NDLI: Fast Cell Search Method Using PSS and SSS Based on Frequency Offset Estimation for Heterogeneous Networks with Separate Frequency Spectrum

Content Provider	IEEE Xplore Digital Library
Author	Noguchi, N. Nagata, S. Sawahashi, M.
Copyright Year	2015
Description	Author affiliation: Tokyo City Univ., Tokyo, Japan (Noguchi, N.; Sawahashi, M.) \|\| NTT DOCOMO, Inc., Kanagawa, Japan (Nagata, S.)
Abstract	This paper proposes a fast initial cell search method based on frequency offset estimation for Long Term Evolution (LTE) heterogeneous networks using separate frequency spectra between a macrocell and a small cell. When using the primary synchronization signal (PSS) and secondary synchronization signal (SSS) in the LTE radio interface, the initial cell search time for small cells with a high carrier frequency becomes very long due to the false detection of the PSS received timing due to the large frequency offset. In the proposed initial cell search method, we first measure the frequency error of a temperature compensated crystal oscillator (TCXO) of a set of user equipment for a macrocell with the carrier frequency of 2 GHz. Based on the estimated frequency offset, we detect the correct PSS received timing among the probable timing candidates for a small cell that are estimated from the correlation between the received signal with the 3.5-GHz carrier frequency and PSS sequence replica for small cells. System-level simulation results show that by using the proposed cell search method, the cell search time to achieve the cell ID detection probability of 99% is within approximately 100 ms even with the large frequency offset of 10.5 kHz.
Starting Page	1
Ending Page	6
File Size	461758
Page Count	6
File Format	PDF
ISBN	9781479980888
DOI	10.1109/VTCSpring.2015.7145838
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-11
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Correlation Frequency estimation Macrocell networks Timing OFDM Search methods Time-frequency analysis
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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