Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2008.06a
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- Pages.239-240
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- 2008
Frequency Offset Estimation in OFDMA Uplink System Using Low Cross-correlation Property of PN Sequences
OFDMA 상향 링크 시스템에서 PN 시퀀스의 낮은 Cross correlation 특성을 이용한 주파수 오차 추정
- Min, Hyun-Kee (Dept. of Electrical and Electronic Eng., Yonsei Univ) ;
- Kim, Seok-Joong (Dept. of Electrical and Electronic Eng., Yonsei Univ) ;
- Bang, Keuk-Joon (Induk Institute of Technology) ;
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Hong, Dae-Sik
(Dept. of Electrical and Electronic Eng., Yonsei Univ)
- Published : 2008.06.18
Abstract
A new frequency offset estimator using low cross-property of PN sequences is proposed in the orthogonal frequency division multiple access (OFDMA) uplink systems. Simulation results show that the proposed estimator improves the mean square error (MSE) performance compared to conventional estimator [2] where each user have both different timing offset and different frequency offset. In addition, the MSE performance is improved as the length of PN sequence increases.
Keywords