Square-root raised cosine roll-off digital filter was widely applied to baseband shaping filter and match filter in modern digital communication.
现代数字通信中广泛采用平方根升余弦滚降数字滤波器作为基带成形滤波器和匹配滤波器。
In the modern digital communication system, error control coding is an important technique to guarantee the reliable message transmission over noisy channel.
在现代数字通信系统中信道编译码技术已经成为通信系统保证信息传输可靠性的重要手段之一。
As speech is the most important, efficient and convenient way in communications, speech communication holds the importance in modern digital communication system.
其中，通过语音传递信息是人们最重要、最有效和最方便的通信和交流方式，语音通信在现代数字通信系统中占有重要的地位。
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