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PPM是一种( )的调制方法。
分类: 通信专业业务
发布时间: 2023-11-19 20:54
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PPM是一种( )的调制方法。
A.A、脉冲载波的幅度随基带信号变化
B.B、脉冲编码调制
C.C、一种基于脉冲密度
D.D、脉冲位置根据被调信号的变化而变化
正确答案是D
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