Wireless Personal Communications

, Volume 54, Issue 2, pp 307–320 | Cite as

Measurement and Analysis of Ultra-Wideband Time Reversal for Indoor Propagation Channels

Article

Abstract

The experiments of time reversal (TR) technique with ultra-wideband (UWB) signals are conducted in indoor propagation channel by using time-domain technique. The UWB propagation channel response of a typical indoor environment is measured and time reversal technique is applied for signal transmission. The characteristics of the TR scheme for different propagation scenarios, line-of-sight (LOS) and non-LOS with different wideband receiving antennas are evaluated. The measurement results of signals focusing gain, temporal sidelobes and average signal energy for different propagation scenarios are presented. The spectral analysis of TR-UWB signals is conducted and an inherent bandwidth limit of the classical TR-UWB scheme is observed. To overcome the bandwidth restrictions, novel design architecture is proposed. The new design adjusts the TR signal by a way to support ultra-wide bandwidth and provides better matching to the UWB spectral mask with better temporal focusing features.

Keywords

Modified time reversal Multipath propagation Spectral analysis Time reversal Ultra wideband 

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References

  1. 1.
    Choi J.D., Stark W.E. (2002) Performance of ultra-wideband communications with suboptimal receiver in multipath channels. IEEE Journal of Selected Areas Communication 20(9): 1754–1766CrossRefGoogle Scholar
  2. 2.
    Qiu R.C., Liu H.P., Shen X. (2005) Ultra-wideband for multiple access. IEEE Communications Magazine 43(2): 80–87CrossRefGoogle Scholar
  3. 3.
    Zhao, S., Liu, H., Tian, Z. (2004). A decision feedback autocorrelation receiver for pulsed ultra- wideband systems. In Proceedings of the IEEE Rawcon ’04 (pp. 251–254).Google Scholar
  4. 4.
    Fink, M. (1997). Time reversed acoustics. Physics Today, 34–40.Google Scholar
  5. 5.
    Derode A. et al (2003) Taking advantages of multiple scattering to communicate with time-reversal antennas. Physical Review Letters 90(1): 014301CrossRefGoogle Scholar
  6. 6.
    Lerosey G. et al (2004) Time reversal of electromagnetic waves. Physical Review Letters 92(19): 193904CrossRefGoogle Scholar
  7. 7.
    Nguyen H.T., Kovacs I.Z., Eggers P. (2006) A time reversal transmission approach for multi-user UWB communications. IEEE Transactions on Antennas and Propagations 54(11): 3216–3224CrossRefGoogle Scholar
  8. 8.
    Kyritsi P., Papanicolau G., Eggers P., Oprea A. (2004) MISO time reversal and delay-spread compression for FWA channels at 5 GHz. IEEE Antennas and Wireless Propagation Letters 3: 96–99CrossRefGoogle Scholar
  9. 9.
    Kyritsi, P., Papanicolau, G., Eggers, P., & Oprea, A. (2004). Time reversal techniques for wireless communications. In Proceedings of the 60th Vehicular Technology Conference.Google Scholar
  10. 10.
    Nguyen H.T., Anderson J.B., Pedersen G.F. (2005) The potential of time reversal techniques in multiple element antenna systems. IEEE Communications Letters 9(1): 40–42CrossRefGoogle Scholar
  11. 11.
    Oestges, C., Hansen, J., Emami, M., Paulraj, A., & Papanicolaou, G. (October, 2004). Time reversal techniques for broadband wireless communications. In European Microwave Week.Google Scholar
  12. 12.
    Oestges C., Kim A.D., Papanicolaou G., Paulraj A. (2005) Characterization of space-time focusing in time-reversed random fields. IEEE Transactions on Antennas and Propagation 53(1): 283–293CrossRefMathSciNetGoogle Scholar
  13. 13.
    Qiu R.C., Zhou C., Guo N., Zhang J.Q. (2006) Time reversal with MISO for ultrawideband communications: experimental results. IEEE Antennas and Wireless Propagation Letters 5(1): 269–273CrossRefGoogle Scholar
  14. 14.
    Nguyen H.T., Anderson J.B., Pedersen G.F., Kyritsi P., Eggers P.C.F. (2006) Time reversal in wireless communications: a measurement-based investigation. IEEE Transactions on Wireless Communications 5(8): 2242–2252CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC. 2009

Authors and Affiliations

  1. 1.Rikshospitalet UniversityOsloNorway

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