Main Problems OF Signal Propagation are:
- Attenuation,
- Scattering,
- Diffraction,
- Reflection,
- Refraction.
Except for attenuation
all other effects can divert the waves from a straight line.
AttenuationExtreme form of attenuation blocking or shadowing of building blocks
Reflection
If object (like mountain buildings) are larger compared with wave length of signal then signal will reflected .the more often it si reflected or bounced signal become more weak
Scattering
if object is in order or less compared with wave length of signal then wave can scatter
Diffraction
A signal can be form several smaller signal when it hit on edge of object which will propagate different direction and so it become weakerRefraction.
when it travel from one media to another refraction take place
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