Multipath Fading Channel

Multipath Fading Channel - Simulink

This model shows how to use the Rayleigh and Rician multipath fading channel blocks from the Communications System Toolbox™. Rayleigh and Rician fading channels are useful models of real-world phenomena in wireless communications. These phenomena include multipath scattering effects, time dispersion, and Doppler shifts that arise from relative motion between the transmitter and receiver. The model also shows how these blocks operate with the channel visualization tool.

Digite no terminal do Matlab

open_system('commmultipathfading.slx')

Toolbox e blocos necessários

Para realização da simulação, é necessário o Communications System Toolbox™ fornecido pelo próprio Simulink.

Blocos

• Bernoulli Binary Generator;
• QPSK Modulator Baseband;
• Multipath Rayleigh Fading Channel;
• Multipath Rician Fading Channel;
• Constellation Diagram.

Modelo e parâmetros

The example model simulates QPSK transmission over a multipath Rayleigh fading channel and over a multipath Rician fading channel. You can control transmission and channel parameters via workspace variables.

Parâmetros

• bitRate -> Taxa de transmissão (b/s)
• bitsPerFrame -> Número de bits transmitidos por Frame
• maxDopplerShift -> Máximo Efeito Doppler das componentes difusas (Hz)
• delayVector -> Atrasos discretos do canal de quatro percursos (s)
• gainVector -> Ganho médio de cada percurso (dB)
• LOSDopplerShift -> Efeito Doppler da componente de visada direta(LOS) (Hz)
• KFactor ->