Abstract
Orthogonal frequency division multiplexing (OFDM), a very promising technique that is leading the evolution in wireless mobile communication to sideline the bandwidth scarcity issue in spectrum allocation, is severely affected by the undesirable effects of the frequency offset error, which generates inter carrier interference (ICI) due to the Doppler shift and local oscillator frequency synchronization errors. There are many ICI cancellation techniques available in the literature, such as self-cancellation (SC), maximum likelihood estimation (MLE), and windowing, but they present a tradeoff between bandwidth redundancy and system complexity. In this study, a new energy-efficient, bandwidth-effective technique is proposed to mitigate ICI through cyclic prefix (CP) reuse at the receiver end. Unlike SC and MLE where the whole OFDM symbol data is transmitted in duplicate to create redundancy at the transmitter end, the proposed technique uses the CP data (which is only 20% of the total symbol bandwidth) to estimate the channel, and it produces similar results with a huge bandwidth saving. The simulation results show that the proposed technique has a significant improvement in error performance, and a comparative analysis demonstrates the substantial improvement in energy efficiency with high bandwidth gain. Therefore, it outperforms the legacy ICI cancellation schemes under consideration.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chouhan, S., Sharma, D., 2014. Comparison of ICI cancellation schemes for BER performance improvement of OFDM system. Int. Rev. Appl. Eng. Res., 4(5): 437–444.
Dai, L.L., Wang, J.T., Wang, Z.C., et al., 2013. Spectrum- and energy-efficient OFDM based on simultaneous multichannel reconstruction. IEEE Trans. Signal Process., 61(23): 6047–6059. https://doi.org/10.1109/TSP.2013.2282920
Himaza, K., Kumar, M.R., 2015. A survey of ICI reduction techniques in OFDM system. Int. J. Adv. Technol. Innov. Res., 7(7): 1111–1113.
Hou, W.K., Wang, X.B., Liu, G.J., 2012. ML detection with successive group interference cancellation for interleaved OFDMA uplink. IEEE Commun. Lett., 16(1): 34–36. https://doi.org/10.1109/LCOMM.2011.110711.111195
Hwang, T., Yang, C.Y., Wu, G., et al., 2009. OFDM and its wireless applications: a survey. IEEE Trans. Veh. Technol., 58(4): 1673–1694. https://doi.org/10.1109/TVT.2008.2004555
Kumar, N., Kaur, G., Sohi, B.S., 2015. Comparative analysis of various inter-carrier interference cancellation methods. Int. J. Wirel. Microw. Technol., 5(3): 18–32. https://doi.org/10.5815/ijwmt.2015.03.02
Li, B., Zheng, W., Ren, S.B., et al., 2012. Optimal selection of cyclic-prefix and sub-carrier for OFDM signal in mobile satellite communications channel. Int. Conf. on Computer and Information Application, p.558–561. https://doi.org/10.2991/iccia.2012.135
Li, G.Y., Xu, Z.K., Xiong, C., et al., 2011. Energy-efficient wireless communications: tutorial, survey, and open issues. IEEE Wirel. Commun., 18(6): 28–35. https://doi.org/10.1109/MWC.2011.6108331
Morelli, M., Kuo, C.C.J., Pun, M.O., 2007. Synchronization techniques for orthogonal frequency division multiple access (OFDMA): a tutorial review. Proc. IEEE, 95(7): 1394–1427. https://doi.org/10.1109/JPROC.2007.897979
Muquet, B., Wang, Z.D., Giannakis, G.B., et al., 2002. Cyclic prefixing or zero padding for wireless multicarrier transmissions? IEEE Trans. Commun., 50(12): 2136–2148. https://doi.org/10.1109/TCOMM.2002.806518
Savitha, H.M., Kulkarni, M., 2012. A novel hybrid scheme using MLE with pulse shaping for ICI cancellation in OFDM systems. Int. Conf. on Computer Communication and Informatics, p.1–5. https://doi.org/10.1109/ICCCI.2012.6158844
Singh, H., Sarowa, S., Agrawal, S., 2015. A novel hybrid ICI cancellation technique for OFDM optimization. Int. Conf. on Recent Advances in Engineering and Computational Sciences, p.1–5. https://doi.org/10.1109/RAECS.2015.7453374
Zhang, L., Hong, Z.H., Thibault, L., et al., 2011. On practical inter-carrier interference cancellation techniques. IEEE Conf. on Vehicle Technology, p.1–5. https://doi.org/10.1109/VETECF.2011.6093094
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sarowa, S., Singh, H., Agrawal, S. et al. A novel energy-efficient ICI cancellation technique for bandwidth improvements through cyclic prefix reuse in an OFDM system. Frontiers Inf Technol Electronic Eng 18, 1892–1899 (2017). https://doi.org/10.1631/FITEE.1601333
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1631/FITEE.1601333
Key words
- Orthogonal frequency division multiplexing (OFDM)
- Fast Fourier transform (FFT)
- Cyclic prefix (CP)
- Inter symbol interference (ISI)
- Inter carrier interference (ICI)
- Maximum likelihood estimation (MLE)