Advertisement

Path Loss Model and Channel Capacity for UWB–MIMO Channel in Outdoor Environment

  • Ahmed M. Al-SammanEmail author
  • Tharek Abd Rahman
  • Marwan Hadri Azmi
  • Ibraheem Shayea
Article
  • 17 Downloads

Abstract

A demand for high speed wireless communication system has increased tremendously. Two approaches for fulfilling this demand are to use system with large bandwidth as proposed by ultra-wideband (UWB) systems, or by adopting multiple-input multiple-output (MIMO) antenna systems. This paper presents the path loss model and the capacity of UWB channels in outdoor environment for infostation application. The close in free space and floating intercept path loss models are used to investigate the power decay for the UWB channel. The capacity of the UWB channel is computed based on the measured time-domain data obtained from channel measurement. Comparison between the capacities of UWB single-input single-output (SISO), UWB single-input multiple-output (SIMO), UWB multiple-input single-output (MISO), and UWB–MIMO systems is conducted. The path loss exponent for the MIMO channel is comparable with free space path loss exponent of 2. Result shows an improvement at about 27 bps/Hz in channel capacity for 2 × 2 UWB–MIMO systems when compared to UWB–SISO systems. In addition, we also found that 1 × 2 UWB–SIMO systems achieved higher capacities than 2 × 1 UWB–MISO systems.

Keywords

UWB channel MIMO Outdoor Capacity Path loss 

Notes

Acknowledgements

The authors would like to acknowledge the MOHE Grant, UTM & VOTE NO. R.J13000.7809.4J209, Universiti Teknologi Malaysia. Also, we would like to acknowledge the funding from the Tabung Pusat Kecemerlangan Pengajian Tinggi (HICOE) of grant number A.J090601.5357.07085, Universiti Teknologi Malaysia.

References

  1. 1.
    Molisch, A. F. (2009). Ultra-wide-band propagation channels. Proceedings of the IEEE, 97, 353–371.  https://doi.org/10.1109/JPROC.2008.2008836.CrossRefGoogle Scholar
  2. 2.
    Al-Samman, A. M., & Rahman, T. A. (2016). Experimental characterization of multipath channels for ultra-wideband systems in indoor environment based on time dispersion parameters. Wireless Personal Communications.  https://doi.org/10.1007/s11277-016-3880-x.Google Scholar
  3. 3.
    Al-Samman, A. M., Rahman, T. A., & Nasir, J. (2015). Time dispersion characteristics for wideband channel in 28 GHz millimeter wave band for 5G cellular networks. In 2015 IEEE 11th international colloquium on signal processing and its applications (pp. 1–4). IEEE.  https://doi.org/10.1109/cspa.2015.7225607.
  4. 4.
    Yao, Y., Zheng, J., & Feng, Z. (2011). Channel capacity estimation in TDMS-based MIMO measurements. Tsinghua Science and Technology, 16, 371–376.  https://doi.org/10.1016/S1007-0214(11)70054-2.CrossRefGoogle Scholar
  5. 5.
    Kaltenberger, F., Kountouris, M., Gesbert, D., & Knopp, R. (2009). On the trade-off between feedback and capacity in measured MU–MIMO channels. IEEE Transactions on Wireless Communications, 8, 4866–4875.  https://doi.org/10.1109/TWC.2009.081670.CrossRefGoogle Scholar
  6. 6.
    Lee, J.-Y. (2010). UWB channel modeling in roadway and indoor parking environments. IEEE Transactions on Vehicular Technology, 59, 3171–3180.  https://doi.org/10.1109/TVT.2010.2044821.CrossRefGoogle Scholar
  7. 7.
    Nunoo, S., Chude-Okonkwo, U. A. K., Ngah, R., Al-Samman, A., & Onubogu, J. (2014). UWB channel measurement and data transfer analysis for multiuser Infostation applications. In 2014 IEEE 10th international colloquium on signal processing and its applications (pp. 139–144). IEEE.  https://doi.org/10.1109/cspa.2014.6805736.
  8. 8.
    Galluccio, L., Leonardi, A., Morabito, G., & Palazzo, S. (2008). Timely and energy-efficient communications in rural infostation systems. IEEE Wireless Communications, 15, 48–53.  https://doi.org/10.1109/MWC.2008.4547522.CrossRefGoogle Scholar
  9. 9.
    Rajappan, G., Acharya, J., Liu, H., Mandayam, N., Seskar, I., & Yates, R. (2006). Mobile infostation network technology. In R. M. Rao, S. A. Dianat, M. D. Zoltowski (Eds.), Proceedings of SPIE wireless sensing and processing, Orlando, Florida (pp. 62480M–62480M–9).  https://doi.org/10.1117/12.665982.
  10. 10.
    Lakkundi, V. (2006). Ultra wideband communications: history. Evolution and Emergence, Acta Polytechnica, 46, 18–20.Google Scholar
  11. 11.
    Gulliver, T. A. (n.d.). Performance and capacity of ultra-wideband transmission with biorthogonal pulse position modulation over multipath fading channels. In 2005 IEEE international conference on ultra-wideband (pp. 225–229). IEEE.  https://doi.org/10.1109/icu.2005.1569989.
  12. 12.
    Kaiser, T. (2008). On the evaluation of channel capacity of UWB indoor wireless systems. IEEE Transactions on Signal Processing, 56, 6106–6113.  https://doi.org/10.1109/TSP.2008.2005089.MathSciNetCrossRefzbMATHGoogle Scholar
  13. 13.
    Coulibaly, Y., Gilles, D., Nadir, H., & Dodji, A. (2013). Experimental characterization of the UWB channel for an underground mining vehicle. In 7th European conference on antennas and propagation (pp. 2331–2334).Google Scholar
  14. 14.
    Liao, S., Chiu, C., Chen, C., & Ho, M. (2013) Channel characteristics of MIMO–WLAN communications at 60 GHz for various corridors. EURASIP Journal on Wireless Communications and Networking 2013:96. CrossRefGoogle Scholar
  15. 15.
    Liao, S., Chen, H., Chiu, C., & Liu, C. (2011). Channel capacities of indoor MIMO–UWB transmission for different material partitions. Tamkang Journal of Science and Engineering, 14, 49–63.Google Scholar
  16. 16.
    Sit, Y. L., Reichardt, L., Liu, R., Liu, H., & Zwick, T. (2012). Maximum capacity antenna design for an indoor MIMO–UWB communication system. In ISAPE2012 (pp. 73–76). IEEE.  https://doi.org/10.1109/isape.2012.6408711.
  17. 17.
    Malik, W. Q., & Edwards, D. J. (2007). Measured MIMO capacity and diversity gain with spatial and polar arrays in ultrawideband channels. IEEE Transactions on Communications, 55, 2361–2370.  https://doi.org/10.1109/TCOMM.2007.910700.CrossRefGoogle Scholar
  18. 18.
    TIME DOMAIN®. (2012). Channel analysis tool (CAT) user guide, [Online], pp. 1–34. http://www.timedomain.com. Accessed Nov 2016.
  19. 19.
    Li, Z., Du, Z., Takahashi, M., Saito, K., & Ito, K. (2012). Reducing mutual coupling of MIMO antennas with parasitic elements for mobile terminals. IEEE Transactions on Antennas and Propagation, 60, 473–481.  https://doi.org/10.1109/TAP.2011.2173432.CrossRefGoogle Scholar
  20. 20.
    Al-Samman, A. M., Rahman, T. A., Nunoo, S., Chude-Okonkwo, Ua K, Ngah, R., Shaddad, R. Q., et al. (2015). Experimental characterization and analysis for ultra wideband outdoor channel. Wireless Personal Communications, 83, 3103–3118.  https://doi.org/10.1007/s11277-015-2585-x.CrossRefGoogle Scholar
  21. 21.
    Tsao, G., Iyamu, P., Petropoulakis, L., Atkinson, R., Andonovic, I., & Glover, I. a. (2012). Measurements of MIMO–UWB indoor channel. In 2012 International symposium on circuits and systems (pp. 1–6). IEEE.  https://doi.org/10.1109/issse.2012.6374327.
  22. 22.
    Richardson, P. C., Xiang, W., & Stark, W. (2006). Modeling of ultra-wideband channels within vehicles. IEEE Journal on Selected Areas in Communications, 24, 906–912.  https://doi.org/10.1109/jsac.2005.863882.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Ahmed M. Al-Samman
    • 1
    Email author
  • Tharek Abd Rahman
    • 1
  • Marwan Hadri Azmi
    • 1
  • Ibraheem Shayea
    • 1
  1. 1.Wireless Communication CentreUniversiti Teknologi Malaysia (UTM)SkudaiMalaysia

Personalised recommendations