In order to ensure information transmission security, encrypt and decrypt was used in channel coding and decoding of data communication.

为了保证信息传输的安全性，往往在数据通信的信道编码中进行加密处理，在收方进行解密处理。

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So when transmitting, Chinese can solve the question of channel transmission and the optimum coding of linguistic information better, and improve the quality of channel.

因而，汉语在传输时，可以更好地解决信道传输、语言信息的最佳编码问题，从而提高信道的质量。

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Ever since 1948 the foundation of "Information and coding theory" by Shannon, the channel coding technology has become an important part of communications.

自从1948年香农开创了“信息论与编码理论”以来，信道编码技术已经成为通信领域中一个重要的部分。

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