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Paper Abstract and Keywords
Presentation 2019-08-22 09:00
Signal Detection Schemes based on Multiuser Detection for Downlink MIMO-NOMA Systems
Takayuki Okawa, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech.) RCS2019-146
Abstract (in Japanese) (See Japanese page) 
(in English) For the next generation mobile communication, a combination of MIMO and NOMA is referred to as MIMO-NOMA and has been investigated in order to meet a demand for rapidly growing throughput. As the number of transmit/receive antennas of MIMO and the number of multiple users of NOMA increase, however, a amount of computational complexity of the optimum signal detection grows exponentially. In the conventional NOMA system, successive interference cancellation (SIC) is employed as its signal detection and can reduce the complexity drastically. As well-known signal detection schemes of MIMO, the maximum likelihood detection (MLD) is the optimal signal detection, while MMSE is classified into the linear detection and can separate data streams with low complexity. In this report, the following schemes are considered signal detection schemes of MIMO-NOMA: i) The MLD method, which detects the signals without separating data streams, ii) concatenation of SIC and MMSE, which separates the data streams and can reduce the complexity, iii) QRM-MLD, which combines the MLD with the QR decomposition of the channel matrix and applies the M-algorithm to spatially multiplexed signals, and iv) QRM-MLDM, which extends the M-algorithm of QRM- MLD to the signal detection for NOMA. Compared with iii) QRM-MLD, iv) QRM-MLDM aims to reduce the complexity while keeping the accuracy of signal detection. While the complexity of the above signal detection schemes is theoretically analyzed, their average bit error rate (BER) performances are evaluated by computer simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / NOMA / SIC / QR-MLD / QRM-MLD / M-algorithm / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 176, RCS2019-146, pp. 1-6, Aug. 2019.
Paper # RCS2019-146 
Date of Issue 2019-08-15 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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)
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Conference Information
Committee RCS SAT  
Conference Date 2019-08-22 - 2019-08-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Communications, Broadcasting, Forward Error Correction, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2019-08-RCS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Signal Detection Schemes based on Multiuser Detection for Downlink MIMO-NOMA Systems 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) NOMA  
Keyword(3) SIC  
Keyword(4) QR-MLD  
Keyword(5) QRM-MLD  
Keyword(6) M-algorithm  
1st Author's Name Takayuki Okawa  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
2nd Author's Name Yuyuan Chang  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
3rd Author's Name Kazuhiko Fukawa  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
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Date Time 2019-08-22 09:00:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2019-146 
Volume (vol) IEICE-119 
Number (no) no.176 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2019-08-15 

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