Joint sector identity and integer part of carrier frequency offset detection by phase-difference in Long Term Evolution cell search process

In the Long Term Evolution (LTE) system, the initial cell search needs not only to achieve the timing synchronisations of symbols, slots and frames, but also to detect the sector identity (ID), the cell ID group and the carrier frequency offset (CFO), which includes an integer part (ICFO) and a frac...

Full description

Saved in:
Bibliographic Details
Published in:IET communications 2013-07, Vol.7 (10), p.950-959
Main Authors: Su, Szu-Lin, Lin, Yung-Chuan, Fan, Yun-Jhen
Format: Article
Language:English
Subjects:
Algorithms
base station broadcasting
broadcast communication
Carrier frequencies
cell ID group
cellular radio
Evolution
ICFO
integer carrier frequency offset detection
Integers
joint sector identity
Long Term Evolution
Long Term Evolution cell search process
LTE
Offsets
Phases
phase‐difference
primary synchronisation signal
probability
PSS‐matching process
Search process
secondary synchronisation signal
Signal processing
symbol timing synchronisation
synchronisation
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the Long Term Evolution (LTE) system, the initial cell search needs not only to achieve the timing synchronisations of symbols, slots and frames, but also to detect the sector identity (ID), the cell ID group and the carrier frequency offset (CFO), which includes an integer part (ICFO) and a fractional part. To accomplish this cell search process, two synchronisation signals, the primary synchronisation signal (PSS) and the secondary synchronisation signal, are periodically broadcasted from base stations in the LTE system. The PSS is mainly used for sector ID detection. In this study, an innovative algorithm for detecting the sector ID and ICFO together via the PSS-matching process is presented. In the proposed scheme, the phases of the differential correlation instead of the absolute values are adopted to determine the ICFO. Furthermore, a new set of PSS is proposed in order to improve the success probability of ICFO detection. Compared with conventional schemes, the proposed scheme can detect both the sector ID and ICFO with higher accuracy and much lower complexity.
ISSN:1751-8628
1751-8636
1751-8636
DOI:10.1049/iet-com.2012.0307