Title :
An upper audio band based low data rate communication modem
Author :
Sinha, Roopak ; Balamuralidhar, P. ; Bhujade, Rakesh
Author_Institution :
TCS Innovation Labs., Bangalore, India
Abstract :
Readily available audio interfaces on mobile devices (speakers and microphones) can be used to communicate data over a short range without the need for expensive infrastructure, using the imperceptible upper audio band (16-20KHz) of frequencies. A multi-tone Frequency Shift Keying (FSK) modulation is proposed for communication over the upper audio band. Error rate performance results for Multi-tone FSK modulation over white Gaussian noise channels are reported. Test results with a prototype modem developed are given. A sensing and spectrum access mechanism for devices with audio interfaces is proposed using protocol sequences.
Keywords :
AWGN channels; audio equipment; audio signal processing; data communication; frequency shift keying; modems; protocols; audio interfaces; audio signals; data communication; error rate performance; frequency 16 kHz to 20 kHz; mobile devices; multitone FSK modulation; multitone frequency shift keying modulation; protocol sequences; spectrum access mechanism; upper audio band based low data rate communication modem; white Gaussian noise channels; Lattice Multi-tone FSK; Protocol Sequences; Teager-Kaiser energy operator; Upper Audio band radio;
Conference_Titel :
Signal Processing and Communication Systems (ICSPCS), 2012 6th International Conference on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4673-2392-5
Electronic_ISBN :
978-1-4673-2391-8
DOI :
10.1109/ICSPCS.2012.6508000
