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An Efficient ICI Self-Cancellation Method with Frequency Offset and Phase Noise in OPDM Systems  

Park, Jeong-Hwan (한국과학기술원 전자전산학과 통신신호처리 연구실)
Kim, Hyung-Myung (한국과학기술원 전자전산학과 통신신호처리 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.2A, 2009 , pp. 155-163 More about this Journal
Abstract
OFDM System is a promising transmission technique due to its spectral efficiency But, a major disadvantage of the OFDM system is its sensitivity to frequency offset and phase noise that makes intercarrier interference (ICI), which degrades the system performance severely The ICI self-cancellation method has a good performance with frequency offset or phase noise. This paper proposed the N/2 spacing data-conjugate method that works well in large frequency offset and phase noise (normalized frequency offset=0.2-0.4, phase noise standard deviation=about lodes). Also, an efficiency ICI cancellation method using pilot was proposed. Simulation results confirm that performance of the proposed scheme is better than conventional schemes.
Keywords
ICI Self-cancellation; frequency offset; Phase noise; OFDM;
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