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Performance analysis of sign-based pre-FFT synchronization in OFDM systems

Publiceringsår: 2010
Språk: Engelska
Publikation/Tidskrift/Serie: IEEE Vehicular Technology Conference
Dokumenttyp: Konferensbidrag
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.


This paper treats the feasibility to use only the sign bit of the in-phase and quadrature components when estimating time and frequency in OFDM systems. Using only the sign bit is shown to result in a frequency dependent bias, which can be easily compensated. The approach is evaluated for LTE and

DVB-H, where the estimation is performed using the cyclic prefix, and for WLAN 802.11g, where the estimation is done using the short training field (STF). The performance is compared to a floating point implementation, and it is also compared to what is believed to be reasonable requirements for initial time and frequency estimation.


  • Electrical Engineering, Electronic Engineering, Information Engineering
  • OFDM
  • DVB-H
  • Synchronization
  • LTE
  • WLAN


IEEE Vehicular Technology Conference (VTC Spring), 2010
  • Radiosystem: Multibase (EU, VÖ/OE)
  • Digital ASIC-lup-obsolete
  • Elektronikkonstruktion-lup-obsolete
  • ISSN: 1550-2252
  • ISBN: 978-1-4244-2519-8

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