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Fast fading - multipath propagation
See how even small movements strongly impact frequency-selective channel characteristics. Fast fading describes mobile radio channels.
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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.
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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.
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Two-path channel
A direct path and a reflected path set up a simple multipath propagation environment. Determine the channel impulse response and transfer function!
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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
