1. Consider a linear PCM transmission system with N = 4 regenerative repeaters, each…

1. Consider a linear PCM transmission system with N = 4 regenerative repeaters, each characterized by a bit-error probability Pbit = 10−5. Determine the value of PCM, knowing that the uniform quantizer with 9 bits achieves the signal-to-quantization noise ratio  50 dB.

2. Consider a linear PCM transmission system with N repeaters, each using 16-QAM with a reference

 The information input signal is uniform and the ADC employs an uniform quantizer with 256 levels.

a) Determine the minimum number of repeaters N for which it is more convenient using regenerative repeaters than analog repeaters.

b) Repeat using 2-PAM.