Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Receiver Techniques for Ultra-wide-band Multiuser Systems over Fading Multipath Channels

  • Zhou, Xiaobo (Dept. of Electrical Engineering, Texas A&M University) ;
  • Wang, Xiaodong (Department of Electrical Engineering, Columbia University)
  • Published : 2003.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

We treat the problem of channel estimation and interference cancellation in multiuser ultra-wide-band (UWB) communication systems over multipath fading channels. The UWB system under consideration employs a random time-hopping impulse radio format. We develop a channel estimation method based on linear weighted algorithm. An iterative channel estimation and interference cancellation scheme is proposed to successively improve the receiver performance. We also consider systems employing multiple transmit and/or receive antennas. For systems with multiple receive antennas, we develop a diversity receiver for the wellseparated antennas. For systems with multiple transmit antennas, we propose to make use of Alamouti’s space-time transmission scheme, and develop the corresponding channel estimation and interference cancellation receiver techniques. Simulation results are provided to demonstrate the performance of various UWB receiver techniques developed in this paper.

Keywords

References

  1. D. Cassioli et at. 'Performance of low-complexity rake reception in a realistic UWB channel,' in Proc. . 2002, vol. 2, pp.763-767
  2. R.J.-M. Cramer, M.Z. Win, and R.A. Scholtz, 'Evaluation of an ultra wide-band propagation channel,'IEEE Trans. on Antennas and Propagation, vol. 50, no. 5, pp. 561-570, 2002 https://doi.org/10.1109/TAP.2002.1011221
  3. CJ. Le Martret and G.B. Giannakis, 'All-digital impulse radio for muvisi-resilient multi-user communications over frequency-selective multipath channels,' in Proc., MILCOM 2000, vol. 2, 2000, pp. 655-659
  4. F. Ramirez-Mireles, 'Performance of ultrawideband SSMA using time hopping and M-ary PPM,' IEEE J. Select. Areas Commun., vol. 19, no. 6,pp. 1186-1196, Jun. 2001 https://doi.org/10.1109/49.926374
  5. R. Scholb, 'Multiple access with time-hopping impulse modulation,' in Proc.. M1LC0M '93,1993. vol. 2, pp. 447-450
  6. G.D. Weeks, J.K. Townsend, and J.A. Freebersyser, 'Performance of hard decision detection for impulse radio,' in Proc. MILCOM '99,1999.vo1.2,pp. 1201-1206
  7. M.Z. Win and R.A. Scholtz, 'Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communica-tions,' IEEE Trans. Commun., vol. 48, no. 4, pp. 679 -689, Apr. 2000 https://doi.org/10.1109/26.843135
  8. P. Withington, II and L.W. Fullerton, 'An impulse radio communications system,' in Ultra-Wideband, Short-Pulse Electromaenetics, H.L. Bertoni et a1.,pp.113-120, 1993
  9. L. Zhao and A.M. Haimovich, 'Interference suppression in Ultra-wideband communications,' in Proc., Mar., 2001, pp., 759-763
  10. G. Durisi and G. Romano, 'Simulation analysis and performance evalu-ation of an UWB system in indoor multipath channel,' in Proc, 2002 pp.,255-258
  11. R.C. Qiu and I.T. Lu, 'Multipath resolving with frequency dependence for wide-band wireless channel modeling, IEEE Trans. Veh. Technol. , vol. 48, no. 1, pp. 273 -285, Jan. 1999 https://doi.org/10.1109/25.740106
  12. H. Meyer, M. Moeneclaey, and S. Fechtel, 'Digital communication reveivers: Synchronization, channel estimation and signal Processing', John Witey & Sons , 1998
  13. M.K. Varanasi and B. Aazhang, 'Multistage detection in asynchronous code-division multiple-access communications,' IEEE Trans. Commun., vo1.38,pp.509-519, Apr. 1990 https://doi.org/10.1109/26.52662
  14. S. Abeta, M. Sawahashi, and F. Adachi, 'Performance comparison be-tween time-multiplexed pilot channel and parallel pilot channel for co-herent Rake combining in DS-CDMA mobile radio,' IEICE Trans. Commun., vul. E81-B, no. 7,pp. 1417-1425, Jul. 1998
  15. G. Yue, X. Zhou, and X. Wang, 'Performance comparisons of channel estimation techniques in multipath fading CDMA,' IEEE Trans. Wireless Commun., in Press
  16. S. Alamouti, 'A simple transmit diversity technique for wireless commu nications,' IEEE J. Select. Areas Commun., vol. 16, no.8, pp. 1451-1458, Oct. 1998 https://doi.org/10.1109/49.730453
  17. J.K. Cavers, 'An analysis of pilot assisted modulation for Rayleigh fading fading channels.' IEEE Trans. Veh. Technol., vol. 40, pp. 689-693, Nov.1991
  18. S.C. Swales et al., 'The performance enhancement of mulibeam adap-tive base-station antennas for cellular land mobile radio systems,' IEEE Trans. Veh. Technol, vo1.39, no.l, pp.56-67, Feb. 1990 https://doi.org/10.1109/25.54956
  19. X. Wang and H.V. Poor, 'Space-time multiuser detection in multipath CDMA channels,' IEEE Trans. Signal Processing, vol. 47, no. 9, pp.2356-2374, Sept. 1999 https://doi.org/10.1109/78.782180