根据扩频的不同实现手法,码分多址可分为直接序列码分多址、_____、_____和混合码分多址。
跳频码分多址;跳时码分多址
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上一篇:《神曲》中引导但丁游历天堂的向导是________。
下一篇:Answer the following questions. Your answers should be clear and short.a) They now eat better food, live in better houses, and wear better clothes than ever before, b) They are now better fed, better housed, and better clothed than ever before