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Paper Abstract and Keywords
Presentation 2014-01-23 08:55
A Study on Downlink Inter-Cell Interference Cancellation from Macro-Cell to Small-Cell Suitable for Heterogeneous Networks Employing Cell Range Expansion
Manabu Mikami, Masayuki Miyashita, Teruya Fujii (Softbank Mobile) SIP2013-85 RCS2013-255
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, data traffic is explosively increasing in cellular mobile communication system due to the prevalence of smart phones. A heterogeneous network overlaid with small-cells (HetNet), in which small-cell base stations (BSs) with a low transmission power are placed at the hot spot area of a macro-cell base station with a high transmission power, has been receiving attention in order to deal with the increasing traffic. For HetNet, Cell Range Expansion (CRE), in which a bias value is used for the reference signal received power (RSRP) from small-cell BSs, has been investigated as a promising approach to offload the traffic into the small-cell from the macro-cell. However, User Equipments (UEs), located in the small-cell area expanded by CRE, suffers large inter-cell interference (ICI) from the macro-cell BSs for the case of co-channel HetNet in which the same carrier frequency is used between macro-cells and small-cells. Hence, it is required for co-channel HetNet to mitigate ICI. In order to improve the downlink user throughput characteristics for co-channel HetNet employing large CRE bias value, this report investigates a successive interference cancellation (SIC) technique of codeword level SIC. The codeword level SIC realizes a large ICI mitigation effect with the use of the channel-decoding result of interference signals. Simulation results confirm that small-cell UEs equipped with codeword level SIC effectively suppresses the ICI from the macro-cell BSs.
Keyword (in Japanese) (See Japanese page) 
(in English) heterogeneous network / inter-cell interference / successive interference cancellation / channel docoding / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 386, RCS2013-255, pp. 1-6, Jan. 2014.
Paper # RCS2013-255 
Date of Issue 2014-01-16 (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)
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Conference Information
Committee RCS SIP  
Conference Date 2014-01-23 - 2014-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal Processing for Wireless Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2014-01-RCS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Downlink Inter-Cell Interference Cancellation from Macro-Cell to Small-Cell Suitable for Heterogeneous Networks Employing Cell Range Expansion 
Sub Title (in English)  
Keyword(1) heterogeneous network  
Keyword(2) inter-cell interference  
Keyword(3) successive interference cancellation  
Keyword(4) channel docoding  
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1st Author's Name Manabu Mikami  
1st Author's Affiliation Softbank Mobile Corp. (Softbank Mobile)
2nd Author's Name Masayuki Miyashita  
2nd Author's Affiliation Softbank Mobile Corp. (Softbank Mobile)
3rd Author's Name Teruya Fujii  
3rd Author's Affiliation Softbank Mobile Corp. (Softbank Mobile)
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Speaker Author-1 
Date Time 2014-01-23 08:55:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # SIP2013-85, RCS2013-255 
Volume (vol) vol.113 
Number (no) no.385(SIP), no.386(RCS) 
Page pp.1-6 
#Pages
Date of Issue 2014-01-16 (SIP, RCS) 


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