Question

6. Problem 6 [20 Points]: The waveform in Fi shaping at a data rate of so,000bits/sec. gure2 represent the output of transmitters using PAM with raised co sine pulse Please demodulate this demodulated results, the data pattern represented by this waveform? wave form by sampling in the center of the bit periods. What is the 1.5 0.5 0 -0.5 20 120 40 160 180 40 60 Figure 2

Answer 1

The waveform represent the output of transmitters using PAN with raised cosine pulse. Given data: Data pattern = 10101101 Transmitted rate = 50,000 bit/sec a) T = 1/rb rb = 50,000 bit/sec T = bit period. T = 1/rb t = 1/50,000 T = 20 r sec \r\n where, Amplitude = 1 and -1 b) Accuracy = 95% rb_max = 500,000 bit/sec