DocumentCode :
1806737
Title :
Cramer-Rao Lower Bound for Non-coherent TOA Estimation with Impulse Signal
Author :
Jie Liu ; Liu, Jie ; Zheng, Lin
Author_Institution :
Guilin Univ. of Electron. Technol., Guilin, China
Volume :
1
fYear :
2009
fDate :
18-20 Aug. 2009
Firstpage :
754
Lastpage :
757
Abstract :
The non-coherent time-of-arrival (TOA) estimations are applied in impulse location for its simplicity. However, the multipath propagation of the narrow pulse results in complicated performance analysis. By fitting the output envelope of energy detection into a exponential decay, we approximately deduce the closed-form Cramer-Rao low bound (CRLB) of TOA estimation. Simulations with non-coherent TOA algorithms, such as threshold crossing (TC) and maximum energy selection (MES), validate the analysis. Furthermore, the integration window and multipath delay spread in ultra-wideband channel are considered to obtain a referable bound.
Keywords :
channel estimation; multipath channels; probability; radiowave propagation; signal detection; time-of-arrival estimation; ultra wideband communication; wireless channels; CRLB; MES; TC; UWB ranging; closed-form Cramer-Rao lower bound; complicated performance analysis; energy detection; envelope fitting; exponential decay; impulse radio signal; integration window; maximum energy selection; multipath delay spread; multipath propagation; narrow pulse signal; noncoherent TOA estimation algorithm; probability density function; threshold crossing; time-of-arrival estimation; ultra-wideband channel; AWGN; Algorithm design and analysis; Analytical models; Delay effects; Envelope detectors; Information security; Performance analysis; Portable media players; Time of arrival estimation; Ultra wideband technology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Assurance and Security, 2009. IAS '09. Fifth International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-0-7695-3744-3
Type :
conf
DOI :
10.1109/IAS.2009.205
Filename :
5283387
Link To Document :
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