import matplotlib.pyplot as plt
from sk_dsp_comm import sigsys as ss
x,b, data = ss.nrz_bits(1000,10,'rc')
y = ss.cpx_awgn(x,20,10)
yI,yQ = ss.scatter(y,10,60)
plt.plot(yI,yQ,'.')
plt.axis('equal')
plt.ylabel("Quadrature")
plt.xlabel("In-Phase")
plt.grid()
plt.show()