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Phase Noise Compensation in OFDM Communication System by STFBC Method  

Li Yingshan (Dept. of Electronic Engineering, Chungbuk National University)
Ryu Heung-Gyoon (Dept. of Electronic Engineering, Chungbuk National University)
Jeong YoungHo (Mobile Multimedia Broadcasting System Team, Digital Broadcasting Research Division, ETRI)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.10, 2005 , pp. 1043-1049 More about this Journal
Abstract
In OFDM system suitable for high capacity high speed broadband transmission, ICI caused by phase noise degrades system performance seriously by destroying the orthogonality among subcarriers. In this paper, a new STFBC method combining ICI self cancellation scheme and antenna, time, frequency diversity is studied to reduce ICI effectively. CPE and ICI are analyzed by the phase noise linear approximation method in the proposed STFBC OFDM system. CIR, PICR and BER are discussed to compare the system performance degraded by phase noise of PLL. As results, STFBC method significantly reduces ICI. Furthermore, the SCI that usually happens in the traditional STBC, SFBC diversity coding method can be easily avoided.
Keywords
Phase Noise; OFDM; STFBC; ICI; CIR; PICR;
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