Let X(w) be the Fourier transform of x(t). Using the basic definition of Fourier transform, find the Fourier transform of the time-shifted signal x(t − 3), which is the original signal that has been delayed by three time units. Let X(w) be the Fourier transform of x(t). Using the basic definition of Fourier transform, find the Fourier transform of the signal x(3t), which is the original signal that has been expanded three times in time. Consider the following bitstream: b=11010110.
(a) Sketch the non-return-to-zero (NRZ) line code of the bitstream.
(b) Sketch the Manchester line code for the bitstream.
(c) Sketch the return-to-zero (RZ) line code for the bitstream.
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