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A Simultaneous Compensation for the CPE and ICI in the OFDM System  

Li Ying-Shan (Dept. of Electronic Engineering and Research Institute of Computer, Information & Communication, Chungbuk National University)
Ryu Heung-Gyoon (Dept. of Electronic Engineering and Research Institute of Computer, Information & Communication, Chungbuk National University)
Jeong Young-Ho (Broadcasting System Department, Radio & Broadcasting Lab., ETRI)
Hahm Young-Kown (Broadcasting System Department, Radio & Broadcasting Lab., ETRI)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.12, 2004 , pp. 1152-1160 More about this Journal
Abstract
OFDM technique was adopted as the standard of IEEE 802.1 la and it has been widely used for wireless LAN, European DVB/DAB system, Korean DMB system. In the standard of IEEE 802.11a the data packet is composed of two parts, preamble and data. Preamble is composed of short pilots and long pilots, which are used for synchronization and estimation of frequency offset and channel. We can also compensate phase noise effect in the transceiver by using above pilots. The phase noise is more complicate than frequency offset and seriously affects system performance. In this paper, we newly propose CPE and ICI simultaneous compensation method to compensate phase noise generated by transceiver oscillator and compare with previous studies. As results, phase noise effect can be significantly compensated by CPE cancellation method, PNS algorithm and our proposed CPE and ICI compensation method. Especially, the proposed CPE and ICI compensation method can achieve the best BER performance compared with original OFDM, CPE cancellation method and PNS algorithm.
Keywords
Phase Noise; OFDM; CPE; ICI;
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