Can a fading channel with multiple modulation schemes be implemented in simulink and simevents?

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Court 2015-11-6

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https://ww2.mathworks.cn/matlabcentral/answers/253546-can-a-fading-channel-with-multiple-modulation-schemes-be-implemented-in-simulink-and-simevents

关闭： MATLAB Answer Bot 2021-8-20

I have a fading channel scenario that I am having trouble solving. I want to model a communication channel with a two different modulation schemes, BPSK and QPSK and a fading channel. For example, the QPSK modulation is the default modulation, but if the SNR of the channel reaches a certain threshold, then it should automatically change the modulation to BPSK in 'real-time'. Is it possible to create a fading channel with changing SNR in Simevents using the AWGN block (or some other block)? And if so, how would you implement a feedback to then switch between the modulation schemes while the simulation is running based on a SNR threshold? My current system is implemented in Simulink, but I also have access to Simevents if necessary.