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Paper Abstract and Keywords
Presentation 2021-08-24 11:15
[Short Paper] Opportunistic Scheduling for Downlink MU-MIMO Systems
Youchen Lu, Satoshi Denno, Yafei Hou (Okayama University) SRW2021-16
Abstract (in Japanese) (See Japanese page) 
(in English) This paper investigates the user scheduling method for the downlink of the MU-MIMO system.

As we all know, multiple-input and multiple-output (MIMO) technology has become one of the main technologies. The multi-user and multiple-input multiple-output (MU-MIMO) system has also attracted more and more attention. However, since MU-MIMO system share the same time and frequency resources, multi-user co-channel interference (CCI) is inevitably introduced, which affects the reliable reception of data and reduces the throughput of the MU-MIMO system. In order to effectively suppress the CCI of multiple users, the base station (abbreviated as BS) needs to use a reasonable user scheduling method.

In order to make the base station (BS) learn the user's channel information through channel reciprocity and more suitable for systems with precoding technology, we choose downlink MU-MIMO system in Time Division Duplex (TDD) mode. In addition, we also added minimum mean squared error (MMSE) precoding to the system, which can effectively suppress the communication interference between multiple users.

User scheduling increases the channel capacity by selecting a set of best users, thereby increasing the multi-user multiple input multiple output (MU-MIMO) gain. However, it is difficult to know which of the many existing user scheduling methods can give full play to the advantages in downlink MU-MIMO system. In this paper, we compare four different user scheduling methods in a downlink $N_mathrm{T} times N_mathrm{R}$ MU-MIMO system, and according to the simulation results of each method, we propose a more suitable and efficient user scheduling method in different conditions.
Keyword (in Japanese) (See Japanese page) 
(in English) MU-MIMO / User Scheduling / Precoding Technology / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 145, SRW2021-16, pp. 13-13, Aug. 2021.
Paper # SRW2021-16 
Date of Issue 2021-08-17 (SRW) 
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 SRW2021-16

Conference Information
Committee SRW  
Conference Date 2021-08-24 - 2021-08-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) WLAN， WPAN， Ad-hoc, mmWave, etc. 
Paper Information
Registration To SRW 
Conference Code 2021-08-SRW 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Opportunistic Scheduling for Downlink MU-MIMO Systems 
Sub Title (in English)  
Keyword(1) MU-MIMO  
Keyword(2) User Scheduling  
Keyword(3) Precoding Technology  
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1st Author's Name Youchen Lu  
1st Author's Affiliation Okayama University (Okayama University)
2nd Author's Name Satoshi Denno  
2nd Author's Affiliation Okayama University (Okayama University)
3rd Author's Name Yafei Hou  
3rd Author's Affiliation Okayama University (Okayama University)
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Speaker Author-1 
Date Time 2021-08-24 11:15:00 
Presentation Time 15 minutes 
Registration for SRW 
Paper # SRW2021-16 
Volume (vol) vol.121 
Number (no) no.145 
Page p.13 
#Pages 1 
Date of Issue 2021-08-17 (SRW) 

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