On the SNR-optimal null subcarrier placement for blind carrier offset estimation in OFDM systems

Yan Wu, Samir Attallah, J.W.M. Bergmans

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

1 Citaat (Scopus)

Samenvatting

A blind carrier frequency offset (CFO) estimation algorithm using the null subcarriers for orthogonal frequency diversity multiplexing (OFDM) systems was proposed in [1]. The optimal null subcarrier placement that minimizes the Cramer-Rao bound (CRB) was studied in [3]. In this paper, we study the optimal null subcarrier placement from an SNR maximization point of view. We first derive the relationship between the SNR of the CFO estimation and the placement of null subcarriers. Based on that, we formulate the optimization problem and find the optimal solution using convex optimization for small CFO values. We also discuss the optimality of the null subcarrier placement in practical OFDM systems where guard bands are required at both ends of the spectrum.

Originele taal-2Engels
TitelIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Aantal pagina's5
ISBN van geprinte versie1-4244-0356-1
DOI's
StatusGepubliceerd - 1 dec 2006
EvenementIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, Verenigde Staten van Amerika
Duur: 27 nov 20061 dec 2006

Congres

CongresIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
LandVerenigde Staten van Amerika
StadSan Francisco, CA
Periode27/11/061/12/06

    Vingerafdruk

Citeer dit

Wu, Y., Attallah, S., & Bergmans, J. W. M. (2006). On the SNR-optimal null subcarrier placement for blind carrier offset estimation in OFDM systems. In IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference [4151202] Piscataway: Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/GLOCOM.2006.572