Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2012-12-14 13:30
Field Experiments on Throughput Considering Angle between Spatially Multiplexed Users for 4-by-2 MU-MIMO in LTE-Advanced Downlink
Keisuke Saito, Yuki Inoue, Teruo Kawamura, Hidehiro Andoh (NTT DOCOMO) RCS2012-224
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents field experimental results on 4-by-2 multi-user (MU) multiple-input multiple-output (MIMO) when a cross-polarized antenna array is employed as the base station transmitter antennas in the Long Term Evolution (LTE)-Advanced downlink. We clarify the influence of the angular difference between spatially multiplexed mobile stations (MSs) on the achievable throughput using experimental equipment, where eigenvalue decomposition (EVD)-based channel state information feedback per subband and minimum mean square error (MMSE)-based precoding are implemented. Field experimental results show that, in line-of-sight (LOS) and non LOS (NLOS) environments, the throughput of greater than 1 Gbps is achieved by using Rank-4 MU-MIMO when the angular difference between spatially multiplexed MSs is wider than approximately 40 and 50 degrees, respectively. The results also show that, in both environments, the throughput for Rank-2 MU-MIMO is robust against the angular difference between the two MSs. Therefore, assuming rank adaptation, MU-MIMO achieves higher spectrum efficiency than SU-MIMO.
Keyword (in Japanese) (See Japanese page) 
(in English) LTE-Advanced / Multi-user MIMO / User pair selection / Field experiment / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 351, RCS2012-224, pp. 245-250, Dec. 2012.
Paper # RCS2012-224 
Date of Issue 2012-12-06 (RCS) 
ISSN Print edition: ISSN 0913-5685    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 RCS2012-224

Conference Information
Committee NS RCS  
Conference Date 2012-12-13 - 2012-12-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network 
Paper Information
Registration To RCS 
Conference Code 2012-12-NS-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Field Experiments on Throughput Considering Angle between Spatially Multiplexed Users for 4-by-2 MU-MIMO in LTE-Advanced Downlink 
Sub Title (in English)  
Keyword(1) LTE-Advanced  
Keyword(2) Multi-user MIMO  
Keyword(3) User pair selection  
Keyword(4) Field experiment  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Keisuke Saito  
1st Author's Affiliation NTT DOCOMO (NTT DOCOMO)
2nd Author's Name Yuki Inoue  
2nd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
3rd Author's Name Teruo Kawamura  
3rd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
4th Author's Name Hidehiro Andoh  
4th Author's Affiliation NTT DOCOMO (NTT DOCOMO)
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2012-12-14 13:30:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2012-224 
Volume (vol) vol.112 
Number (no) no.351 
Page pp.245-250 
#Pages 6 
Date of Issue 2012-12-06 (RCS) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan