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Paper Abstract and Keywords
Presentation 2014-10-17 15:15
Performance Evaluations of Cell Search Time Using Separate Frequency Spectrum for Heterogeneous Networks Including Indoor Small Cells
Naoki Noguchi (Tokyo City Univ.), Satoshi Nagata (NTT DOCOMO), Mamoru Sawahashi (Tokyo City Univ.) RCS2014-192
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents cell search time performance based on the Long Term Evolution (LTE)
synchronization signals with the separate frequency spectra for heterogeneous networks including indoor small
cells. We assume the indoor small cell models in the hotzone buildings that are specified in the 3rd Generation
Partnership Project (3GPP) technical report (TR). Since the carrier frequency of 3.5 GHz is assumed for the
indoor small cell, the influence of frequency drift of a standard oscillator of a set of user equipment on the initial
cell search time performance is not ignored. Hence, we present automatic frequency control (AFC) for cell search
detection. In the AFC, the frequency drift is estimated based on the inner product of the former half and latter half
of correlation signals within the FFT block including PSS, and the frequency drift for SSS sequence detection is
compensated employing the estimated frequency drift value. Computer simulation results show the effect of the
AFC on the initial cell search time performance.
Keyword (in Japanese) (See Japanese page) 
(in English) Cell search / LTE / synchronization signal / heterogeneous network / indoor small cell / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 254, RCS2014-192, pp. 201-206, Oct. 2014.
Paper # RCS2014-192 
Date of Issue 2014-10-09 (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 2014-10-16 - 2014-10-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Keio Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, etc. 
Paper Information
Registration To RCS 
Conference Code 2014-10-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Evaluations of Cell Search Time Using Separate Frequency Spectrum for Heterogeneous Networks Including Indoor Small Cells 
Sub Title (in English)  
Keyword(1) Cell search  
Keyword(2) LTE  
Keyword(3) synchronization signal  
Keyword(4) heterogeneous network  
Keyword(5) indoor small cell  
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Keyword(7)  
Keyword(8)  
1st Author's Name Naoki Noguchi  
1st Author's Affiliation Tokyo City University (Tokyo City Univ.)
2nd Author's Name Satoshi Nagata  
2nd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
3rd Author's Name Mamoru Sawahashi  
3rd Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Speaker Author-1 
Date Time 2014-10-17 15:15:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2014-192 
Volume (vol) vol.114 
Number (no) no.254 
Page pp.201-206 
#Pages
Date of Issue 2014-10-09 (RCS) 


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