An upper audio band based low data rate communication modem

Author

Sinha, Roopak ; Balamuralidhar, P. ; Bhujade, Rakesh

Author_Institution

TCS Innovation Labs., Bangalore, India

fYear

2012

fDate

12-14 Dec. 2012

Firstpage

1

Lastpage

8

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICSPCS.2012.6508000

Filename

6508000