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

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

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

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages5
ISBN (Print)1-4244-0356-1
DOIs
Publication statusPublished - 1 Dec 2006
EventIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, United States
Duration: 27 Nov 20061 Dec 2006

Conference

ConferenceIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
CountryUnited States
CitySan Francisco, CA
Period27/11/061/12/06

Fingerprint Dive into the research topics of 'On the SNR-optimal null subcarrier placement for blind carrier offset estimation in OFDM systems'. Together they form a unique fingerprint.

  • Cite this

    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