Method and device for transmitting digital signal via voice channel

Abstract

The invention provides a method for transmitting a digital signal via a voice channel, and a device using the method for transmitting the digital signal via the voice channel. The invention comprisesa process of coding original data, transmitting the coded data via the voice channel, and decoding the coded data after transmission is completed, and the device that can achieve the process. The method and device provided by the invention have the beneficial effects that the digital signal can be transmitted under the voice channel, the implementation method is relatively simple, lots of complexarithmetical operations are avoided, the selected chip is high in performance cost ratio, the cost is reduced, and the resource utilization rate is improved.

Description

Technical field [0001] The invention belongs to the field of communication technology, and in particular relates to a method for transmitting digital signals through a voice channel and a device for transmitting digital signals through the voice channel using the method. Background technique [0002] In recent years, the security of voice communication has attracted much attention. Leakage of call information and eavesdropping of mobile voice communication between countries are common. Technologies and equipment that pretend to be base stations to steal and monitor voice transmission have brought serious threats to the security of voice communication. This not only causes losses to personal interests, but also endangers national security and interests. Therefore, the need for security and confidentiality technology for voice communication is a key research topic at the moment. At present, most communication systems have dedicated links to transmit digital signals, but this link c...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the security issue of voice communication has attracted much attention. Leakage of call information and eavesdropping of mobile voice communication between countries are not uncommon. Technology and equipment that pretend to be base stations to steal and monitor voice transmission have brought serious threats to the security of voice communication. , which not only caused losses to personal interests, but also endangered the security and interests of the country, so the demand for security and confidentiality technology of voice communication is the current key research topic

At present, most communication systems have dedicated links for digital signal transmission, but this link cannot guarantee the reliability and short-term nature of data transmission, and there may be intercommunication problems when interoperating with international networks, so voice channels are needed To transmit digital signals to ensure the short-term and reliability of its transmission

Existing technologies for transmitting digital signals over voice channels include voice coding, voice hiding, voice encryption, and voice watermarking. These technologies have their own advantages, but at the same time, they also have shortcomings. They cannot well meet the needs of voice channel transmission of digital signals. Safety and reliability requirements, or design a certain redundancy when digital signals are modulated like voice

[0003] The Chinese patent with the patent number CN201410211275.X discloses a method for safely and reliably transmitting digital information in the GSM voice channel, which mainly solves the problems of low transmission rate, weak anti-interference ability and low security of digital information in the GSM voice channel

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