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A Design of OFDM Signal for Reducing the ICI Caused by Phase Noise  

Li Yingshan (Dept. of Electronic and Research Institute of Computer, Information & Communication, Chungbuk National University)
Hieu Nguyen Thanh (Dept. of Electronic and Research Institute of Computer, Information & Communication, Chungbuk National University)
Ryu Heung-Gyoon (Dept. of Electronic and Research Institute of Computer, Information & Communication, Chungbuk National University)
Jeong Young-Hoo (Broadcasting System Research Group, Digital Broadcasting Research Division, ETRI)
Hahm Young-Kown (Broadcasting System Research Group, Digital Broadcasting Research Division, ETRI)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.3, 2005 , pp. 319-326 More about this Journal
Abstract
In the multi-carrier OFDM communication system for the high data rate transmission, the ICI caused by phase noise of transceiver local oscillator may degrade the system performance seriously. In this paper, a new ICI self-cancellation scheme using data-conjugate method is proposed to reduce the ICI caused by phase noise effectively. Then, the CPE, ICI and CIR are derived by the phase noise linear approximation method. Besides, to analyze the efficiency of system performance improvement, the proposed method is compared with the original OFDM and the conventional ICI self-cancellation scheme using data-conversion method. As results, the performance degradation caused by ICI can be mitigated effectively in the OFDM system with ICI self-cancellation scheme, and more performance improvement can be achieved by the proposed ICI self-cancellation scheme using data-conjugate method than the conventional ICI self-cancellation scheme using data-conversion method when phase noise exists.
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