Instant Messaging Audio Channel Carrier Transmission
Jian Li · Communications technology · 2013
Instant messaging tool is an important source of information leakage,while bringing much convenience to the public for their information exchange. In order to improve the security of information and with instant communication tool as the platform,the audio channel is used to transmit digital carrier signal,the relatively important information modulated to the carrier for transmission,and the receiving of complete information finished through demodulation. Experiments of modulation and demodulation is done by using the binary differential phase shift keying method. After meta information modulation,the binary code is transmitted in Tencent QQ audio channel,while in the receiving end,the binary code is successfully received and demodulated. The experiment indicates the feasibility of this method.