A Novel Frequency Offset Estimator over Frequency Selective Fading Channels by Using Correlative Coding

Zhigang CHEN  Taiyi ZHANG  Feng LIU  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.2   pp.535-540
Publication Date: 2005/02/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.2.535
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
orthogonal frequency division multiplexing (OFDM),  correlative coding,  carrier frequency offset (CFO),  intercarrier interference (ICI),  

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A new data-aided carrier frequency offset (CFO) estimation technique is presented for correlative coded OFDM systems in the presence of strong multipath. Different from traditional data-aided estimation techniques, the technique estimates CFO by detecting amplitude of pilots rather than their phase shift and removes effects on CFO estimation due to intercarrier interference by an iterative compensation method. A theoretical analysis of its performance has been derived and simulation results comparing the new technique with a traditional data-aided estimation technique are presented.