Article
Towards Accurate Acoustic Localization on a Smartphone
The 32nd IEEE International Conference on Computer Communications (INFOCOM)
(2013)
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.
Disciplines
Publication Date
April, 2013
DOI
10.1109/INFCOM.2013.6566822
Publisher Statement
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Citation Information
Kaikai Liu, Xinxin Liu, Lulu Xie and Xiaolin Li. "Towards Accurate Acoustic Localization on a Smartphone" The 32nd IEEE International Conference on Computer Communications (INFOCOM) (2013) p. 495 - 499 ISSN: 0743-166X Available at: http://works.bepress.com/kaikai-liu/10/