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--- faq [2012/10/25 14:41] – asif
+++ faq [2012/10/25 14:47] (current) – asif
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 == QF3.  For problem 3.6, we are given the signal waveforms s1(t) and s2(t), but not a1(t) or a2(t).  Can we assume s1(t) = a1(t) and s2(t) = a2(t)?  I was thinking we could do this because the channel effect will be filtered out by the time we sample z(t) and it is passed through the ML detector.  Is this assumption correct?==
-F3. Yes. You should assume that both s1(t) and s2(t) are zero outside the duration T.
+F3. No. Please refer to Fig. 3.13 in the text. Note that a1(t) is the integral of s1(t). Likewise a2(t) is the integral of s2(t).