Question
a.
Grounded hypothesis
b.
Fixed hypothesis
c.
Null hypothesis
d.
Zero hypothesis
Posted under Cognitive Radio
s(t) = n(t) [U1]
s(t) = a*i(t) + n(t) [U2]
where s(t) is the signal available at the xG user, i(t) is the signal transmitted by the primary user, n(t) is the AWGN, and a is the amplitude gain of the channel.
U1 is the null hypothesis which indicates the absence of signals from the licensed users in the spectrum band. U2 is termed alternate hypothesis which indicates the presence of signals from the licensed users in the spectrum band.
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Q. What is the terminology used to represent the absence of a licensed user in the spectrum?
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