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

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2 Author(s)
Liquan Chen ; School of Information Science and Engineering, Southeast University, Nanjing, 210096, China ; Qi Guo

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.

Published in:

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

Date of Conference:

9-11 Sept. 2011