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Frequency Offset Tracking for OFDM Systems via Scattered Pilots and Virtual Carriers

Cui, Tao and Gao, Feifei and Nallanathan, A. (2007) Frequency Offset Tracking for OFDM Systems via Scattered Pilots and Virtual Carriers. In: 2007 IEEE International Conference on Communications. IEEE International Conference on Communications. IEEE , Piscataway, NJ, pp. 5120-5125. ISBN 978-1-4244-0352-3.

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In this paper, we propose a new carrier frequency offset (CFO) tracking algorithm for orthogonal frequency division multiplexing (OFDM) systems. Assuming that the channel remains constant during two consecutive OFDM blocks, a CFO estimation algorithm is proposed based on the limited number of pilots in each OFDM block. Identifiability of this pilot based algorithm is fully discussed under the noise free environment. A weighted algorithm is then developed by considering both pilot carriers and virtual carriers. The asymptotic mean square error (MSE) of the proposed algorithm is provided, and simulation results clearly show the performance improvement of the proposed algorithm over the existing methods.

Item Type:Book Section
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Additional Information:© 2007 IEEE.
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INSPEC Accession Number9875535
Series Name:IEEE International Conference on Communications
Record Number:CaltechAUTHORS:20100827-141528018
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19691
Deposited By: Tony Diaz
Deposited On:30 Aug 2010 23:07
Last Modified:08 Nov 2021 23:54

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