Article details

Title: Performance Evaluation of Impulse Based UWB System in AWGN and Indoor Multipath Channel
Author(s): Rizwan Akbar   Emanuel Rădoi   Stephane Azou         

Abstract: In this paper, a general architecture of impulse based UWB (Ultra-Wide Band) system is analyzed and the performance of Time-Hopping Pulse Shape Modulation (TH-PSM) is assessed in AWGN (Additive White Gaussian Noise), as well as in standard IEEE 802.15.3a indoor multipath channel. UWB pulses based on B-splines are used for the analysis, which not only preserve orthogonality, but also utilize the available spectrum efficiently, respecting the FCC mask as well. Afterwards, the measurements that form the basis for IEEE standard channel model are discussed. Rake receiver is used for the evaluation of bit error rate. The performance of all rake (A-rake), selective rake (S-rake), and partial rake (P-rake) is evaluated using maximum ratio combining (MRC), assuming perfect knowledge of the channel state. Finally, based on simulation results, conclusions are drawn about the system performance.

Keywords: UWB-IR, indoor multipath channel, rake receiver.

[1] M. MATSUO, M. KAMADA, H. HABUCHI – Design of UWB Pulses Based on B-Splines, Proc. of the IEEE International Symposium on Circuits and Systems, ISCAS 2005, Vol. 6, pp. 5425-5428, Kobe, Japan, May 23-26, 2005
[2] M. MATSUO, M. KAMADA, H. HABUCHI – Design of UWB Pulses by Spline Approximation, Proc. of the IEEE Wireless Communications and Networking Conference, WCNC 2005, Vol. 2, pp. 764-769, New Orleans, LA, Mar. 13-17, 2005
[3] Y. KIM, B. JANG, C. SHIN, B.F. WOMACK – Orthonormal Pulses for High Data Rate Communications in Indoor UWB Systems, IEEE Communications Letters, Vol. 9, No. 5, pp. 405-407, May 2005
[4] M. KAMADA, K. TORAICHI, R.E. KALMAN – A Smooth Signal Generator Based on Quadratic B-Spline Functions, IEEE Transactions on Signal Processing, Vol. 43, No. 5, pp. 1252-1255, May 1995
[5] Z. MICHALEWICZ – A Perspective on Evolutionary Computation, In Xin Yao (Ed.), “Progress in Evolutionary Computation: AI ’93 and AI ’94 Workshops on Evolutionary Computation, Melbourne, Victoria, Australia, Nov. 16, 1993, Armidale, NSW, Australia, Nov. 21-22, 1994: Selected Papers”, pp. 73-89, Springer, New York, NY, 1995
[6] L. YANG, G.B. GIANNAKIS – Ultra-Wideband Communications: An Idea Whose Time Has Come, IEEE Signal Processing Magazine, Vol. 21, No. 6, pp. 26-54, Nov. 2004
[7] J.R. FOERSTER, M. PENDERGRASS, A.F. MOLISCH – A Channel Model for Ultra Wideband Indoor Communication, Proc. of the 6th International Symposium on Wireless Personal Multimedia Communications, WPMC 2003, Yokosuka, Japan, Oct. 19-22, 2003
[8] D. CASSIOLI, M.Z. WIN, F. VATALARO, A.F. MOLISCH – Low Complexity Rake Receivers in Ultra-Wideband Channels, IEEE Transactions on Wireless Communications, Vol. 6, No. 4, pp. 1265-1275, Apr. 2007
[9] I. OPPERMANN, M. HÄMÄLÄINEN, J. IINATTI (Eds.) – UWB: Theory and Applications, John Willey & Sons, Chichester, England, 2004
[10] S. MAJHI, A.S. MADHUKUMAR, A.B. PREMKUMAR, F. CHIN – Modulation Schemes Based on Orthogonal Pulses for Time Hopping Ultra Wideband Radio Systems, Proc. of the IEEE International Conference on Communications, ICC’07, pp. 4185-4190, Glasgow, Scotland, Jun. 24-28, 2007
[11] P. SAAD, C. BOTTERON, R. MERZ, P.A. FARINE – Performance Comparison of UWB Impulse-Based Multiple Access Schemes in Indoor Multipath Channels, Proc. of the 5th IEEE Workshop on Positioning, Navigation and Communication, WPNC 2008, pp. 89-94, Hanover, Germany, Mar. 27, 2008
[12] G. DURISI, S. BENEDETTO – Performance of Coherent and Non-Coherent Receivers for UWB Communications, Proc. of the IEEE International Conference on Communications, ICC 2004, Vol. 6, pp. 3429-3433, Paris, France, Jun. 20-24, 2004