Title :
Energy detection receiver with TOA estimation enabling positioning in passive UWB-RFID system
Author :
Zou, Zhuo ; Deng, Ti ; Zou, Qin ; Sarmiento, M. David ; Jonsson, Fredrik ; Zheng, Li-Rong
Author_Institution :
iPack Vinn Excellence Center, KTH-R. Inst. of Technol., Stockholm, Sweden
Abstract :
This paper presents a passive UWB-RFID system with Time-Difference-of-Arrival (TDOA) positioning from system to circuit perspectives. Wireless powered RFID tags with UWB transmitter transmit wideband pulses to readers, allowing high accurate Time-of-Arrival (TOA) estimation. Low power low complexity TOA estimations using energy detection receiver are investigated. Max Energy Select (MES), Threshold Comparison (TC), and MES-Search-Back (MES-SB) algorithms are evaluated and analyzed. As a special focus, a prototype of the proposed energy detection receiver is designed and implemented. It consists of a 3.1-4.8GHz IR-UWB analog frontend with high speed digital circuits in 90nm CMOS, and a flexible back-end with a TOA estimator on FPGA.
Keywords :
radiofrequency identification; receivers; time-of-arrival estimation; transmitters; ultra wideband communication; FPGA; TOA estimation; UWB transmitter; energy detection receiver; frequency 3.1 GHz to 4.8 GHz; max energy select; passive UWB RFID system; size 90 nm; threshold comparison; time difference of arrival positioning; wideband pulses;
Conference_Titel :
Ultra-Wideband (ICUWB), 2010 IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-5305-4
Electronic_ISBN :
978-1-4244-5306-1
DOI :
10.1109/ICUWB.2010.5615993
