Data transmission over mobile voice channel based on M-FSK modulation

Author

Ali, Bechir Taleb ; Baudoin, Genevieve ; Venard, Olivier

Author_Institution

ESYCOM, Univ. Paris-Est, Noisy le Grand, France

fYear

2013

fDate

7-10 April 2013

Firstpage

4416

Lastpage

4421

Abstract

Voice channel in mobile communication systems has high priority and is almost always available. Its use as a bearer for data transmission allows to take advantage of this availability. But medium rate speech coders and associated VAD (Voice Activity Detector) and DTX (Discontinuous Transmission) which are well suited to voice signals, can strongly degrade other types of signals such as data modulated signals. In this paper we propose and evaluate a system for data transmission over mobile voice channel based on M-FSK modulation with optimized parameters. The parameters of the M-FSK modulation are tuned using real mobile communications voice channel in order to minimize the degradation introduced by the speech coder and by the discontinuous transmission (DTX) Our experiments show that it is possible to find a set of parameters for the M-FSK modulation which allows to achieve a moderate bit error rate (ie <; 10^-2) without error-correcting code.

Keywords

data communication; error statistics; frequency shift keying; mobile communication; vocoders; DTX; M-FSK modulation; VAD; bit error rate; data transmission; discontinuous transmission; error correcting code; mobile communication systems; mobile voice channel; speech coders; voice activity detector; Bit error rate; Frequency modulation; Mobile communication; Speech; Speech coding; Vocoders; AMR; DTX; Data transmission; EFR; M-FSK; VAD; Voice channel;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2013 IEEE

Conference_Location

Shanghai

ISSN

1525-3511

Print_ISBN

978-1-4673-5938-2

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2013.6555289

Filename

6555289