3. a) A transmitter transmits a BPSK-modulated information with 0.02 mW power to a receiver. How much BER is there on a wired channel and wireless Rayleigh faded channel if the noise variance at the receiver is 0.001 mW . b) Compare the probability of deep fade of a SISO system with the \( 2 \times 1 \) SIMO system for the same wireless communication environment indicated in question 3 (a).