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Paper Abstract and Keywords
Presentation 2024-07-18 09:25
Base Station Coordinated Multi-Cell MU-MIMO Canceller considering to the Accuracy of Channel Estimation
Ryohei Maeda, Takuya Kaneda, Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech./SoftBank) RCS2024-95
Abstract (in Japanese) (See Japanese page) 
(in English) In mobile communication systems such as 5G, ultra-high-speed data transmission anywhere within a cell is expected. In cellular systems, which the same frequency is repeatedly reused in all cells, communication quality deteriorates due to adjacent cell interference, especially near cell boundaries. The authors have proposed an interference cancellation technique near cell boundaries that simultaneously uses a virtual cell MU-MIMO canceler and adaptive beamforming to cancel adjacent cell interference by forming a virtual cell in which neighboring base stations cooperate with each other. In 4G and 5G, SRS (Sounding Reference Signal) is defined to estimate the channel response of neighboring cell users. In previous studies, we proposed "weight optimization" which modifies the weights appropriately, considering the degradation of estimation accuracy due to timing discrepancies of SRS arrival and evaluated the proposed weight optimization using a basic cell configuration with one adjacent cell. In this study, we consider multiple surrounding cells, which are the actual cell configuration, and evaluate the application effect of base station coordinated MU-MIMO canceller with "weight optimization" extended for multiple cells.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile Communication / MU-MIMO / TDD / SRS / Network Coordination / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 107, RCS2024-95, pp. 52-57, July 2024.
Paper # RCS2024-95 
Date of Issue 2024-07-10 (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 RCS2024-95

Conference Information
Committee RCC RCS SeMI NS SR RISING  
Conference Date 2024-07-17 - 2024-07-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Citizens Activities Promotion Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2024-07-RCC-RCS-SeMI-NS-SR-RISING 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Base Station Coordinated Multi-Cell MU-MIMO Canceller considering to the Accuracy of Channel Estimation 
Sub Title (in English)  
Keyword(1) Mobile Communication  
Keyword(2) MU-MIMO  
Keyword(3) TDD  
Keyword(4) SRS  
Keyword(5) Network Coordination  
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1st Author's Name Ryohei Maeda  
1st Author's Affiliation SoftBank Corp. (SoftBank)
2nd Author's Name Takuya Kaneda  
2nd Author's Affiliation SoftBank Corp. (SoftBank)
3rd Author's Name Takafumi Fujii  
3rd Author's Affiliation SoftBank Corp. (SoftBank)
4th Author's Name Teruya Fujii  
4th Author's Affiliation Tokyo Institute of Technology/SoftBank Corp. (Tokyo Tech./SoftBank)
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Speaker Author-1 
Date Time 2024-07-18 09:25:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2024-95 
Volume (vol) vol.124 
Number (no) no.107 
Page pp.52-57 
#Pages 6 
Date of Issue 2024-07-10 (RCS) 

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