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 />
approximately <strong>on</strong>e kilohertz <strong>and</strong> a nominal centre-frequency of 1766.6MHz. The four MS antennas are<br />
slanted patch with a half-power beam-width of 80-degree, which point in four different directi<strong>on</strong>s offset<br />
90-degrees from each other, see Figure 5.9. The CW of the transmit antennas are not frequency locked,<br />
resulting in an unknown phase-offset in the four vector <strong>channel</strong>s between the mobile-stati<strong>on</strong> <strong>and</strong> <strong>on</strong>e<br />
base-stati<strong>on</strong> will result. The signals transmitted by the four antenna at MS are received by two basestati<strong>on</strong>s,<br />
down-c<strong>on</strong>verted to complex I&Q base-b<strong>and</strong> <strong>and</strong> saved <strong>on</strong> a hard-disc. One of the base stati<strong>on</strong>s<br />
(Kårhuset-A) has a four-element antenna array <strong>and</strong> is placed <strong>on</strong> a roof barely above the average building<br />
height in its sector of coverage. The other base-stati<strong>on</strong> has two four antenna arrays c<strong>on</strong>nected (Vanadis-B<br />
<strong>and</strong> Vanadis-C) <strong>and</strong> is placed <strong>on</strong> a roof some ten meters above the average building height. Views from<br />
basestati<strong>on</strong> are shown in Figure 5.10. The two arrays are located <strong>on</strong> different edges of the same building<br />
some 20-meters from each other <strong>and</strong> offset 120-degrees in pointing directi<strong>on</strong>. In fr<strong>on</strong>t of Vanadis-B are<br />
some trees, which may have an impact <strong>on</strong> the propagati<strong>on</strong>. The distance between the two sites is 900<br />
meters <strong>and</strong> the measurements were d<strong>on</strong>e in with mobile located in the area between the two BSs. The<br />
path-loss slope from Kårhuset was estimated to be around 40-45dB/dec while it is 25-30dB/dec from<br />
Vanadis. The total measurement route covers about 15km of mobile trajectory.<br />
Figure 5.9: Left: MS antennas, right: BS antenna array.<br />
Figure 5.10: Left: View from “Kårhuset-A” basestati<strong>on</strong>. Right: View from “Vanadis-B” BS.<br />
5.2.6 Scenario D1<br />
5.2.6.1 EBIT campaign<br />
Measurements c<strong>on</strong>ducted during 2004 for D1 were performed at two centre-frequencies, 2.45 <strong>and</strong> 5.25<br />
GHz in Tyrnävä, a small village near Oulu, <strong>and</strong> its surroundings. The measurement results were included<br />
in the deliverable D5.3 [D5.3].<br />
In the year 2005 three new BS locati<strong>on</strong>s were measured at 5.25 GHz with 100 MHz b<strong>and</strong>width. In<br />
additi<strong>on</strong>, PL measurements were c<strong>on</strong>ducted with a smaller b<strong>and</strong>-width 10 MHz to increase the sensitivity<br />
of the receiver equipment. This arrangement allowed us to obtain path losses up to 10 km distance.<br />
At the same locati<strong>on</strong>s some measurements at 2.45 GHz were performed to investigate the effect of centrefrequency<br />
<strong>on</strong> the path loss <strong>and</strong> other <strong>channel</strong> parameters. For practical reas<strong>on</strong>s the measurements at 2.45<br />
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