Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/71467
Title: Polynomial rooting based maximum likelihood carrier frequency offset estimation for OFDM systems
Authors: Feifei, G.
Nallanathan, A. 
Issue Date: 2006
Source: Feifei, G.,Nallanathan, A. (2006). Polynomial rooting based maximum likelihood carrier frequency offset estimation for OFDM systems. IEEE Wireless Communications and Networking Conference, WCNC 2 : 1046-1049. ScholarBank@NUS Repository.
Abstract: The non-zero carrier frequency offset (CFO) must be compensated for orthogonal frequency-division multiplexing (OFDM) communications since it may destroy the orthogonality among subcarriers and cause severe degradation in system performance. Several blind CFO estimation methods were developed by exploiting the virtual carriers in practical OFDM transmissions, including a highly efficient approach by rooting a polynomial. However, this rooting method is suboptimal when the noise is present. In this work, we propose an improved polynomial rooting method that is shown to be the maximum likelihood (ML) estimator for both the noisy and the noise-free case. The simulation results clearly show the effectiveness and the better performance of the newly proposed method. © 2006 IEEE.
Source Title: IEEE Wireless Communications and Networking Conference, WCNC
URI: http://scholarbank.nus.edu.sg/handle/10635/71467
ISBN: 1424402700
ISSN: 15253511
Appears in Collections:Staff Publications

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