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信道容量 - Wikipedia

信道容量

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信道容量是在通信信道上可靠地传输信息时能够达到的最大速率。根据有噪信道编码定理,给定信道的信道容量是其以任意小的差错概率传输信息的极限速率。信道容量的单位为比特每秒、奈特每秒等等。[1] [2]

香农第二次世界大战期间发展出信息论,并给出了信道容量的定义和计算信道容量的数学模型。他指出,信道容量是信道的输入与输出的互信息量的最大值,这一最大取值由输入信号的概率分布决定。 [3]

[编辑] 参见

[编辑] 参考文献

  1. ^ Saleem Bhatti.Channel capacity.Lecture notes for M.Sc. Data Communication Networks and Distributed Systems D51 -- Basic Communications and Networks.
  2. ^ Jim Lesurf.Signals look like noise!.Information and Measurement, 2nd ed..
  3. ^ Thomas M. Cover, Joy A. Thomas,(2006),Elements of Information Theory,John Wiley & Sons, New York,2006


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