A New Data Conjugate ICI Self Cancellation for OFDM System
DOI:
https://doi.org/10.18486/ijcsnt/1.1.002Keywords:
OFDM, ICI, CFO, Data Conjugate, Self CancellationAbstract
The available frequency spectrum is scarce, so for high data rate services bandwidth utilization must be efficient. It should be characterized by significantly enhancing the spectral efficiency in order to increases the speed of operation and network capacity. Hence OFDM has been proposed which provides high spectral efficiency and robustness against multi-path interference. The main limitation of OFDM which restricts its performance is inter carrier interference (ICI). ICI occurs because of loss of orthogonality between sub carriers. The main causes of orthogonality lost are Doppler shift and carrier frequency offset (CFO). In this paper, a new data conjugate ICI self cancellation method is proposed for OFDM system. The proposed method is compared with weighted conjugate transformation WCT) ICI self cancellation method in terms of CIR and BER. The simulations are performed in AWGN channel under BPSK and QPSK digital modulation. Convolution coding of code rate 2/3 is also applied. The results and simulations show that the proposed method is better than the WCT method with and without convolution coding. Also results show that the proposed method is robust against frequency.
References
W. G. Jeon, K. H. Chang, and Y. S. Cho, “An Equalization Technique for Orthogonal Frequency- Division Multiplexing Systems in Time-Variant Multipath Channels”, IEEE Transaction on Communication, Vol. 47, No.1, Jan. 1999, pp. 27–32. DOI: https://doi.org/10.1109/26.747810
J. Di, and C. Li, “Improved Nyquist Windows for Reduction of ICI in OFDM Systems”, 4th International Symposium on MAPE, Nov. 2011, pp. 438–441. DOI: https://doi.org/10.1109/MAPE.2011.6156293
Y. Zhao and S.G. haggman, “Inter carrier interference self-cancellation scheme for OFDM mobile communication systems”, IEEE Transaction on Communication, Vol. 49, No. 7, July 2001, pp. 1185–1191. DOI: https://doi.org/10.1109/26.935159
Y. Fu and C.C. Ko, “A new ICI self-cancellation scheme for OFDM systems based on a generalized signal mapper”, Proceedings 5th wireless Personal Multimedia Communications, 2002, pp. 995– 999. DOI: https://doi.org/10.1109/WPMC.2002.1088327
Y-H Peng, “Performance Analysis of a New ICI-Self Cancellation-Scheme in OFDM Systems”, IEEE Transaction on Consumer Electronics, Vol.53, No.4, 2007, pp. 1333–1338. DOI: https://doi.org/10.1109/TCE.2007.4429221
H. G. Ryu and Y. Li, J. S. Park, “An Improved ICI Reduction Method in OFDM Communication System”, IEEE Transaction on Broadcasting, Vol.51, No.3, Sep. 2005, pp. 395–400. DOI: https://doi.org/10.1109/TBC.2005.851091
Q. Shi, Y. Fang and M. Wang, “A novel ICI self-cancellation scheme for OFDM systems”, in IEEE WiCom, Sep. 2005, pp. 1–4. DOI: https://doi.org/10.1109/WICOM.2009.5302543
H. Zhou and Y-F Huang, “A Maximum Likelihood Fine Timing Estimation for Wireless OFDM Systems”, IEEE Transaction on Broadcasting, Vol. 55, No. 1, Mar. 2009, pp. 31–41. DOI: https://doi.org/10.1109/TBC.2008.2007457
Q. Shi, “ICI Mitigation for OFDM Using PEKF”, IEEE Signal Processing Letters, vol. 17, No.12, Dec. 2010, pp. 981–984. DOI: https://doi.org/10.1109/LSP.2010.2081978
E. L madnay and Rizk, “Modified Correlative Coding for Frequency Offset Mitigation in OFDM Systems”, International Conference on Computer Technology and Development, vol. 1, Nov. 2009, pp. 112–115. DOI: https://doi.org/10.1109/ICCTD.2009.146
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Copyright (c) 2026 Abhijeet Bishnu, Anjana Jain, Anurag Shrivastava (Author)
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