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【多选题】
关于分集接收中的合并技术，以下说法正确的是___________。A.
选择式合并会检测所有分集支路的信号，选择其中信噪比最高的支路信号作为合并器的输出。
B.
选择式合并的抗衰落能力最强。
C.
最大比合并会把各支路的信号等增益相加。
D.
最大比合并的抗衰落能力最强。
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