marvin42
Newbie level 3
sui model wimax
Hi.
I'm doing a model of PHY interface of fixed Wimax in Simulink for my graduation project, and some of the simulation results are pretty baffling.
Using SUI 4 - 6 with any kind of modulation always produces a kind of, in lack of a better name, a saturation of BER in the BER vs. SNR plot, at around 5e-6, as illustrated here, with 16-QAM (coderate 3/4):
Also, when using BPSK, all of the implemented channel models behave the same (including AWGN). Here's the image:
I am using the Communication Blocket built-in Multipath Rician Fading with the parameters of SUI models to model them - the only thing I am disregarding is the Doppler spectrum of the model description. But I doubt that causes the problems.
I checked every block in the model trying to figure out what's wrong, but still have no idea. Any help will be greatly appreciated.
Attached inside the archive is the model and all the needed supporting files, if it can help... The captions are all in Croatian, but I think the model is pretty self-explanatory. Nevertheless, if anyone cares, I can translate them to English.
TIA
Hi.
I'm doing a model of PHY interface of fixed Wimax in Simulink for my graduation project, and some of the simulation results are pretty baffling.
Using SUI 4 - 6 with any kind of modulation always produces a kind of, in lack of a better name, a saturation of BER in the BER vs. SNR plot, at around 5e-6, as illustrated here, with 16-QAM (coderate 3/4):
Also, when using BPSK, all of the implemented channel models behave the same (including AWGN). Here's the image:
I am using the Communication Blocket built-in Multipath Rician Fading with the parameters of SUI models to model them - the only thing I am disregarding is the Doppler spectrum of the model description. But I doubt that causes the problems.
I checked every block in the model trying to figure out what's wrong, but still have no idea. Any help will be greatly appreciated.
Attached inside the archive is the model and all the needed supporting files, if it can help... The captions are all in Croatian, but I think the model is pretty self-explanatory. Nevertheless, if anyone cares, I can translate them to English.
TIA