Synchronization, TOA and position estimation for low-complexity LDR UWB devices

Author

Cheong, Paul ; Rabbachin, Alberto ; Montillet, Jean-Philippe ; Yu, Kegen ; Oppermann, Ian

Author_Institution

Cente for Wireless Commun., Oulu Univ., Finland

fYear

2005

fDate

5-8 Sept. 2005

Firstpage

480

Lastpage

484

Abstract

The paper provides an evaluation of a non-coherent UWB system, which is suitable for low complexity, cost and data rate UWB wireless sensor networks with positioning capability. Synchronization and time of arrival (TOA) estimation is performed using a non-coherent energy collection method. Coarse and fine synchronization are performed to identify the energy clusters and refine the energy collection window respectively. The effect of the integration window size is evaluated for both TOA estimation and position estimation. Direct method (DM) and Davidon-Fletcher-Powell (DFP) algorithms are implemented for position estimation. The result shows the possibility of attaining sub-meter performance using a low complexity and cost device.

Keywords

computational complexity; synchronisation; time-of-arrival estimation; ultra wideband communication; wireless sensor networks; Davidon-Fletcher-Powell algorithms; LDR UWB devices; TOA estimation; UWB wireless sensor networks; direct method; noncoherent energy collection method; position estimation; synchronization; time of arrival estimation; Context; Costs; Delay estimation; Delta modulation; Iterative algorithms; Phase estimation; Synchronization; Time of arrival estimation; Wireless communication; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra-Wideband, 2005. ICU 2005. 2005 IEEE International Conference on

Print_ISBN

0-7803-9397-X

Type

conf

DOI

10.1109/ICU.2005.1570035

Filename

1570035