TY - GEN
T1 - A simplified blind carrier frequency offset estimation algorithm based on the power of zero-subcarriers for CO-OFDM systems
AU - Du, Xinwei
AU - Yu, Changyuan
AU - Kam, Pooi Yuen
N1 - Funding Information:
Fig. 3: The estimation error variance vs. SNR, with the CFO of 5 GHz. 4. Conclusion In this paper, we propose a simplified blind CFO estimation algorithm that utilizes only three test values to estimate CFO which is simple and easy to implement. By taking the power average through several OFDM symbols, the MSZSP method can obtain a more accurate result. The simulation results verify the effectiveness of our proposed algorithms, and its robustness to the laser phase noise. Acknowledgement The authors would like to gratefully acknowledge the financial support of Grant 61571316 and 61971372 from NSFC, and HK RGC GRF 15200718. References 1. L. Wu, X. D. Zhang, P. S. Li and Y. T. Su,“A blind CFO estimator based on smoothing power spectrum for OFDM systems,” IEEE Trans. Commun. 57(7), 1924–1927 (2009). 2. Y.-J. Huang and S.-W. Wei, “Modified guard band power detection for coarse carrier frequency offset recovery in OFDM system,” Wireless Personal Commun. 45(2), 163–173 (2008). 3. F. Wu, T. Chen, W. Li and T. Lin, “Modified guard band power detection for coarse carrier frequency offset recovery in OFDM system,” in Proceedings of the 2014 International Conference on Network Security and Communication Engineering (NSCE 2014), CRC Press 2015, pp. 277. 4. F. Gao and A. Nallanathan, “Blind maximum likelihood CFO estimation for OFDM systems via polynomial rooting,” IEEE Sig. Process. Lett. 13(2), 73–76 (2006). 5. T. M. Schmidl and D. C. Cox, “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Comm. 45(12), 1613–1621 (1997). 6. J.-J. Beek, M. Sandell and P. O. Borjesson, “ML estimation of time and frequency offset in OFDM systems,” IEEE Trans. Sig. Process. 45(7), 1800–1805 (1997). 7. X. Du, J. Zhang, C. Yu, and P.-Y. Kam, , “Blind carrier frequency offset estimation for coherent optical OFDM systems,” in Signal Processing in Photonic Communications, Optical Society of America, 2016, paper SpW2G–3. 8. W. Shieh and I. Djordjevic, OFDM for optical communications. (Academic Press, 2009).
Publisher Copyright:
© OSA 2020, © 2020 The Author(s)
PY - 2020/10
Y1 - 2020/10
N2 - A simplified b lind C FO e stimation a lgorithm i s p roposed f or CO-OFDM systems based on the power of zero-subcarriers, which models the cost function as a cosine function, then easily estimating CFO by calculating three test functions.
AB - A simplified b lind C FO e stimation a lgorithm i s p roposed f or CO-OFDM systems based on the power of zero-subcarriers, which models the cost function as a cosine function, then easily estimating CFO by calculating three test functions.
KW - Blind equalization
KW - Cosine transforms
KW - Cost functions
KW - Frequency allocation
KW - Frequency estimation
KW - Optical communication
KW - Orthogonal frequency division multiplexing
KW - Photonics
UR - http://www.scopus.com/inward/record.url?scp=85102182415&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:85102182415
T3 - Optics InfoBase Conference Papers
BT - Asia Communications and Photonics Conference, ACPC 2020
PB - OSA - The Optical Society
T2 - 2020 Asia Communications and Photonics Conference, ACPC 2020/International Conference on Information Photonics and Optical Communications, IPOC 2020
Y2 - 24 October 2020 through 27 October 2020
ER -