[프리젠테이션]Wireless 에 대한 프리젠테이션 (ppt)

소개

Wireless. 그 중에서도 페이딩(fading) 현상에 대해
여러 논문을 읽고, 그 논문에 대해 프리젠테이션 한 파일.
실험결과도 포함.

목차

What is fading?

Mathematical expressions for the fading channels.

Experiments

본문내용

What is fading?
Mathematical expressions for the fading channels.
Experiments
Free space
What is free space?
- In the free space, the RF frequency energy does not be affected by absorption, reflection, and refraction.
Path loss = Ls(d) = (4πd / λ )2
ver
the length of propagation signal.
Three mechanisms.
Diffraction : Radio path is obstructed by a dense body with large dimensions compared to λ
Reflection : Electromagnetic wave impinges on a smooth surface which has vary large dimensions compared to the wave length(λ)
Scattering : Radio wave impinges on either a large rough surface or any surface whose dimensions are similar to the λ or less than λ.

참고자료

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