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Simple and efficient space-time channel and DOA estimation techniques in TD-SCDMA systems

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Journal of Electronics (China)

Abstract

In this paper, a simple method is presented for multi-user space-time channel estimation in Time Division-Synchronized Code Division Multiple Access (TD-SCDMA) systems. The method is based on a specific midamble assignment strategy, which results in a cyclic Toeplitz midamble-matrix in the linear equation of the received data vectors. A Fast Fourier Transform (FFT)-based algorithm is used to obtain the estimate of the uplink multi-user space-time channels. Furthermore, the estimated space-time channel is applied to the identification of multi-paths for each user, and Direction Of Arrival (DOA) estimation for each path is carried out by using the extracted spatial signature vector. Aside from the simplicity in computation, the proposed direction of arrival estimation method can effectively resolve multi-paths regardless of the correlation and angle separations of the multi-paths.

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References

  1. J. J. Blanz, A. Pauthanassiou, M. Haardt, I. Furio, P. W. Baier. Smart antennas for combined DOA and joint channel estimation in time-slotted CDMA moble communication systems with joint detection. IEEE Trans. on Vehicular Technology, 49(2000)2, 293–306.

    Article  Google Scholar 

  2. S. Lohan. Channel estimation in spread spectrum systems. Report of Telecommunications Laboratory, Tampere University of Technology, April 14, 2000.

  3. 3GPP, Physical channels and mapping of transport channels onto physical channels (TDD), TS 25.221, 2002, v. 4.4.0.

  4. G. H. Golub, C. F. Van Loan. Matrix Computations. 3ed, Baltimore and London, The John Hopkins University Press, 1996, chapter 4.

    MATH  Google Scholar 

  5. 3GPP, Inclusion of HSDPA into TS25.102. TSG-RAN Working Group 4 (Radio) Meeting #23, Gyeongju, South Korea, 13th–17th May 2002, R4-020875.

  6. K. I. Pederson, P. E. Megenson, H. Fleury. Stochastic model of the temporal and azimuthal dispersion seen at the base station in outdoor propagation environments. IEEE Trans. on Vehicular Technology, 49(2002)2, 437–447.

    Article  Google Scholar 

  7. Motorola. System level channel model, 3GPP TSG RAN WG1, April 9–12, 2002, TSGR#25(02)0613.

  8. C. P. Mathews, M. D. Zoltowski. Eigenstructure techniques for 2-D angle estimation with uniform circular arrays. IEEE Trans. on SP, 42(1994)9, 2395–2407.

    Article  Google Scholar 

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Author information

Authors and Affiliations

  1. School of Information Engineering, Wuhan University of Science and Technology, Wuhan, 430070, China

    Li Ping’an Ph.D. (male, professor) & Ma Ning

  2. Wuhan University of Science and Engineering, Wuhan, 430073, China

    Ma Ning

Authors
  1. Li Ping’an Ph.D.
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  2. Ma Ning
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Corresponding author

Correspondence to Li Ping’an Ph.D..

Additional information

Supported by the Natural Foundation of Hubei Province, China (No.2005ABA224).

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Li, P., Ma, N. Simple and efficient space-time channel and DOA estimation techniques in TD-SCDMA systems. J. of Electron.(China) 23, 671–674 (2006). https://doi.org/10.1007/s11767-004-0256-2

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  • DOI: https://doi.org/10.1007/s11767-004-0256-2

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