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Paper Abstract and Keywords
Presentation 2022-12-15 11:40
Evaluation of MMSE Postcoding Schemes for Reducing Inter-cluster-interference in A Cellular Distributed MU-MIMO System
Ryo Takahashi, Hidenori Matsuo, Fumiyuki Adachi (Tohoku Univ.) RCS2022-189
Abstract (in Japanese) (See Japanese page) 
(in English) Cellular distributed multi-user MIMO (MU-MIMO) is a system in which a large number of distributed antennas deployed over a service area are divided into multiple base station cells, user clusters are formed in each base station cell, and cluster-wise distributed MU-MIMO is performed in parallel. The formation of base station cells ensures system scalability, and the use of cluster-wise distributed MU-MIMO in parallel can spatially multiplex users in each cell while ensuring low signal processing computational complexity. The challenge for such a system is the mitigation of inter-cell interference and inter-cluster interference. Inter-cluster interference can be reduced by Minimum Mean Square Error (MMSE) pre/postcoding scheme. So far, we proposed two types of pre/postcoding schemes. One is the MMSE pre/postcoding scheme which considers the inter-cluster interference as an equivalent noise and the other is the inter-cluster interference suppressing MMSE pre/postcoding scheme which takes the instantaneous inter-cluster interference into the channel correlation matrix. In this paper, we evaluate the interference reduction effects of both postcoding schemes for the uplink transmission in a cellular distributed MU-MIMO system. The uplink user capacities achievable by both MMSE postcoding schemes are evaluated by computer simulation and are compared together with the computational complexity.
Keyword (in Japanese) (See Japanese page) 
(in English) cellular distributed MU-MIMO / user cluster / interference reduction / MMSE / computational complexity / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 311, RCS2022-189, pp. 25-30, Dec. 2022.
Paper # RCS2022-189 
Date of Issue 2022-12-08 (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 RCS2022-189

Conference Information
Committee RCS NS  
Conference Date 2022-12-15 - 2022-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya Institute of Technology, and Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multi-hop/Relay/Cooperation, Disaster-resistant wireless network, Sensor/Mesh network, Ad-hoc network, D2D/M2M, Wireless network coding, Handover/AP switching/Connected cell control/Load balancing among base stations/Mobile network dynamic reconfiguration, QoS/QoE assurance, Wireless VoIP, IoT, Edge computing, etc. 
Paper Information
Registration To RCS 
Conference Code 2022-12-RCS-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of MMSE Postcoding Schemes for Reducing Inter-cluster-interference in A Cellular Distributed MU-MIMO System 
Sub Title (in English)  
Keyword(1) cellular distributed MU-MIMO  
Keyword(2) user cluster  
Keyword(3) interference reduction  
Keyword(4) MMSE  
Keyword(5) computational complexity  
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Keyword(8)  
1st Author's Name Ryo Takahashi  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Hidenori Matsuo  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Fumiyuki Adachi  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2022-12-15 11:40:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2022-189 
Volume (vol) vol.122 
Number (no) no.311 
Page pp.25-30 
#Pages 6 
Date of Issue 2022-12-08 (RCS) 

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