A robust scheme in downlink synchronization and initial cell search for 3GPP LTE system

Lih Chang Wung, Yung Chuan Lin, Yun Jhen Fan, Szu-Lin Su

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

In cellular communication systems the mobile station (MS) must be able to perform initial synchronization and search for a base station to set up the downlink access. This process is called the initial cell search. To accomplish the operations, two synchronization signals, the primary synchronization signal (PSS) and the secondary synchronization signal (SSS), are periodically transmitted from the base station in the 3GPP LTE (Long Term Evolution) system. It is announced OFDM signal is applied to downlink transmission in the LTE cellular network. However, OFDM signal is sensitive to synchronization error, such as carrier frequency offset (CFO). CFO, which exists between the transmitter and the receiver, causes loss of orthogonality among subcarriers and inter-carrier interference (ICI), thus degrades the system performance. In this paper all the procedures of synchronization and initial cell search are specified. An innovative processing algorithm for PSS, including the theoretical analysis and deduction, is provided. Most important of all, the proposed scheme is able to evaluate the integer carrier frequency offset (ICFO) more accurately and improve the detection error rate effectively. Comparisons between the proposed scheme and the existing ones are illustrated in the simulation results.

Original languageEnglish
Title of host publicationInternational Symposium on Wireless and Pervasive Computing, ISWPC 2011
DOIs
Publication statusPublished - 2011 May 23
Event6th International Symposium on Wireless and Pervasive Computing, ISWPC 2011 - Hong Kong, China
Duration: 2011 Feb 232011 Feb 25

Publication series

NameInternational Symposium on Wireless and Pervasive Computing, ISWPC 2011

Other

Other6th International Symposium on Wireless and Pervasive Computing, ISWPC 2011
CountryChina
CityHong Kong
Period11-02-2311-02-25

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Software

Fingerprint Dive into the research topics of 'A robust scheme in downlink synchronization and initial cell search for 3GPP LTE system'. Together they form a unique fingerprint.

Cite this