Assume that the bit period of Example 5.8 is T = 1 second. That means that the sampling rate is f_s= 10 sps because nsamp = 10 in the program. Assuming that a N_FFT= 5000 point FFT was used to produce Figure 5.16 and that the 5000th point corresponds to f_sjustify that the FFT output at bin 1000 corresponds to the bit rate of 1/T = 1 bit per second in this case.

Figure 5.16

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(a) -1 100 200 300 400 500 600 1.5 (b) 0.5 100 200 300 400 500 600 0.5 (c) 200 400 600 800 1000 1200 1400 1600 1800 2000 FFT Bin Spectrum