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Paper Abstract and Keywords
Presentation 2009-09-03 11:15
Study on Transmission Method in Short Range MIMO Communication
Kentaro Nishimori, Tomohiro Seki (NTT Corp.), Naoki Honma (Iwate Univ.), Ken Hiraga, Masato Mizoguchi (NTT Corp.)
Abstract (in Japanese) (See Japanese page) 
(in English) We proposed a novel communication scheme, which uses short range MIMO transmission. In the short range MIMO transmission, the distance between two facing array antennas is comparable with the size of the array antenna aperture. We found that the channel capacity with an optimal antenna spacing is higher than ergodic capacity in i.i.d. channel since the short range MIMO scheme has a high similarity with a parallel data transmission. In this paper, the channel capacity and transmission rate are compared due to actual transmission schemes which are used in MIMO systems. When the optimal element spacing is obtained, the channel capacity by Zero forcing (ZF) is almost same with that by Eigen-mode beamforming (EM-BF). On the other hand, we clarify that \emph{perfect} parallel transmission is very difficult because inter-stream interference occurs even in wide antenna spacing. We show that the optimal element spacing is a key parameter in the short range MIMO communication; it is very effective to design array antennas with the optimal element spacing for a simple hardware configuration.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / short range communication / Eigen-mode beamforming / Zero Forcing / parallel transmission / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 183, AP2009-83, pp. 23-28, Sept. 2009.
Paper # AP2009-83 
Date of Issue 2009-08-27 (AP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee AP  
Conference Date 2009-09-03 - 2009-09-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Hachinohe Inst. of Tech. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2009-09-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Transmission Method in Short Range MIMO Communication 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) short range communication  
Keyword(3) Eigen-mode beamforming  
Keyword(4) Zero Forcing  
Keyword(5) parallel transmission  
1st Author's Name Kentaro Nishimori  
1st Author's Affiliation NTT Network Innovation Laboratories, NTT Corporration (NTT Corp.)
2nd Author's Name Tomohiro Seki  
2nd Author's Affiliation NTT Network Innovation Laboratories, NTT Corporration (NTT Corp.)
3rd Author's Name Naoki Honma  
3rd Author's Affiliation Iwate University (Iwate Univ.)
4th Author's Name Ken Hiraga  
4th Author's Affiliation NTT Network Innovation Laboratories, NTT Corporration (NTT Corp.)
5th Author's Name Masato Mizoguchi  
5th Author's Affiliation NTT Network Innovation Laboratories, NTT Corporration (NTT Corp.)
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Date Time 2009-09-03 11:15:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2009-83 
Volume (vol) IEICE-109 
Number (no) no.183 
Page pp.23-28 
#Pages IEICE-6 
Date of Issue IEICE-AP-2009-08-27 

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