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Fixed-point blind adaptive multiuser detection algorithm for IR UWB systems in multipath channel

  • Published:
Journal of Electronics (China)

Abstract

Using the hypothesis that data transmitted by different users are statistically independent of each other, this paper proposes a fixed-point blind adaptive multiuser detection algorithm for Time-Hopping (TH) Impulse Radio (IR) Ultra Wide Band (UWB) systems in multipath channel, which is based on Independent Component Analysis (ICA) idea. The proposed algorithm employs maximizing negentropy criterion to separate the data packets of different users. Then the user characteristic sequences are utilized to identify the data packet order of the desired user. This algorithm only needs the desired user’s characteristic sequence instead of channel information, power information and time-hoping code of any user. Due to using hypothesis of statistical independence among users, the proposed algorithm has the outstanding Bit Error Rate (BER) performance and the excellent ability of near-far resistance. Simulation results demonstrate that this algorithm has the performance close to that of Maximum-Likelihood (ML) algorithm and is a suboptimum blind adaptive multiuser detection algorithm of excellent near-far resistance and low complexity.

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References

  1. Jaewoon Kim, Sekwon Kim, Youngjin Park, et al.. A selective detection scheme based on pulse repetition for noncoherent UWB systems. Consumer Communications and Networking Conference (CCNC’ 2008), Las Vegas, Nevada, USA, Jan. 10–12, 2008, 91–94.

  2. Qi Zhang and Chun Sum Ng. Differentially-encoded di-symbol time-division multiuser impulse radio in UWB channel. IEEE Transactions on Communications, 56(2008)4, 608–618.

    Article  Google Scholar 

  3. G. S. Biradar, S. N. Merchant, and U. B. Desai. Constrained blind adaptive multiuser detector for DS-CDMA UWB in multipath channels. IEEE 10th International Symposium on Spread Spectrum Techniques and Applications (ISSSTA’ 2008), Bologna, Italy, Aug. 25–28, 2008, 200–204.

  4. Zhi Li, Hong Ma, and Yongbing Mei. Blind multiuser detection for UWB systems based on generalized sidelobe canceller. International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM’ 2006), Wuhan, China, Sept. 22–24, 2006, 1–4.

  5. N. Boubaker and K. Letaief. A low complexity MMSE-RAKE receiver in a realistic UWB channel and in the presence of NBI. Wireless Communications and Networking (WCNC’ 2003), New Orleans, Louisiana, USA, Mar. 16–20, 2003, 233–237.

  6. Weiyu Xu, Zhenqi Chen, Zihua Guo, et al.. Reduced-complexity ML multi-user detection for dispersive UWB signal based on combined stack and viterbi trellis search. Radio and Wireless Conference, Atlanta, GA, USA, Sept. 19–22, 2004, 259–262.

  7. Y. C. Yoon and R. Kohno. Optimum multi-user detection in ultra-wideband (UWB) multiple-access communication systems. IEEE International Conference on Communications (ICC’ 2002), Anchorage, Alaska, USA, Apr. 28–May 2, 2002, 812–816.

  8. Chia-Chang Hu, Hsuan-Yu Lin, Tsung-Hsien Liu, et al.. Time-hopping UWB multiuser detection using adaptive multistage matrix Wiener filtering schemes. IEEE International Conference on Communications (ICC’ 2007), Glasgow, Scotland, Jun. 24–28, 2007, 2540–2544.

  9. Nazlı Güney, Hakan Delic, and Mutlu Koca. Robust multiuser detection for impulse radio in non-Gaussian UWB channels. IEEE International Conference on Acoustics, Speech and Signal Processing Proceedings (ICASSP’ 2006), Toulouse, France, May 14–19, 2006, 4–6.

  10. Malay Gupta and Balu Santhanam. Prior ICA based blind multiuser detection in DS-CDMA systems. Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, Pacific Grove, USA, Nov. 7–10, 2004, 2155–2159.

  11. T. Lang, R. W. Liu, V. C. Soon, et al.. Indeterminacy and identifiability of blind identification. IEEE Transactions on Circuits and Systems, 38(1991)5, 499–509.

    Article  MATH  Google Scholar 

  12. Arun D. Sathish and Sudharman K. Jayaweera. Iterative Low-complexity multiuser detection and decoding for coded UWB systems. IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications, Manaus, Amazon, Brazil, Aug. 28–31, 2006, 173–177.

  13. E. Fishler and H. V. Poor. Low-complexity multiuser detectors for time-hopping impulse-radio systems. IEEE Transactions on Signal Processing, 52(2004)9, 2561–2567.

    Article  MathSciNet  Google Scholar 

  14. Aapo Hyvärinen, Juha Karhunen, and Erkki Oja. Independent Component Analysis. New York, John Wiley & Sons, Inc., 2001, 166–182.

    Book  Google Scholar 

  15. A. Hyvärinen. New approximations of differential entropy for independent component analysis and projection pursuit. In Advances in Neural Information Processing Systems, 10(1998), 273–279.

    Google Scholar 

  16. Aapo Hyvärinen. Fast and robust fixed-point algorithms for independent component analysis. IEEE Transactions on Neural Networks, 10(1999)3, 626–634.

    Article  Google Scholar 

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Authors and Affiliations

  1. College of Telecommunications & Information Engineering, Nanjing University of Posts & Telecommunications, Nanjing, 210003, China

    Feng Wang & Chengqi Xu

  2. Nanjing University of Posts & Telecommunications, Mail Box No. 67, 66 Xinmofan Road, Nanjing, 210003, China

    Feng Wang

Authors
  1. Feng Wang
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  2. Chengqi Xu
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Correspondence to Feng Wang.

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Communication author: Wang Feng, born in 1978, male, Ph.D..

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Wang, F., Xu, C. Fixed-point blind adaptive multiuser detection algorithm for IR UWB systems in multipath channel. J. Electron.(China) 27, 157–165 (2010). https://doi.org/10.1007/s11767-010-0303-0

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  • DOI: https://doi.org/10.1007/s11767-010-0303-0

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