DocumentCode :
623617
Title :
Towards accurate acoustic localization on a smartphone
Author :
Kaikai Liu ; Xinxin Liu ; Lulu Xie ; Xiaolin Li
Author_Institution :
Univ. of Florida, Gainesville, FL, USA
fYear :
2013
fDate :
14-19 April 2013
Firstpage :
495
Lastpage :
499
Abstract :
Since our daily activities are dominantly indoor, as smart phones emerge as the most popular personal computing companions, major IT companies recently launched aggressive investment on mobile indoor location services and positioning systems, e.g., on iOS or Android mobile devices. However, one major hurdle has not been conquered yet: smart phone-based high-resolution indoor localization. In this paper, we propose a practical solution for accurate ranging and localization based on acoustic communication between anchor nodes with speakers and the microphone on a smartphone. To identify different anchor nodes and enable time-of-arrival (TOA) ranging, we propose approaches for signal modulation, symbol detection and demodulation, synchronization and ranging. Experimental results show that the communication bit-error-rate and ranging accuracy is sufficient for our target applications. The preliminary results of localization demonstrate that our algorithm could achieve highaccuracy of 23cm in the offline mode with a promising potential for realtime smartphone-based indoor localization.
Keywords :
acoustic signal detection; demodulation; error statistics; indoor radio; microphones; mobile radio; smart phones; time-of-arrival estimation; Android mobile device; IT companies; TOA ranging; acoustic communication; acoustic localization; communication bit-error-rate; high-resolution indoor localization; iOS; microphone; mobile indoor location service; personal computing companion; positioning system; signal modulation; smart phones; speakers; symbol demodulation; symbol detection; synchronization; time-of-arrival ranging; Accuracy; Acoustics; Bit error rate; Demodulation; Distance measurement; Microphones; Mobile handsets;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
INFOCOM, 2013 Proceedings IEEE
Conference_Location :
Turin
ISSN :
0743-166X
Print_ISBN :
978-1-4673-5944-3
Type :
conf
DOI :
10.1109/INFCOM.2013.6566822
Filename :
6566822
Link To Document :
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