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Paper Abstract and Keywords
Presentation 2012-01-27 09:25
Low Complexity Channel Estimation for MIMO-Constant Envelope Modulation
Ehab Mahmoud Mohamed, Osamu Muta, Hiroshi Furukawa (Kyushu Univ.) SIP2011-96 RCS2011-285
Abstract (in Japanese) (See Japanese page) 
(in English) MIMO-Constant Envelope Modulation, MIMO-CEM, with Low Resolution ADC receiver (1-bit ADC in the default operation) is considered as one of the alternative candidates to the well known MIMO-OFDM, suitable for wireless backhaul network in which relay nodes are fixed in their positions. Due to the low resolution ADC, MIMO-CEM channel estimation is considered as one of the major problems to withstand its real application. The authors have proposed an adaptive MIMO-CEM channel estimator based upon replicating the received preamble signal to exactly estimate the non-linear effect of the low resolution ADC. Because MIMO-CEM ADC is Intermediate Frequency (IF) sampled, the authors replicated the whole IF MIMO-CEM transceiver to exactly replicate the received preamble signal. Although this channel estimator has an excellent performance, its computational complexity is very high. This high complexity comes from the IF (high frequency) calculations. In this paper, we introduce a low complex MIMO-CEM adaptive channel estimator based upon linearly modeling the quantization error occurred at the low resolution IF sampled ADC, using linear curve fitting, in baseband. Hence, a baseband adaptive channel estimator can be designed, which has a much lower complexity than the IF estimator (previously designed by the authors). We prove the effectiveness of the proposed estimator under different channel scenarios using MSK and GMSK modulations.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / Constant envelope modulation / Channel estimation / Block based adaptive filter / Low resolution ADC / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 404, RCS2011-285, pp. 103-108, Jan. 2012.
Paper # RCS2011-285 
Date of Issue 2012-01-19 (SIP, 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 SIP2011-96 RCS2011-285

Conference Information
Committee RCS SIP  
Conference Date 2012-01-26 - 2012-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal Processing for Wireless Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2012-01-RCS-SIP 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Low Complexity Channel Estimation for MIMO-Constant Envelope Modulation 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) Constant envelope modulation  
Keyword(3) Channel estimation  
Keyword(4) Block based adaptive filter  
Keyword(5) Low resolution ADC  
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Keyword(7)  
Keyword(8)  
1st Author's Name Ehab Mahmoud Mohamed  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Osamu Muta  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Hiroshi Furukawa  
3rd Author's Affiliation Kyushu University (Kyushu Univ.)
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Speaker Author-1 
Date Time 2012-01-27 09:25:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # SIP2011-96, RCS2011-285 
Volume (vol) vol.111 
Number (no) no.403(SIP), no.404(RCS) 
Page pp.103-108 
#Pages 6 
Date of Issue 2012-01-19 (SIP, RCS) 

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