wide bandwidth. On the other hand, it has been reported that the number of multipaths is small in sub-THz-band indoor propagation environments, which may limit the effect of spatial multiplexing with MIMO systems. In this paper, the characteristics of MIMO spatial multiplexing in the sub-THz band are evaluated by computer simulations, assuming office and factory environments. The results show that channel estimation errors due to noise have a significant impact on the transmission characteristics of MIMO spatial multiplexing. However, when two proposed measures to reduce channel estimation errors are applied, MIMO spatial multiplexing is confirmed to achieve higher channel capacity than single-layer transmission. This paper also reveals that factory environments have a higher spatial multiplexing effect than office environments.
Keyword (in Japanese) (See Japanese page) 
(in English) sub-THz band / indoor propagation environment / MIMO / hybrid beamforming / channel estimation errors / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 84, RCS2024-68, pp. 241-246, June 2024.
Paper # RCS2024-68 
Date of Issue 2024-06-12 (RCS) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2024-68

Conference Information
Committee RCS  
Conference Date 2024-06-19 - 2024-06-21 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2024-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Characterization of Sub-THz-Band MIMO Spatial Multiplexing With Channel Estimation Errors 
Sub Title (in English)  
Keyword(1) sub-THz band  
Keyword(2) indoor propagation environment  
Keyword(3) MIMO  
Keyword(4) hybrid beamforming  
Keyword(5) channel estimation errors  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Naoki Hamada  
1st Author's Affiliation Hokkaido University (Hokkaido Univ.)
2nd Author's Name Toshihiko Nishimura  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Yasutaka Ogawa  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ.)
4th Author's Name Junichiro Hagiwara  
4th Author's Affiliation Mukogawa Women's University (Mukogawa Women's Univ.)
5th Author's Name Takeo Ohgane  
5th Author's Affiliation Hokkaido University (Hokkaido Univ.)
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Speaker Author-1 
Date Time 2024-06-20 16:55:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2024-68 
Volume (vol) vol.124 
Number (no) no.84 
Page pp.241-246 
#Pages 6 
Date of Issue 2024-06-12 (RCS) 

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