An OFDM-based secure data communicating scheme in GSM voice channel

Author

Chen, Liquan ; Guo, Qi

Author_Institution

Sch. of Inf. Sci. & Eng., Southeast Univ., Nanjing, China

fYear

2011

fDate

9-11 Sept. 2011

Firstpage

723

Lastpage

726

Abstract

A novel scheme based on OFDM mechanism which modulates encrypted data onto speech-like waveforms is presented in this paper. The modulated waveforms go through the voice channel with sufficient accuracy and are demodulated and decrypted at the receiving end. A novel model was proposed for GSM Full Rate speech codec by modulating encrypted bit stream onto orthogonal multi-frequency sinusoidal carriers. Simulation results on GSM-to-GSM connection show that the throughput can achieve 2.4kb/s with BER of 0.12%. The proposed scheme can be widely used for real-time secure data communications.

Keywords

OFDM modulation; cellular radio; cryptography; data communication; error statistics; speech codecs; telecommunication channels; telecommunication security; BER; GSM full rate speech codec; GSM voice channel; GSM-to-GSM connection; OFDM mechanism; OFDM-based secure data communicating scheme; encrypted bit stream; encrypted data; orthogonal multi-frequency sinusoidal carriers; real-time secure data communications; speech-like waveforms; voice channel; Bit error rate; Cryptography; Frequency modulation; GSM; Mobile communication; OFDM; Speech; GSM; OFDM; Speech-like waveform;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Communications and Control (ICECC), 2011 International Conference on

Conference_Location

Zhejiang

Print_ISBN

978-1-4577-0320-1

Type

conf

DOI

10.1109/ICECC.2011.6066715

Filename

6066715