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4.8
4.8
If a minimum protection distance  between the victim link receiver and interefering link transmitter is introduced then the simulation radius may then be calculated by using the following formula:

                                                                                

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body{{R}_{simu}}=\sqrt{\frac{{{n}^{active}}}{\pi \ \times dens_{it}^{active}pro{{b}_{transmission}}}+d_{0}^{2}}
    (Eq. 30)

Note: The calculation of the iRSS at each trial will be performed only if the location of the ILT satisfies the following condition Image Removed

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body${{d}_{it\to vr}}\ge {{d}_{0}}$
.

Figure 129 presents how to set-up SEAMCAT (See also A13.2 for further details).

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The simulation radius (see Figure 131) may then be calculated by using the following formula:Image Removed

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body{{R}_{simu}}=\sqrt{\frac{1}{\pi \ \ \times 10}+{{(0.5)}^{2}}}$.= 0.531 km

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F134
F134
Figure 130: Calculated simulated radius

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If the distance between the VLR and the ILT is equal to the protection distance (0.5 km), then:

                       

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bodyiRSSunwanted = 33 (dBm) + 11 + 9 - (32.5 + 10 log(0.5 x 0.5) + 20 log(1000)) = -33.

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5dBm
    

 

If the distance between the VLR and the ILT is equal to the simulation radius (0.531 km), then:

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bodyiRSSunwanted = 33 (dBm) + 11 + 9 - (32.5 + 10 log(0.531 x 0.531) + 20 log(1000)) = -34 dBm

 


These results are in line with those depicted on Figure 131. We can then increase the number of active transmitters to 10 as shown in Figure 132.

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The simulation radius may then be calculated by using the following formula (see Figure 133 for the result):

 

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body{{R}_{simu}}=\sqrt{\frac{10}{\pi \ \ \times 10}+.5\times 0.5}$ = 0.75

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km

             

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F137
F137
Figure 133: Calculation of the Rsimu and the iRSSunwanted using the protection distance
(for 10 active interferer)

If the distance between the VLR and a single ILT is equal to the protection distance, then:

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body iRSSunwanted = 33 (dBm) + 11 + 9 - (32.5 + 10 log(0.5 x 0.5) + 20 log(1000)) = -33.5 dBm

If the distance between the VLR and a single ILT is equal to the simulation radius, then:

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bodyiRSSunwanted = 33 (dBm) + 11 + 9 - (32.5 + 10 log(0.75 x 0.75) + 20 log(1000)) = -37 dBm

If 10 transmitters are deployed around the VLR then:

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bodyiRSSunwanted = -37 (dBm) + 10 log(10) = -27 dBm

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 and 
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bodyiRSSunwanted = -33.5 (dBm) + 10 log(10) = -23.5 dBm

                       

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body-27 dBm <

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iRSSunwanted < -23.5 dBm
 (see Figure 133)