'0', 'qtype' => '1', 'answer1' => '成反比 ', 'answer2' => '成正比 ', 'answer3' => '无关系 ', 'answer4' => '以上答案皆不对 ', 'answer5' => '', 'answer6' => '', 'correct' => 'A', 'jiexi' => '', 'corrects' => '0', 'incorrects' => '0', 'wid' => '0', 'dateline' => '1670398780', 'status' => '1', 'ztid' => '19', 'ztid1' => '0', 'ztid2' => '0', 'export' => '0', ), ); $expiration = '1792747923'; ?> 传输分集的主要原理是利用空间信道的弱相关性,结合时间/频率上的选择性,为信号的传递更多的副本,提高信号的质量,从而改善接收信号的信噪比_x000D__答案与解析 - 5G通信
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传输分集的主要原理是利用空间信道的弱相关性,结合时间/频率上的选择性,为信号的传递更多的副本,提高信号的质量,从而改善接收信号的信噪比_x000D_

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