Complexity optimized CP length pre-decision metric for cell searcher in the downlink of 3GPP LTE system

Young Bum Kim, Kyung Hi Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

In the downlink of 3GPP LTE system, primary synchronization signal (PSS) and secondary synchronization signal (SSS) sequences are used for initial cell search and synchronization. The user equipment (UE) detects slot timing, frequency offset, and cell ID by PSS in the time domain. After Fast Fourier Transform (FFT), it detects frame timing, cell group ID, and cyclic prefix (CP) length by using SSS in the frequency domain. But in 3GPP LTE system, there are two kinds of CP length, so we operate FFT twice with different CP length. In this paper, we propose a CP length pre-decision metric which is able to reduce the arithmetic complexity by half at most, with negligible performance degradation.

Original languageEnglish
Title of host publication2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages895-899
Number of pages5
ISBN (Print)9781424451234
DOIs
StatePublished - 2009
Event2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009 - Tokyo, Japan
Duration: 13 Sep 200916 Sep 2009

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Conference

Conference2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
Country/TerritoryJapan
CityTokyo
Period13/09/0916/09/09

Keywords

  • 3GPP LTE
  • CP length pre-decision
  • Cell searcher
  • Extended CP
  • Normal CP

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