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中断概率

于 2022-02-04 发布 文件大小:1.55 kB
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电气工程,计算机科学与信息理论,信道容量是最严格的上限对信息的速率,可以在通信信道上进行可靠传输。通过有噪声信道编码定理,一个给定的信道的信道容量的限制信息速率(以每单位时间的信息单元),其可具有任意小误差概率来实现。在衰落信道,所接收的信号具有可以根据该频道上没有恒功率,可以通过概率模型进行说明。因此,信噪比也将成为一个随机变量。并因此信道的最大容量变的随机变量。中断概率表示根据可变信噪比在接收端,那是什么的速率不支持因变量信噪比raito.They是性能度量的不同方面的概率。 BER是在接收器的性能,但中断概率是一个度量的通道。关于数据的容量或吞吐量由于噪音和衰落假设后者在说话,可以通过信道被发送到具有低电平余量信噪比。误码率是另一回事。对于具有相同的中断概率的信道,我们可能有不同的BER为两个不同的接收器。

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