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来自维基百科,自由的百科全书
幅度偏移调制,又称幅移键控[1][2]、幅度键移(英语:Amplitude-shift keying,ASK)是通过载波的幅度变化来表示数字信号的一种幅度调制方式。在一个ASK系统中,二进制符号1会通过一个固定幅度、固定频率的载波信号来表示。这一载波信号会持续T秒。如果信号的值为1,就会传输载波信号,反之则不会传输载波信号。
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