Fast fading - multipath propagation
See how even small movements strongly impact frequency-selective channel characteristics. Fast fading describes mobile radio channels.
Doppler shift in wireless communications
In channels where the receiver moves the signal frequency is shifted depending on the velocity. In practice the Doppler effect occurs in wireless communications.
Wi-Fi IEEE 802.11ac physical layer parameters
This simulation implements a Wi-Fi transmission (80 MHz, VHT-MCS 6, 400 ns guard interval). Analyze the signals, e.g. the transmit spectrum.
A direct path and a reflected path set up a simple multipath propagation environment. Determine the channel impulse response and transfer function!
Two-path channel - baseband model
A baseband equivalent representation of the channel is useful to process the transfer function around the carrier frequency. It's equivalent to the bandpass channel transfer function.
- Two-path channel - moving car
- Doppler shifts for two-path channel
- Four-path channel - baseband model
- Extended Pedestrian A model