statistical multipath model lecture4.pdf
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Time-invariant case
Time-varying case
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%%
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/cos],2[cos5.)()( nDDprr vffEAAnnnQI
===
)(]2[sin5.)( ,, QInnQI rrDprr AfEA ==
)2sin()()2cos()()( , crrcrr fAfAA QII =
)(]2[sin5.)( ,, QInnQI rrDprr AfEA ==
)2sin()()2cos()()( , crrcrr fAfAA QII =
=0
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&&%'%%'% =+
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)2(5.)()( 0 Dprr fJAA QI ==
Decorrelates over roughly half a wavelength
)]2(5[.)(
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crcrr
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Used to generate simulation values fc+fDf
c
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fc-f
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Frequency correlation function
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Channel appears static for
transmitted digital symbols
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))
Double
Fourier
Transform
t=0
Fourier
Transform
FourierTransform
f=0
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