Applicability of UWB Double Directional Propagation Modeling for Evaluating UWB Transmission Performance

This paper investigates the applicability of deterministic ultra wideband (UWB) propagation modeling for evaluating UWB system performances. The modeling explores the wave propagation characteristics on both transmitting and receiving antenna sides, which is known as the double directional modeling. In evaluating the applicability, bit error probability (BEP) performances were derived using two kinds of channel impulse responses: 1) raw data which were measured by channel sounding campaign and 2) reconstructed data from the propagation modeling results. In the BEP simulation, the direct sequence UWB system was considered. Comparison of the BEP performances from two kinds of channels revealed that the concept of the double directional modeling was capable of evaluating BEP performances accurately. However, it was also found that the limitation of our double directional modeling approach based on the model-based ray path extraction method resulted in the limited capability in modeling the total received power. As a consequence, fading statistics of the reconstructed channels were different from the measured data, ending up with less accuracy to predict BEP performances depending on the data rate. Finally, possible solutions to improve the double directional propagation modeling were suggested.

[1]  J. Keignart,et al.  UWB SIMO channel measurements and simulations , 2006, IEEE Transactions on Microwave Theory and Techniques.

[2]  Visa Koivunen,et al.  Stochastic Maximum Likelihood Estimation of Angle- and Delay-Domain Propagation Parameters , 2005, 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications.

[3]  J. Foerster,et al.  Channel modeling sub-committee report final , 2002 .

[4]  Reiner S. Thomä,et al.  Capacity of MIMO systems based on measured wireless channels , 2002, IEEE J. Sel. Areas Commun..

[5]  Kiyoshi Hamaguchi,et al.  Measurement-Based Performance Evaluation of a 26GHz Band UWB Communication System , 2006, IEEE Vehicular Technology Conference.

[6]  Jun-ichi Takada,et al.  A parametric UWB propagation channel estimation and its performance validation in an anechoic chamber , 2006, IEEE Transactions on Microwave Theory and Techniques.

[7]  Rodney G. Vaughan,et al.  Channels, Propagation and Antennas for Mobile Communications , 2003 .

[8]  Takehiko Kobayashi,et al.  Development of an Omnidirectional and Low-VSWR Ultra Wideband Antenna , 2006, Int. J. Wirel. Opt. Commun..

[9]  Takada Jun-ichi,et al.  Applicability of UWB Double Directional Propagation Modeling for Evaluating UWB Transmission Performance , 2006 .

[10]  J. Takada,et al.  Cluster Properties Investigated From a Series of Ultrawideband Double Directional Propagation Measurements in Home Environments , 2006, IEEE Transactions on Antennas and Propagation.

[11]  Iwao Nishiyama,et al.  UWB Testbed for Evaluating Various UWB Systems and Waveforms , 2004 .

[12]  Moe Z. Win,et al.  Characterization of ultra-wide bandwidth wireless indoor channels: a communication-theoretic view , 2002, IEEE J. Sel. Areas Commun..

[13]  Jun-ichi Takada,et al.  Overview of Research, Development, Standardization, and Regulation Activities in NICT UWB Project , 2006, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[14]  Andreas F. Molisch,et al.  The double-directional radio channel , 2001 .

[15]  Jun-ichi Takada,et al.  Double Directional Ultra Wideband Channel Characterization in a Line-of-Sight Home Environment , 2005, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[16]  A. Molisch,et al.  IEEE 802.15.4a channel model-final report , 2004 .

[17]  G. Sommerkorn,et al.  Multidimensional high-resolution channel sounding in mobile radio , 2004, Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510).

[18]  Ernst Bonek,et al.  3-D double-directional radio channel characterization for urban macrocellular applications , 2003 .