通信系统脆性的数学模型及分析方法

针对通信系统中存在的脆性问题，提出了关于通信系统脆性概念．根据信息论的信息率失真函数，建立通信系统脆性函数的数学模型．利用脆性函数模型对通信系统脆性进行定量分析及估算，并用二元离散信源为例说明该方法的有效性、可行性．结果说明通信系统的消息在传输过程中由于受到随机噪声的干扰，而使通信系统产生的“不确定性”，导致通信后收信者从消息中获取不到关于信源的信息量，即外界环境提供的“负熵”无法满足时，它们的无序度增加，混乱程度增加，直至使整个通信系统达到崩溃状态．

Model and analysis of communication system brittleness

According to the brittleness problem existing in a communication system,brittleness defi- nition of communication system is presented;the mathematic model of communication system brittle- ness is set up in accordance with information distortion function shown in information theory. Through the model,communication system is quantitatively analyzed and estimated.Meanwhile,the effectiveness and feasibility of the method is stated by using a duality discrete information source ex- ample.The result shows that du...