B. P. Lathi, Zhi Ding - Modern Digital and Analog Communication Systems-Oxford University Press (2009)

Problems 55
Figure P.2. 1-2
x(t)
y(t)
:I
2
0 t-
2 t- -1
(a)
x(t)
y(t)
2Jt
21t
0
() lt
t-
t-
(b)
x(t)
y(t)
()
it/4
lt
t-
(c) 0 lt t-
Figure P.2. 1-5 g ( t)
t-
Figure P.2. 1 -6
2.1-7 Show that the power of a signal g(t) given by
g(t) = L Dk jw k t
k=m
Wi -:/- wk for all i -:/- k
is (Parseval's theorem)