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Paper Abstract and Keywords
Presentation 2012-06-21 16:30
Investigation on Link Performance Modeling of Interference Rejection Combining Receiver for System Level Evaluation in LTE-Advanced Downlink
Yousuke Sano, Yusuke Ohwatari, Nobuhiko Miki, Akihito Morimoto, Yukihiko Okumura (NTT DOCOMO) RCS2012-57
Abstract (in Japanese) (See Japanese page) 
(in English) The interference rejection combining (IRC) receiver, which can suppress inter-cell interference, is effective in improving the cell edge user throughput.This paper investigates and proposes IRC receiver modeling schemes for the covariance matrix and channel estimation errors. In a system performance evaluation, the link performance modeling of the IRC receiver, i.e., the output signal-to-interference-plus-noise power ratio (SINR) after IRC reception including the estimation errors, is very important in evaluating the actual performance of the IRC receiver in the system level simulation. This is because these errors affect the suppression of the interference signals for the IRC receiver. This paper investigates and proposes IRC receiver modeling schemes focusing on the covariance matrix estimation error. As the modeling scheme for the covariance matrix, we propose a scheme that averages the conventional approximation using the complex Wishart distribution in the frequency domain to address issues that arise in a frequency selective fading channel. The results of simulations assuming LTE/LTE-Advanced downlink with two transmitter and two receiver antenna branches show that the proposed modeling scheme for the covariance matrix estimation error accurately approximate the performance of the realistic IRC receiver, which estimates the covariance matrix based on the demodulation reference signal (DM-RS), even in a frequency selective fading channel.
Keyword (in Japanese) (See Japanese page) 
(in English) LTE-Advanced / interference rejection combining / inter-cell interference / system level simulation / link performance modeling / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 89, RCS2012-57, pp. 85-90, June 2012.
Paper # RCS2012-57 
Date of Issue 2012-06-14 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 RCS  
Conference Date 2012-06-21 - 2012-06-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Hakodate City Central Library 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2012-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Investigation on Link Performance Modeling of Interference Rejection Combining Receiver for System Level Evaluation in LTE-Advanced Downlink 
Sub Title (in English)  
Keyword(1) LTE-Advanced  
Keyword(2) interference rejection combining  
Keyword(3) inter-cell interference  
Keyword(4) system level simulation  
Keyword(5) link performance modeling  
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1st Author's Name Yousuke Sano  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Yusuke Ohwatari  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Nobuhiko Miki  
3rd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
4th Author's Name Akihito Morimoto  
4th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
5th Author's Name Yukihiko Okumura  
5th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
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Speaker Author-1 
Date Time 2012-06-21 16:30:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2012-57 
Volume (vol) vol.112 
Number (no) no.89 
Page pp.85-90 
#Pages
Date of Issue 2012-06-14 (RCS) 


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