Presentation	2014-10-17 Performance Evaluations of Cell Search Time Using Separate Frequency pectrum for Heterogeneous Networks Including Indoor Small Cells Naoki Noguchi, Satoshi Nagata, Mamoru Sawahashi,
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Abstract(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 3^ 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.
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Keyword(in English)	Cell search / LTE / synchronization signal / heterogeneous network / indoor small cell
Paper #	RCS2014-192
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Committee	RCS
Conference Date	2014/10/9(1days)
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Paper Information
Registration To	Radio Communication Systems (RCS)
Language	JPN
Title (in Japanese)	(See Japanese page)
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Title (in English)	Performance Evaluations of Cell Search Time Using Separate Frequency pectrum 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
1st Author's Name	Naoki Noguchi
1st Author's Affiliation	Department of Information and Communication Engineering, Tokyo City University()
2nd Author's Name	Satoshi Nagata
2nd Author's Affiliation	Radio Access Development Department, NTT DOCOMO, INC.
3rd Author's Name	Mamoru Sawahashi
3rd Author's Affiliation	Department of Information and Communication Engineering, Tokyo City University
Date	2014-10-17
Paper #	RCS2014-192
Volume (vol)	vol.114
Number (no)	254
Page	pp.pp.-
#Pages	6
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