Reduced complexity carrier frequency offset estimation for OFDM systems

Defeng Huang, Khaled Letaief, Jianhua Lu

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

5 Citations (Scopus)

Abstract

In broadband wireless communications, extensive research has been devoted to Orthogonal Frequency Division Multiplexing (OFDM) due to its ability in mitigating the multi-path effects. In OFDM, however, carrier frequency offsets (CFO) induce the loss of orthogonality among the sub-carriers and this results in significant performance degradation. In this paper, we propose a reduced complexity algorithm for CFO estimation with the aid of null sub-carriers. Using only one training OFDM symbol with N sub-carriers, the estimation range of the proposed scheme can be N/2 times larger than conventional CFO estimation schemes. As a result, the precision of the oscillators can be significantly reduced, thus, enabling low cost implementation. This paper will also investigate null sub-carrier allocations for the proposed scheme. It will be shown that the allocations should be based upon some specific binary sequences such as the extended m-sequences proposed in this paper.

Original languageEnglish
Title of host publication2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1411-1415
Number of pages5
Volume3
ISBN (Print)0780383443
Publication statusPublished - 2004
Externally publishedYes
Event2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 - Atlanta, GA, United States
Duration: 21 Mar 200425 Mar 2004

Other

Other2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
CountryUnited States
CityAtlanta, GA
Period21/3/0425/3/04

Fingerprint

Orthogonal frequency division multiplexing
Binary sequences
Degradation
Communication
Costs

Keywords

  • Carrier frequency offset
  • Maximum Likelihood estimation
  • OFDM

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Huang, D., Letaief, K., & Lu, J. (2004). Reduced complexity carrier frequency offset estimation for OFDM systems. In 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 (Vol. 3, pp. 1411-1415). Institute of Electrical and Electronics Engineers Inc..

Reduced complexity carrier frequency offset estimation for OFDM systems. / Huang, Defeng; Letaief, Khaled; Lu, Jianhua.

2004 IEEE Wireless Communications and Networking Conference, WCNC 2004. Vol. 3 Institute of Electrical and Electronics Engineers Inc., 2004. p. 1411-1415.

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

Huang, D, Letaief, K & Lu, J 2004, Reduced complexity carrier frequency offset estimation for OFDM systems. in 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004. vol. 3, Institute of Electrical and Electronics Engineers Inc., pp. 1411-1415, 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004, Atlanta, GA, United States, 21/3/04.
Huang D, Letaief K, Lu J. Reduced complexity carrier frequency offset estimation for OFDM systems. In 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004. Vol. 3. Institute of Electrical and Electronics Engineers Inc. 2004. p. 1411-1415
Huang, Defeng ; Letaief, Khaled ; Lu, Jianhua. / Reduced complexity carrier frequency offset estimation for OFDM systems. 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004. Vol. 3 Institute of Electrical and Electronics Engineers Inc., 2004. pp. 1411-1415
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