Title :
A Software Defined Radio platform for passive UWB-RFID localization
Author :
Chuanying Zhai ; Zhuo Zou ; Qin Zhou ; Lirong Zheng
Author_Institution :
Sch. of Inf. & Commun. Technol., KTH-R. Inst. of Technol., Stockholm, Sweden
Abstract :
In this work, we further demonstrate the passive UWB-RFID positioning system by using a Software Defined Radio (SDR) platform. The SDR platform works as the UWB reader network to perform the ToA estimations and the time-difference-of-arrival (TDoA) positioning calculation. It is implemented by an oscilloscope and a set of off-shelf components. The oscilloscope features high-speed real-time sampling (40 GS/s), with 4 independent synchronized channels, enabling the multi-antenna multi-channel receiver realization in UWB bands with signal processing capability. The algorithms are evaluated and the system concept is demonstrated. According to the experimental results, the SDR platform using 4 receiver nodes successfully realizes the real-time positioning and achieves an average positioning with a best accuracy of 4 cm root-mean-square-error (RMSE) in 1m×1m area.
Keywords :
mean square error methods; oscilloscopes; radiofrequency identification; software radio; time-of-arrival estimation; ultra wideband communication; RMSE; SDR platform; TDoA positioning; ToA estimation; UWB reader network; multiantenna multichannel receiver; off-shelf component; oscilloscope; passive UWB-RFID localization; passive UWB-RFID positioning system; root-mean-square-error; signal processing capability; software defined radio; time-difference-of-arrival; Accuracy; Oscilloscopes; Radiofrequency identification; Receivers; Signal processing algorithms; Software algorithms; Time of arrival estimation;
Conference_Titel :
Wireless Information Technology and Systems (ICWITS), 2012 IEEE International Conference on
Conference_Location :
Maui, HI
Print_ISBN :
978-1-4673-0947-9
DOI :
10.1109/ICWITS.2012.6417741
