Acoustic Ranging and Communication via Microphone Channel

Absolute GPS co-ordinates are typically inaccessible indoor. Pervasive smartphones offer new opportunities for relative indoor localization. The low-complexity and high-accuracy ranging under the communication-link is a crucial requirement for enabling location sensing in indoor environments. In this paper, the authors propose a Time-of-Arrival (TOA) estimation and communication scheme utilizing the ubiquitous speaker/microphone pair to achieve accurate ranging. To compensate for the performance loss caused by this simple device, an optimized TOA estimation method is proposed for enhanced ranging reliability and accuracy.

Provided by: Institute of Electrical & Electronic Engineers Topic: After Hours Date Added: Nov 2012 Format: PDF

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