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Paper Abstract and Keywords
Presentation 2009-03-09 10:15
Reduced-Rank MMSE Signal Detection for MC/CDMA Communication Systems
Akihiko Furuya, Tsuyoshi Ichikawa, Kohei Otake (Hosei Univ.) IT2008-71 ISEC2008-129 WBS2008-84
Abstract (in Japanese) (See Japanese page) 
(in English) The MC/CDMA communication system has received much attention as one of the most promising systems for the future high-speed mobile communication because of its high frequency utilization efficiency and easy equalization of received data, suffered from only flat fading under multipath environments. But, when applying the MMSE signal detection, there occurs such a problem that it is very sensitive to channel estimation errors, causing severe SINR performance degradation. The DL (Diagonal Loading) technique has been mainly reported as a method to provide robustness against such errors. In this paper, we study the effectiveness of the reduce-rank signal detection method in providing the robustness against the channel estima-tion errors, in comparison with the DL technique. Specifically, two reduced-rank filters; the CGRRF (Conjugate Gradient Re-duced Rank Filter) based on the conjugate gradient method, and RGMF (Recursive Gradient MMSE Filter) previously pro-posed by the authors, are experimentally discussed with respect to the robustness, and comparisons with the DL are also given.
Keyword (in Japanese) (See Japanese page) 
(in English) MC/CDMA / diagonal loading / Reduced-Rank MMSE methods / RGMF / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 474, WBS2008-84, pp. 173-178, March 2009.
Paper # WBS2008-84 
Date of Issue 2009-03-02 (IT, ISEC, WBS) 
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 IT2008-71 ISEC2008-129 WBS2008-84

Conference Information
Committee WBS IT ISEC  
Conference Date 2009-03-09 - 2009-03-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Hakodate Mirai Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WBS 
Conference Code 2009-03-WBS-IT-ISEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Reduced-Rank MMSE Signal Detection for MC/CDMA Communication Systems 
Sub Title (in English)  
Keyword(1) MC/CDMA  
Keyword(2) diagonal loading  
Keyword(3) Reduced-Rank MMSE methods  
Keyword(4) RGMF  
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1st Author's Name Akihiko Furuya  
1st Author's Affiliation Hosei University (Hosei Univ.)
2nd Author's Name Tsuyoshi Ichikawa  
2nd Author's Affiliation Hosei University (Hosei Univ.)
3rd Author's Name Kohei Otake  
3rd Author's Affiliation Hosei University (Hosei Univ.)
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Speaker Author-1 
Date Time 2009-03-09 10:15:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # IT2008-71, ISEC2008-129, WBS2008-84 
Volume (vol) vol.108 
Number (no) no.472(IT), no.473(ISEC), no.474(WBS) 
Page pp.173-178 
#Pages 6 
Date of Issue 2009-03-02 (IT, ISEC, WBS) 

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