Difference between revisions of "B3-Multipath Propagation"
Josef.Noll (Talk | contribs) (→Related physics) |
Josef.Noll (Talk | contribs) (→Related physics) |
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<math> \mu_0=4 \pi \cdot \10^{-7} N/A^2</math>. The unit of <math>\mu_0</math> is <math>Newton/Ampere^2 N/A^2 = kg m/s^2 1/A^2</math> | <math> \mu_0=4 \pi \cdot \10^{-7} N/A^2</math>. The unit of <math>\mu_0</math> is <math>Newton/Ampere^2 N/A^2 = kg m/s^2 1/A^2</math> | ||
− | <math>\varepsilon_0=\frac{1}{\mu_0 c^2} = 8.854 \cdot \10^{-12} F/m</math>. The unit of <math>\varepsilon_0</math> is Farad/m: <math>F/m = A s/V = A^2 s^4/(kg m^2)</math> | + | <math>\varepsilon_0=\frac{1}{\mu_0 c^2} = 8.854 \cdot \10^{-12} F/m</math>. <br/> |
− | + | The unit of <math>\varepsilon_0</math> is Farad/m: <math>F/m = A s/V = A^2 s^4/(kg m^2)</math> | |
= Diffraction = | = Diffraction = |
Revision as of 10:12, 17 October 2016
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Contents
⌘Multipath and how to use it
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Multipath propagation can be used through
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Note: The mobile phone users will typically not have a direct link between the mobile phone and the antennas of the base station in a typical environment. Such a situation, where the mobile communication has to go "around a building" or "around the corner" are called NLOS, non Line-of-Sight connection. As compared to a Line-of-Sight LOS connection the signal is typically reduced by some 20-30 dB.
⌘ Boundary conditions
- What is happening on electrical walls, magnetic walls?
Scattering, reflection and diffraction (explain differences) are the three major components in wave propagation. Ideal reflection environments are characterised through
⌘Comments
⌘ Reflection
Related physics
Free Space impedance as connection of permeability
and permittivity
.
. The unit of
is
.
The unit of is Farad/m:
Diffraction
Diffraction is the transforming of a wave at an object, typical edge of a house ("edge diffraction") or the roof-top
Scattering
Interaction with object being about the same size as the wavelength,