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Paper Abstract and Keywords
Presentation 2012-10-18 10:15
Performance Evaluation of Interference Rejection Combining Receiver in LTE-Advanced Uplink CoMP
Takashi Iwai (PMCRD), Kazuki Takeda, Akihiko Nishio (Panasonic), Atsushi Matsumoto, Sadaki Futagi (PMCRD) RCS2012-138 SR2012-58 AN2012-32 USN2012-35
Abstract (in Japanese) (See Japanese page) 
(in English) Introduction of coordinated multipoint (CoMP) operation is considered to enhance the spectrum efficiency in LTE-Advanced (Release 11) uplink. The multiple user equipments (UEs) within the coordinated cells should be multiplexed on the same frequency to increase spectrum efficiency. The interference rejection combining (IRC) receiver is effective in separating the signals of multiplexed UEs on the same frequency. The IRC receiver requires highly accurate channel estimation of the desired and interfered signals. Hence, the cell to apply the CoMP operation needs to calculate the channel estimation of each UE with high accuracy using the de-modulation reference signal (DMRS) of multiplexing UEs. However, assuming realistic cell specific scheduler, the performance improvement by applying CoMP decreases because the channel estimation accuracy is deteriorated greatly due to collapse the orthogonality relation of DMRS sequences among multiplexing UEs. In this paper, we propose the IRC receiver that changes the covariance matrix estimation method based on whether DMRS sequences can be separated or not. This paper verifies the uplink CoMP performance using the proposed IRC receiver by using system level simulation. The simulation results show that the proposed IRC receiver improves the system performance and cell-edge throughput more than 10% over the conventional IRC receiver.
Keyword (in Japanese) (See Japanese page) 
(in English) LTE-Advanced / uplink / CoMP / IRC receiver / inter-cell interference / DMRS / system level simulation /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 239, RCS2012-138, pp. 81-86, Oct. 2012.
Paper # RCS2012-138 
Date of Issue 2012-10-10 (RCS, SR, AN, USN) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2012-138 SR2012-58 AN2012-32 USN2012-35

Conference Information
Committee SR AN USN RCS  
Conference Date 2012-10-17 - 2012-10-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) wireless distributed network, general topics 
Paper Information
Registration To RCS 
Conference Code 2012-10-SR-AN-USN-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Evaluation of Interference Rejection Combining Receiver in LTE-Advanced Uplink CoMP 
Sub Title (in English)  
Keyword(1) LTE-Advanced  
Keyword(2) uplink  
Keyword(3) CoMP  
Keyword(4) IRC receiver  
Keyword(5) inter-cell interference  
Keyword(6) DMRS  
Keyword(7) system level simulation  
1st Author's Name Takashi Iwai  
1st Author's Affiliation Panasonic Mobile Communications R&D Lab. Co.,Ltd (PMCRD)
2nd Author's Name Kazuki Takeda  
2nd Author's Affiliation Panasonic Corporation (Panasonic)
3rd Author's Name Akihiko Nishio  
3rd Author's Affiliation Panasonic Corporation (Panasonic)
4th Author's Name Atsushi Matsumoto  
4th Author's Affiliation Panasonic Mobile Communications R&D Lab. Co.,Ltd (PMCRD)
5th Author's Name Sadaki Futagi  
5th Author's Affiliation Panasonic Mobile Communications R&D Lab. Co.,Ltd (PMCRD)
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Date Time 2012-10-18 10:15:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2012-138,IEICE-SR2012-58,IEICE-AN2012-32,IEICE-USN2012-35 
Volume (vol) IEICE-112 
Number (no) no.239(RCS), no.240(SR), no.241(AN), no.242(USN) 
Page pp.81-86(RCS), pp.139-144(SR), pp.51-56(AN), pp.45-50(USN) 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2012-10-10,IEICE-SR-2012-10-10,IEICE-AN-2012-10-10,IEICE-USN-2012-10-10 

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