Vestigial sideband modulation (VSB), discussed in Chapter, offers another possible modulation method for signaling over an AWGN channel.
a. In particular, a digital VSB transmission system may be viewed as a time-varying onedimensional system operating at a rate of 2/T dimensions per second, where T is the symbol period. Justify the validity of this statement.
b. Show that digital VSB is indeed equivalent in performance to the offset QPSK.