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A17.11.2
A17.11.2
The mean path loss is characterised by a dual-slope model with a break point dBP, an exponent of 2 for all distances less than dBP, and an exponent of 3.5 otherwise. In short, the mean path loss, L, in dB is

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This propagation model is used to calculate terminal-terminal interference and takes account of shadowing losses due to objects between the two terminals, but does not explicitly account for any loss from near-field objects, such as the person carrying the equipment.

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F477
F477
Figure 477: GUI of the IEEE 802.11 Model C (modified)

 

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T092
T092
Table 92: IEEE 802.11 Model C (modified) propagation model

 

Description

Symbol

Type

Unit

Comments

Variation

-

B

-

Variation in path loss takes into account the uncertainty of building design, furniture, room size, etc.

Distance to break point

BP

S

m

 

Log-Normal distribution before BP

-

S

dB

 

Log-Normal distribution after BP

-

S

dB

 

 

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