The Nyquist law is applied to all the conventional compression coding algorithms, which prescribes that the sampling rate must be at least as twice as the signal frequency.
在传统的压缩编码技术中，采样均遵循奈奎斯特定律，该定律规定采样速率要高于原信号频率的两倍。
Channel coding is one of the important part of communication system, whose theoretic base is the Shannon's law of channel code set up by Shannon who inaugurated the information theory in 1948.
信道编码是通信系统中的重要组成部分之一，其理论基础是1948年信息论的开创者香农提出的信道编码定理。
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