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Paper Abstract and Keywords
Presentation 2007-07-20 14:10
Enhanced Simplified Maximum Likelihood Detection(ES-MLD) in Multiuser MIMO Downlink in Time-Variant Environment
Tomoyuki Yamada, Wenjie Jiang, Yasushi Takatori, Riichi Kudo, Atsushi Ohta, Shuji Kubota (NTT) AP2007-66
Abstract (in Japanese) (See Japanese page) 
(in English) The actual channel response matrix is different from CSIT due to time-variant environment in multiuser MIMO downlink. This causes IUI (Inter-User-Interference) because ZF-method cannot create perfect null to undesired users. IUI can be causing large performance degradation when using the generally-used receive beamforming. This paper proposed ES-MLD (Enhanced Simplified Maximum Likelihood Detection) in multiuser MIMO scenario which is the expanded concept of S-MLD (Simplified MLD). S-MLD has been developed in the single-user scenario which is vulnerable to unexpected interferences. On the other hand, the proposed ES-MLD is robust to IUI because the method decodes the undesired signals. The computer simulation shows that ES-MLD has the robustness to environment change.
Keyword (in Japanese) (See Japanese page) 
(in English) Multiuser MIMO Downlink / Time-Variant Environment / Simplified MLD / Succesive Detection / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 144, AP2007-66, pp. 139-142, July 2007.
Paper # AP2007-66 
Date of Issue 2007-07-12 (AP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee AP SAT  
Conference Date 2007-07-19 - 2007-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Daiichi-Takimotokan(Noboribetsu) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Communications, Antennas and Progation, etc. 
Paper Information
Registration To AP 
Conference Code 2007-07-AP-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Enhanced Simplified Maximum Likelihood Detection(ES-MLD) in Multiuser MIMO Downlink in Time-Variant Environment 
Sub Title (in English)  
Keyword(1) Multiuser MIMO Downlink  
Keyword(2) Time-Variant Environment  
Keyword(3) Simplified MLD  
Keyword(4) Succesive Detection  
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1st Author's Name Tomoyuki Yamada  
1st Author's Affiliation NTT Network Innovation Laboratories (NTT)
2nd Author's Name Wenjie Jiang  
2nd Author's Affiliation NTT Network Innovation Laboratories (NTT)
3rd Author's Name Yasushi Takatori  
3rd Author's Affiliation NTT Network Innovation Laboratories (NTT)
4th Author's Name Riichi Kudo  
4th Author's Affiliation NTT Network Innovation Laboratories (NTT)
5th Author's Name Atsushi Ohta  
5th Author's Affiliation NTT Network Innovation Laboratories (NTT)
6th Author's Name Shuji Kubota  
6th Author's Affiliation NTT Network Innovation Laboratories (NTT)
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Speaker Author-1 
Date Time 2007-07-20 14:10:00 
Presentation Time 20 minutes 
Registration for AP 
Paper # AP2007-66 
Volume (vol) vol.107 
Number (no) no.144 
Page pp.139-142 
#Pages 4 
Date of Issue 2007-07-12 (AP) 

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