Frequency offset correction for OFDM using a blind adaptive decorrelator in a time-variant selective Rayleigh fading channel

Document Type

Article

Publication Date

1-1-1999

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is believed to be an important technique for future high-speed wireline and wireless communications. One of the major disadvantages of such a multi-carrier modulated system is the sensitivity of its performance to a frequency offset. The frequency offset can result from a doppler shift due to mobile movement as well as from a carrier frequency synchronization error. Such a frequency offset causes a loss of the carriers' orthogonality, and hence Inter Carrier Interference (ICI). In this paper, we propose to use a blind adaptive decorrelator to correct for the effects of the frequency offset. As no training sequence is required there is no loss in bandwidth efficiency. Simulation results for time-variant frequency selective Rayleigh fading channels are presented.

Identifier

0032630254 (Scopus)

ISBN

[0780354354]

Publication Title

IEEE Vts 50th Vehicular Technology Conference Vtc 1999 Fall

ISSN

07400551

First Page

1281

Last Page

1285

Volume

2

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