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直接序列扩频
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直接序列扩频
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扩展频谱技术
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direct sequence spread spectrum
直接序列扩频
用高速率的扩频序列在发射端扩展信号的频谱,而在接收端用相同的扩频码序列进行解扩,把展开的扩频信号还原成原来信号的扩展频谱技术。简称直扩。
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equivalent continuous A-weighed sound presure level
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