Module: Physical Models of Wireless Channels

Discussion of physical models of wireless channels through some simplified examples, which reveal some key features of wireless channels.

Dates: Wed, Jan 10 - Wed, Jan 17

Learning Outcomes

Physical models of wireless channels

Readings

Roadmap of this module

Overview

Case 1: Fixed antennas in the free space

Two antennas in the space of nothingness

Case 2: Antennas start moving...

Moving antennas create Doppler shift

Case 3: A wall enters the space

Reflection creates delay spread

Case 4: Reflecting wall and moving antennas

Doppler spread and coherence time

Practical propagation environments

Complicating factors in practice

Experiential Learning

Coherence distance and coherence bandwidth

Simulation for fixed antennas with a reflecting wall

Doppler spread and coherence time

Simulation for moving antennas with a reflecting wall

Assessments

Physical models

Physical models of wireless channels

Outcome(s) assessed: