import math #Signal Power data rate fb = 100 Kbps fb = 10.**5; #Signal Strength Ps = 1 mW Ps = 1*10.**(-3); #Chip frequency fs = 100 MHz fs = 10.**8; #Noise Spectral Density n = 2*10**(-9) W/Hz n = 2*10.**(-9); #Jamming Signal power is Pj = 1 W Pj = 1.; #Procesmath.sing Gain P P = fs/fb; print 'Procesmath.sing Gain is ',P #Bit Interval T T = 1/fb; print 'Bit Interval is ',T,'s' #Energy per bit Eb Eb = Ps*T; print 'Energy per bit is ',Eb #Error Probability without jamming E_without_jamming E_without_jamming = 0.5*math.erfc((Eb/(n))**0.5); print 'Error probability without jamming is %.4f'%E_without_jamming #Error Probability with jamming E_jamming E_jamming = 0.5*math.erfc(((2*Ps*P)/(Pj))**0.5); print 'Error probability jamming is %.4f'%E_jamming
Procesmath.sing Gain is 1000.0 Bit Interval is 1e-05 s Energy per bit is 1e-08 Error probability without jamming is 0.0008 Error probability jamming is 0.0228
#Chip Rate fc = 110 MHz fc = 10*10**6; Tc = 1./fc; #Delay D = 0.1 ms D = 0.1*10**-3; #Speed of light c = 3*10**8 Kmps c = 3*10**8; #Estimated Dismath.tance d d = 0.5*c*D; #Tolerance Tol Tol = 0.5*c*Tc; print 'The target is between ',d-Tol,' metres and ',d+Tol,' metres of the source.'
The target is between 14985.0 metres and 15015.0 metres of the source.
#Number of Flip Flops N N = 13.; #Maximal length of sequence L L = 2**N - 1; #Upper Bound S S = (L - 1)/N; #No of basic sequences and mirror images print 'No of basic sequences and mirror images is ',S/2
No of basic sequences and mirror images is 315.0