PRE-LAB Assume that the sampling rate is 5 times the baseband bandwidth, (i.e. 5 50 kHzsf B= = ). 1. Compute the sampled waveform when the message is ( ) 2cos(2 10,000 )x t t = with ideal sampling. 1. Plot the sampled waveform in time domain. 2. Plot the two-sided amplitude spectrum of the sampled waveform Figure 1. x(t) and x s (t) waveform in time domain. f=10000; fs=50000; t=0:1e-6:0.3e-3; x=2*cos(2*pi*f*t); plot(t,x) n=0:1:15; xn=2*cos(2*pi*f/fs*n); time=n/fs; hold on; stem(time, xn) stem(time, xn,'r') xlabel ('time[s]') ylabel ('x(t), x(n)') grid on