| 摘要 |
PURPOSE:To enable to digitally output even to the bit components representing the confirmation of demodulated data at software discrimination, by comparing the threshold signal corresponding to a small area for software discrimination with a uniform random signal. CONSTITUTION:When an input data 21 is input to an input terminal 20, and when the bit error rate P information 18 of desired value is externally set in the form of P=2<-n>, the digital suprious noise component a1 16 at normal hardware discrimination accordingly is made. At the same time, the small area threshold value 26 corresponding to the error rate information is output as the address information by the error rate information 18, binary digital suprious noise 16 and software discrimination code pulses 34, 35 inputting to the terminal 33, and if the output uniform random number X37 of the PN system train generator 10 is equal to the small region threshold value 26 or smaller, the trigger pulse 28 of the latch circuit 32 is generated to produce the bits a2, a2 23 representing the confirmation of demodulated data at software discrimination, and output is made in addition with the bit a1. |
