Final report on link level and system level channel models - Winner
Final report on link level and system level channel models - Winner
Final report on link level and system level channel models - Winner
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WINNER D5.4 v. 1.4<br />
cell sub-areas with different local propagati<strong>on</strong> characteristics as indicated in Figure 4.1, Figure 4.2 <strong>and</strong><br />
Figure 4.3, respectively. In the example of Figure 4.2 the correlati<strong>on</strong> could arise from the obstructi<strong>on</strong> of<br />
the same building while in Figure 4.3 the correlati<strong>on</strong> arises from the fact that the local envir<strong>on</strong>ment of the<br />
mobile stati<strong>on</strong> is the same for both base-stati<strong>on</strong>s. In the examples of Figure 4.1<strong>and</strong> Figure 4.2 it is<br />
reas<strong>on</strong>able that the correlati<strong>on</strong> would increase when the angle β between the two base-stati<strong>on</strong>s seen at the<br />
mobile stati<strong>on</strong>, see Figure 4.4. Such a dependence correlati<strong>on</strong> has been observed in [Maw92] where the<br />
shadow-fading is investigated.<br />
X<br />
BS<br />
MS<br />
X<br />
BS<br />
Figure 4.1: Links to two base-stati<strong>on</strong>s with comm<strong>on</strong> scatterers.<br />
BS<br />
BS<br />
MS<br />
Figure 4.2: Shadowing by the same object in the two <strong>link</strong>s of two different base-stati<strong>on</strong>s.<br />
BS<br />
A<br />
B<br />
C<br />
BS<br />
Figure 4.3: Two base-stati<strong>on</strong>s with three local areas A, B <strong>and</strong> C which are characterized as A) open<br />
green-field, B) wooded area C) Built-up area.<br />
BS1<br />
r 1 r 2<br />
B<br />
BS2<br />
h 1<br />
h<br />
2<br />
MS<br />
Figure 4.4: The geometry of two base-stati<strong>on</strong>s <strong>and</strong> a mobile-stati<strong>on</strong>.<br />
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