A 16-QAM transmission system uses the transmission pulse
con T = 1s, g0 = 1 V. The carrier has frequency f0 = 40 MHz. The modulated signal is transmitted over a cable with specific attenuation of 10 dB/km. At the receiver the AWGN has PSD N0/2 = 2 · 10−18 V2/Hz.
a) Find the statistical power of the transmitted signal (in V2).
b) Draw the optimal receiver scheme, specifying all its parameters.
c) Determine the receive reference signal/noise ratio in order to get Pe = 10−5.
d) Find the maximum cable length in order to obtain the error probability of point c).
