[理工] [通訊]-請問海洋電機這一題..
[題目]
A random noise w(t) has a dc voltage of 0.5V
and a total root-mean square value of 5V.
Also, w(t) and w(t+τ) are independent for |τ| >= 1 second,
and Rw(τ) decreases linearly with |τ| for 0 <= |τ| <= 1 second.
Plot Rw(τ) and label all dimensions.
[解答]
Pdc = 0.25
P = 25 = Rw(0) ----> Rw(τ) = (25-0.25) tri(τ) + 0.25
[個人想法]
請問解答的第一行是因為...
dc voltage = 0.5V 而求P要平方吧 所以變0.25 請問是這樣嗎?
而解答第二行....拍謝...是真的看不懂...
可以請大家教教我嗎? 謝謝!!
謝謝大家喔!!
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