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Cramer-Rao bound for channel parameters in ultra-wide band based system

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4 Author(s)
Deleuze, A.-L. ; Signal & Image Process. Tech. Unity, Thales Commun., Colombes, France ; Martret, C.Le. ; Ciblat, P. ; Serpedin, E.

This work focuses on channel estimation in standard ultra-wide band (UWB) based system. We consider impulse radio scheme relying on a binary pulse position modulation as well as on a spread-spectrum time-hopping multiple access. We address the closed-form expressions of the (resp. modified) Cramer-Rao bound for the multipath channel parameters in data-aided (resp. nondata-aided) context. The derivations have been developed by assuming the multiple-access interference as an additive white Gaussian noise. Conversely the overlapping between signal echoes has been taken into account. Finally simplifications have been done by averaging the Fisher information matrix over the time-hopping random sequence as well as over the symbol random sequence.

Published in:

Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on

Date of Conference:

11-14 July 2004