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简要说明基于SDH技术的MSTP所能提供的光接口和电接口类型。...
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标志一个卫星通信地球站的接收性能指标的参数是什么?并解释其物理意义...
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某三扇区CDMA基站配置了66个信道单元,其中每扇区控制信道开销占用两个信道单元,软切换率为20%,无线呼损为5%,每用户平均忙时话务量为0.02Erl。此基站能容纳多少用户?...
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