Design Considerations
The range of the system for given availability with given rain fading is calculated by estimating the link budget. Worst-case rain fade is considered in system design. The level of the desired received signal decreases until it equals the receiver thermal noise plus the specified signal to noise ratio specified at the receiver end. The amount of interference is calculated by taking the ratio of carrier level (CL) to the sum of noise (N) and interference (i), given by CL/(N + i). The link-budget degradation is related to received power-flux density tolerance, for a given receiver noise figure (NF) and antenna gain in any given direction. This tolerance can be turned into separation of distances for various scenarios.
Electromagnetic ...
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