GML ToA Estimation Based on Low Complexity UWB Energy Detection

Energy detection receiver is one of the most interesting solution for non-coherent low data rate and low complexity UWB systems. In order to keep the complexity of the receiver structure low the same approach should be used also for ToA (time of arrival) estimation purposes. In this paper, after showing that a generalized maximum likelihood estimator for ToA is a sliding window energy based estimator, an improved version of it that uses partial channel state information is proposed in order to improve the accuracy of the estimation overcoming the hardware limitation related to the minimum integration time of the integration circuit and to the available number of integrators

[1]  A. Rabbachin,et al.  Synchronization analysis for UWB systems with a low-complexity energy collection receiver , 2004, 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS 2004 (IEEE Cat. No.04EX812).

[2]  Moe Z. Win,et al.  Ultrawide bandwidth transmitted-reference signaling , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[3]  Jean-Benoît Pierrot,et al.  Joint distributed synchronization and positioning in UWB ad hoc networks using TOA , 2006, IEEE Transactions on Microwave Theory and Techniques.

[4]  S. Al-Jazzar,et al.  New algorithms for NLOS Identification , 2005 .

[5]  H.V. Poor,et al.  Nonparametric nonline-of-sight identification , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[6]  U. Mengali,et al.  Low complexity synchronization for UWB noncoherent receivers , 2005, 2005 IEEE 61st Vehicular Technology Conference.

[7]  W. Hirt,et al.  Robust noncoherent receiver exploiting UWB channel properties , 2004, 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS 2004 (IEEE Cat. No.04EX812).

[8]  Moe Z. Win,et al.  Range Estimation in UWB Realistic Environments , 2006, 2006 IEEE International Conference on Communications.

[9]  I. Guvenc,et al.  TOA estimation with different IR-UWB transceiver types , 2005, 2005 IEEE International Conference on Ultra-Wideband.

[10]  Robert A. Scholtz,et al.  Ranging in a dense multipath environment using an UWB radio link , 2002, IEEE J. Sel. Areas Commun..

[11]  G.B. Giannakis,et al.  Localization via ultra-wideband radios: a look at positioning aspects for future sensor networks , 2005, IEEE Signal Processing Magazine.