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Channel estimation in ECMA-368-based UWB systems with unknown interference

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Abstract

Ultra-wideband (UWB) is one of the fledging paradigms that the next generation of wireless personal area network (WPAN) is developing towards. With its appealing dimensions, UWB communication comes with a set of challenges of which channel estimation is prominent. In this article, we explore the problem of channel estimation in ECMA-368-based multiband orthogonal frequency division multiplexing (MB-OFDM) UWB system affected by unknown narrowband interference (NBI). We analytically show that the unknown NBI causes larger variance of a channel estimator. Thus, MB-OFDM UWB systems are supposed to experience significant performance degradation. To reduce this effect, we follow a new preamble-based channel estimation approach, where the interference power on each subcarrier is treated as a nuisance parameter which is averaged out from the corresponding likelihood function. The later is then optimized in an iterative manner according to the quasi-Newton algorithm. Furthermore, we address highly-accurate channel estimation in a time-variant channel and propose an iterative interpolation method. Simulation results indicate that our proposed approaches provide more precise estimation performances than those offered by conventional channel estimation methods.

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References

  1. Standard ECMA-368: high rate ultra wideband PHY and MAC standard (2nd ed). ECMA International, December 2008.

  2. Snow, C., Lampe, L., & Schober, R. (2009). Impact of WiMAX interference on MB-OFDM UWB systems: analysis and mitigation. IEEE Transactions on Communications, 57(9), 2818–2827.

    Article  Google Scholar 

  3. Islam, S. M. R., & Kwak, K. S. (2010). A comprehensive study of channel estimation for WBAN-based healthcare systems: feasibility of using multiband UWB. Journal of Medical Systems, doi:10.1007/s10916-010-9617-6. Published Online: 03 November 2010.

    Google Scholar 

  4. Li, Y., Molisch, A. F., & Zhang, J. (2004). Practical approaches to channel estimation and interference suppression for OFDM based UWB communications. In IEEE 6th CAS symposium on emerging technologies: mobile and wireless communications Shanghai, China, 2004.

    Google Scholar 

  5. Tsai, Y.-r., Wang, C.-C., & Li, X.-S. (2008). Adaptive channel estimation for MB-OFDM systems in multi-access interfering environments, In IEEE vehicular technology conference (VTC), Singapore, May 2008.

    Google Scholar 

  6. Hadaschik, N., Zakia, I., Ascheid, G., & Meyr, H. (2007). Joint narrowband interference detection and channel estimation for wideband OFDM. In Proceedings of the European wireless conference.

    Google Scholar 

  7. Islam, S. M. R., & Kwak, K. S. (2011). Preamble-based improved channel estimation for multiband UWB system in presence of interferences. Telecommunication Systems, doi:10.1007/s11235-011-9440-5. Published Online: 09 April 2011.

    Google Scholar 

  8. Islam, S. M. R., & Kwak, K. S. (2011). Zero padded suffix aided subspace-based narrowband interference detected adaptive channel estimation for MB-OFDM UWB systems. International Journal of the Physical Sciences, 6(1), 52–64.

    Google Scholar 

  9. Morelli, M., & Moretti, M. (2009). Channel estimation in OFDM systems with unknown interference. IEEE Transactions on Wireless Communications, 8(10), 5338–5347.

    Article  Google Scholar 

  10. Molisch, A., Foerster, J., & Pendergrass, M. (2003). Channel models for ultra-wideband personal area networks. IEEE Wireless Communications Magazine, 12 14–21.

    Article  Google Scholar 

  11. Muquet, B., Wang, Z., Ginnakis, G., de Courville, M., & Duhamel, P. (2002). Cyclic prefix or zero padding for wireless multicarrier transmission? IEEE Transactions on Communications, 50(12), 2136–2148.

    Article  Google Scholar 

  12. Shi, K., Zhou, Y., Kelleci, B., Fischer, T. W., Serpdin, E., & Karsilayn, A. I. (2007). Impacts of narrowband interference on OFDM-UWB receivers: analysis and mitigation. IEEE Transactions on Signal Processing, 55(3), 1118–1128.

    Article  Google Scholar 

  13. Caravalho, E. D., & Slock, D. T. (1997). Cramer-Rao bounds for semi-blind, blind, and training sequence based channel estimation, In First IEEE signal processing workshop on signal processing advances in wireless communications, Paris, France, April 1997.

    Google Scholar 

  14. Nocedal, J., & Wright, S. J. (1999). Numerical optimization. Springer series in operation research (Springer, Berlin).

    Book  Google Scholar 

  15. Liu, H., Zhong, H., Zhang, T., & Gong, Z. (2006). A quasi-Newton acceleration EM algorithm for OFDM channel estimation. Information Technology Journal, 5(4), 749–752.

    Article  Google Scholar 

  16. Nam, S. H., Yoon, J. S., & Song, H. K. (2008). EM-based low complexity channel estimation for OFDM system. IEEE Transactions on Consumer Electronics, 54(2).

  17. Morelli, M., & Mengali, U. (2001). A comparison of pilot-aided channel estimation methods for OFDM systems. IEEE Transactions on Signal Processing, 49, 3065–3073.

    Article  Google Scholar 

  18. IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs): Time variance for UWB wireless channels, November 2002.

  19. Li, Y., Minn, H., Jacobs, T., & Win, M. Z. (2008). Frequency offset estimation for MB-OFDM-based UWB systems. IEEE Transactions on Communications, 56(6), 968–979.

    Article  Google Scholar 

  20. Keijo, P., & Koi, V. (2007). Iterative interpolation method for multiband-OFDM channel estimation. In IEEE International conference on ultra-wideband (ICUWB), Singapore, September 2007.

    Google Scholar 

  21. Sanguinetti, L., Morelli, M., & Poor, H. V. (2010). Frame detection and timing acquisition for OFDM transmissions with unknown interference. IEEE Transactions on Wireless Communications, 9(3), 1226–1276.

    Article  Google Scholar 

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Authors and Affiliations

  1. Telecommunication Engineering Lab, Inha University, Incheon, 402-751, South Korea

    S. M. Riazul Islam, M. A. Ameen & Kyung Sup Kwak

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  1. S. M. Riazul Islam
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  2. M. A. Ameen
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  3. Kyung Sup Kwak
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Correspondence to Kyung Sup Kwak.

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Islam, S.M.R., Ameen, M.A. & Kwak, K.S. Channel estimation in ECMA-368-based UWB systems with unknown interference. Telecommun Syst 52, 1159–1169 (2013). https://doi.org/10.1007/s11235-011-9631-0

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  • DOI: https://doi.org/10.1007/s11235-011-9631-0

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