Share This Article:

UWB Channel Modeling Improvement in Indoor Line-of-Sight (LOS) Environments

Abstract Full-Text HTML Download Download as PDF (Size:755KB) PP. 870-876
DOI: 10.4236/ijcns.2011.311118    4,181 Downloads   8,074 Views   Citations

ABSTRACT

Channel measurement and modeling is an important issue when designing ultra wideband (UWB) communication systems. A Precise model of the channel response is inevitable for designing an ultra wideband telecommunication system. In this article signal propagation in indoor environment and LOS condition is evaluated and the appropriate model of this scenario is presented. Parameters such as the power delay profile, mean excess delay, delay spread, “NP10dB” are analyzed and simulated. Based on analysis results, the proposed model is presented. This model is based on Two-cluster approach but its average power delay profile is described with power function and cluster time of arrival is modeled by the modified exponential distribution. Finally UWB channel parameters of proposed model, Saleh and Valenzuela (S-V) and Two-cluster models are compared. Measurement and simulation results show that considerable improvement for mean excess delay, delay spread and “NP10dB” of proposed model comparing with S-V and Two-cluster model, this means the channel is better described, which mean the channel is described more precisely.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

V. Vakili, D. Abbasi-Moghadam and M. Yahyaabadi, "UWB Channel Modeling Improvement in Indoor Line-of-Sight (LOS) Environments," International Journal of Communications, Network and System Sciences, Vol. 3 No. 11, 2010, pp. 870-876. doi: 10.4236/ijcns.2011.311118.

References

[1] M. Z. Win and R. A. Scholtz, “Characterization of Ultra-Wide Band Width Wireless Indoor Communication Channel: A Communication Theoretical View,” IEEE JSAC, Vol. 20, No. 9, December 2002, pp. 1613-1627.
[2] Multiband OFDM Physical Layer Proposal for IEEE 802.15 Task Group 3a. http://www.ieee802.org/15/
[3] A. Saleh and R. Valenzuela, “A Statistical Model for Indoor Multipath Propagation,” IEEE Journal on Selected Areas in Communications, Vol. 5, No. 2, February 1987, pp. 128-137.
[4] S. Venkatesh and J. Ibrahim, “A New 2-Cluster Model for Indoor UWB Channel Measurement,” IEEE in Antenna and Propagation Society Symposium, Vol. 1, June 2004, pp. 946-949.
[5] Y. Wang, N. T. Zhang, Q. Y. Zhang and Z. Z. Zhang, “Characterizing Ultra-Wide Band Indoor Line-of-Sight Wireless Channel,” Elsevier Journal of Systems Engineering and Electronics, Vol. 18, No. 4, December 2007, pp. 673-678.
[6] http://ultra.usc.edu/uwb_database/
[7] D. Cassioli, M. Z. Win and A. F. Molisch, “The Ultra-Wide Bandwidth indoor Channel: From Statistical Model to Simulations,” IEEE Journal on Selected Areas in Communications, Vol. 20, No. 6, August 2002, pp. 1247-1257.
[8] Y. Wang and N. T. Zhang, “A New Multi-Template CLEAN Algorithm for UWB Channel Impulse Response Characterization,” IEEE Conference on Communication Technology, Guilin, November 2006, pp. 1-4.
[9] C. Buccella, M. Feliziani and G. Manzi, “Detection and Localization of Defects in Shielded Cables by Time-Domain Measurement with UWB Pulse Injection and Clean Algorithm Post Processing,” IEEE Transactions on Electromagnetic Compatibility, Vol. 46, No. 4, November 2004, pp. 597-605.
[10] J. H. Kim and Y. K. Yoon, “The Multipath Delay Spread Model for the LOS Case,” Antennas and Propagation Society International Symposium, San Diego, July 2008, pp. 1-4.
[11] R. G. Vaughan and N. L. Scott, “Super-Resolution of Pulsed Multipath Channels for Delay Spread Characterization,” IEEE Transactions on Communications, March 1995, Vol. 47, No. 3, pp. 343-347.
[12] Y. F. Chen, “Statistical Properties of IEEE UWB Channel Models and Their Application,” IEEE 19th International Symposium on Indoor and Mobile Radio Communications, Cannes, September 2008, pp. 1-5.
[13] J. Wout, D. Jeffrey, V. Leen and M. Luc. “Statistical Analysis of the Power Delay Profile,” Elsevier International Journal of Communications, In Press, Available online 7, July 2009.
[14] J. Foerster, “Channel Modeling Sub-Committee Report Final,” IEEE P802.15-02/368r5-SG3a, 2002.
[15] V. Marshall and G. Skitek, “Electromagnetic Concept and Applications,” Prentice-Hall International, Inc., 1990.
[16] P. R. Barnes and F. M. Tesche, “On the Direct Calculation of Transient Plane Wave Reflected from a Finitely Conducting Half Space,” IEEE Transaction on Electromagnetic Compatibility, Vol. 33, No. 2, May 1991, pp. 90-96.

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.