Accurate indoor wireless location with IR UWB systems a performance evaluation of joint receiver structures and TOA based mechanism

Impulse radio (IR) ultra wide-band (UWB) is one of the most promising wireless technologies to develop both indoor and outdoor location and tracking applications. Due to its high bandwidth and short duration pulses, UWB potentially allows a great accuracy in distance measurements based on time of arrival (TOA) estimations. The main objective of this paper is to compare and to provide a qualitative and quantitative evaluation of different TOA-based distance estimation mechanisms joint to receiver architectures proposed for UWB systems. This comparison has been done in terms of accuracy and the effect of characteristic parameters of the transmitted signal, propagation conditions and signal-to-noise ratio has been analyzed. With this purpose a simulation tool has been developed, where the different receiver architectures, estimation mechanisms and channel models proposed on 802.15.4a have been implemented.

[1]  Georgios B. Giannakis,et al.  Ultra-wideband communications: an idea whose time has come , 2004 .

[2]  Georgios B. Giannakis,et al.  Ultra-wideband communications: an idea whose time has come , 2003, 2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications - SPAWC 2003 (IEEE Cat. No.03EX689).

[3]  Liuqing Yang,et al.  Timing ultra-wideband signals with dirty templates , 2005, IEEE Transactions on Communications.

[4]  H. Vincent Poor,et al.  A two-step time of arrival estimation algorithm for impulse radio ultra wideband systems , 2005, 2005 13th European Signal Processing Conference.

[5]  Zafer Sahinoglu,et al.  Low Complexity TOA Estimation for Impulse Radio UWB Systems , 2005 .

[6]  I. Guvenc,et al.  TOA estimation for IR-UWB systems with different transceiver types , 2006, IEEE Transactions on Microwave Theory and Techniques.

[7]  Ismail Güvenç,et al.  Multiscale energy products for TOA estimation in IR-UWB systems , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[8]  Tadeusz A. Wysocki,et al.  Performance Comparison of UWB Hopping Codes in a Multi-User Rich Scattering Environment , 2006, 2006 IEEE 63rd Vehicular Technology Conference.

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

[10]  I. Guvenc,et al.  Threshold-based TOA estimation for impulse radio UWB systems , 2005, 2005 IEEE International Conference on Ultra-Wideband.

[11]  Brian M. Sadler,et al.  Analysis of Multiscale Products for Step Detection and Estimation , 1999, IEEE Trans. Inf. Theory.

[12]  Stéphane Mallat,et al.  Characterization of Signals from Multiscale Edges , 2011, IEEE Trans. Pattern Anal. Mach. Intell..

[13]  Tomaso Erseghe.  Time-Hopping Sequences Selection in UWB-Impulse-Radio Packet Networks , .