Title :
Localization of users in multiuser MB OFDM UWB systems based on TDOA principle
Author :
Gvozdenovic, Nikola ; Eric, Miljko
Author_Institution :
Inst. of Telecommun., Vienna Univ. of Technol., Vienna, Austria
Abstract :
In this paper, we analyze localization capabilities of multi-band OFDM UWB systems. TDOA (time difference of arrival) method is used for localization. M temporally synchronized sensors are localizing transmitter of unknown location. Space-temporal signal model in AWGN channel and in IEEE 802.15.3a channel model is derived analytically. We investigate the influence of correlation of channels between transmitter and each of sensors in sensor array on localization accuracy. The results are verified through simulation of hypothetical measurement setup where sensor array have circular geometry and the transmitter is placed within the array circle.
Keywords :
AWGN channels; OFDM modulation; array signal processing; correlation theory; direction-of-arrival estimation; geometry; radio transmitters; ultra wideband communication; wireless channels; AWGN channel; IEEE 802.15.3a channel model; M temporally synchronized sensor; TDOA method; channel correlation; circular geometry; hypothetical measurement setup; multiband OFDM UWB system; multiuser MB OFDM UWB system; radio transmitter; sensor array circle; space-temporal signal model; time difference of arrival method; user localization capability; Delay; OFDM; Radio transmitters; Sensor arrays; Localization; MB OFDM UWB; Sensor Array;
Conference_Titel :
Telecommunications Forum (TELFOR), 2011 19th
Conference_Location :
Belgrade
Print_ISBN :
978-1-4577-1499-3
DOI :
10.1109/TELFOR.2011.6143555
