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Channel Estimation Method with Improved Performance for the UMTS-TDD Mode

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Abstract

Channel estimation is an essential building block for UTRA-TDD high performance receivers. Once the performance of the channel estimator algorithm proposed by 3GPP is highly dependent on the time spreading between consecutive multi-path components, a Successive Multi-path channel Estimation Technique (SMET) that improves the time resolution is proposed in this paper. A SMET based maximum likelihood approach for vectorial channel estimation, to include the estimation of the direction-of-arrival, is also proposed. This algorithm solves efficiently the complex problem of DOA estimation of multiple users in a multi path propagation environment even when the number of required DOA's exceeds the number of antenna array elements. Another property of the proposed algorithm is its ability to resolve signals from different users arriving from the same direction. This is due to processing in both time and space dimensions. The performance of these algorithms is assessed by resorting to simulations in multi-path environments using the UMTS-TDD specifications, and also by comparing the rms estimation errors against the Crámer-Rao Bound. The effect of imperfect channel estimation on the performance of RAKE and Hard-Decision Parallel Interference Canceller receivers is also analysed. The results show that a good performance can be achieved with SMET, from low to high values of Eb/n0.

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References

  1. M. Haardt, A. Klein, R. Koehn, S. Oestreich, M. Purat, V. Sommer and T. Ulrich, “The TD-CDMA Basead UTRA TDD mode”, IEEE Journal on Selected Areas in Communication, Vol. 18, pp. 1375–1385, August 2000.

    Article  Google Scholar 

  2. S. Verdú, Multiuser Detection, Cambridge University Press, New York, 1998.

    Google Scholar 

  3. A. Naguib, Adaptive Antennas for CDMA Wireless Networks, Ph.D. Thesis, Standford University, August 1996.

  4. E. Murray, “Performance of Network-Based Mobile Location Techniques within the 3GPP UTRA-TDD standards”, presented at the Proc. IEE 3G Mobile Comm. Technologies Conf., London, May 2002. Author: Please provide the university location (city, state, country).

  5. 3GPP TS 25.221, “Physical Channels and Mapping of Transport Channels onto Physical Channels (TDD)”.

  6. J. C. Liberti and T. S. Rappaport, “Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications”, Prentice-Hall, Englewood Cliffs, NJ, 1999.

    Google Scholar 

  7. 3GPP TS 25.201, “Physical Layer-General Description”.

  8. J. G. Proakis, Digital Communications, 3rd ed. New York: McGraw-Hill, New York, 1995.

    Google Scholar 

  9. InterDigital Communications Corporation, “Complexity analysis of the multi-user channel estimation in TDD”, 3GPP TSG-RAN WG1 #5, 1999.

  10. ETSI, “Universal Mobile Telecommunications System, Selection Procedures for the Choice of Radio Transmission Technologies of the UMTS”, TR 101112, pp. 42–43, 1998.

  11. P. Patel and J. Holtzmann, “Analysis of a simple successive interference cancellation scheme in DS/CDMA systems”, IEEE Journal on Selected Areas of Communication, June 1994.

  12. S. Lasaulce, P. Loubaton, E. Moulines, and S. Buljore, “Training-Based Channel Estimation and De-Noising for the UMTS-TDD mode”, presented at IEEE VTC Fall, Oct. 2001.

  13. P. Marques, A. Gameiro and J. Fernandes, “Channel Estimation with Array Processing for the Uplink of UMTS-TDD”, presented at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Lisboa, Sept. 2002.

  14. K. AlMidfa, “Performance Evaluation of Direction-of-Arrival (DOA) Estimation Algorithms for Mobile Communication Systems”, presented at the IEEE Vehicular Tech. Conf., Tokyo 2000.

  15. M. D. Zoltowski, M. Haardt and C. P. Mathews, “Close-Form 2-D Angle Estimation with Rectangular Arrays in Element Space or Beamspace via Unitary ESPRIT,” IEEE Transactions on Signal Processing, Vol. 44, pp. 316–328, Feb. 1996.

    Article  Google Scholar 

  16. A. Veen, M. Vanderveen and A. J. Paulraj, “Joint Angle and Delay Estimation Using Shift-Invariances Proprities”, IEEE Signal Processing Letters, Vol. 4, No. 5, pp. 142–145, May 1997.

    Article  Google Scholar 

  17. C. Sengupta, J. Cavallaro and B. Aazhang, “On Multipath Channel Estimation for CDMA Systems Using Multiple Sensors”, IEEE Transactions on Communication, Vol. 49, No. 3, pp. 543–553, March 2001.

    Article  Google Scholar 

  18. E. Ertin, U. Mitra and S. Siwamogsatham, “Maximum-likelihood-Based Multipath Channel Estimation for Code-Division Multiple-Access Systems”, IEEE Transactions on Communication, Vol. 49, No 2, pp. 290–302, Feb. 2001.

    Article  Google Scholar 

  19. Lucent, Nokia, Siemens and Ericsson, “A Standardized Set of MIMO Radio Propagation Channels”, 3GPP TSG-RAN WG1 #23, 2001.

  20. L.M. Correia (ed.), “Wireless Flexible Personalised Communications”, Wiley, New York, 2001.

    Google Scholar 

  21. R. Buehrer, N. Mendonza and B. Woerner, “A Simulation Comparison of Multiuser Receivers for Cellular CDMA”, IEEE Transactions on Vehicular Technology, Vol. 49, No. 4, pp. 1065–1085, July 2000.

    Article  Google Scholar 

  22. A. Silva, P. Pinho, P. Marques, A. Gameiro and J. Fernandes, “Performance and Sensitivity Evaluation of Multisensor Parallel Interference Cancellation for the UMTS-TDD Uplink”, presented at the Proc. IST Mobile Comm. Summit, Barcelona, Spain, Sept. 2001.

  23. J. Caffery, “Wireless location in CDMA cellular radio systems”, Kluwer Academic, 2000.

  24. B. Tomiuk and N. Beaulieu, “General Forms for Maximal Ratio Diversity with Weighting Errors”, IEEE Transactions on Communication, Vol. 47, No 4, April 1999.

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Authors and Affiliations

  1. Instituto de Telecomunicações/DETUA, Universidade de Aveiro, 3810, Aveiro, Portugal

    Paulo Marques, Atilio Gameiro & Jose Fernandes

  2. Escola Superior de Tecnologia, Instituto Politécnico de Castelo Branco, 6000 Castelo, Branco, Portugal

    Paulo Marques

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  1. Paulo Marques
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  2. Atilio Gameiro
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  3. Jose Fernandes
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Correspondence to Paulo Marques.

Additional information

Paulo Marques received his Licenciatura (five years course) and M.S.E.E degrees from Department of Electronic and Telecommunications Engineering, University of Aveiro, Portugal, in 1995 and 1998, respectively. He is currently working toward the Ph.D. degree at the same University. He has worked in the area of parameters estimation for 3G and 4G systems. In 1998, he joined Escola Superior de Tecnologia-Instituto Politécnico de Castelo Branco, where he is auxiliar Professor. He is also involved on the European R&D project 4MORE (4G MC-CDMA Multiple Antenna System on Chip for Radio Enhancements). His current research interest includes channel estimation, channel modeling, multi-user detection and MIMO systems.

Atílio Gameiro received his Licenciatura (five years course) and his PhD from the University of Aveiro in 1985 and 1993 respectively. He is currently a Professor in the Department of Electronics and Telecommunications of the University of Aveiro, and a researcher at the Instituto de Telecomunicações – Pólo de Aveiro, where he is head of group. His main interests lie in signal processing techniques for digital communications and communication protocols. Within this research line he has done work for optical and mobile communications, either at the theoretical and experimental level, and has published over 100 technical papers in International Journals and conferences. His current research activities involve space-time-frequency algorithms for the broadband component of 4G systems and joint design of layers 1 and 2.

José Fernandes received his degree and Ph.D. from University of Aveiro, Portugal, both in Electrical Engineering, in 1990 and 1997, respectively. Just after his graduation he joined the Department of Electrical Engineering of the same University as a researcher, where he became an assistant professor in 1997. In 1994 he joined the Institute of Telecommunications where he performed most of his research work. Since September 2000 he is with European Commission, DG Information Society, where he works in the field of Mobile, Satellite and Personal Communications. He has been participating in several national and European research projects, as well as in COST actions. He has published more than 60 technical papers and is a member of IEEE.

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Marques, P., Gameiro, A. & Fernandes, J. Channel Estimation Method with Improved Performance for the UMTS-TDD Mode. Wireless Pers Commun 37, 1–21 (2006). https://doi.org/10.1007/s11277-006-1079-2

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  • DOI: https://doi.org/10.1007/s11277-006-1079-2

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