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《Journal of Astronautics》 1987-01
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Wang Yanshun (Luoyang Institute of Tracking and Telecommunication Technology)  
In order to eliminate the transmission error codes of the random signals in dataswitching, a receiver designed to detect the input random signals. When the transmission error eodes are generated, the distribution density function of the statistic should be where is the distribution density function of the statistic when there is no transmission error code generated. P(y,ρσ,n) is an even function with y=0 being the minimum value. Taking the minimun error propability to be the detection criterion, the detection threshold will be the root of the equation P(y,ρσ,n) = l. Therefore thecriterion for the minimum error probability detection will be 1.
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