Dear Kai,
For the channel models except the 3GPP 3D model, the channel matrix for the desired channel H_0 and for the interfering channels H_i is can be found from the UE object as:
obj.downlink_channel.secondary_fast_fading_models(1,1).ff_trace.H_0
obj.downlink_channel.secondary_fast_fading_models(1,1).ff_trace.H_i
Yes the typical urban channel model considers the doppler effect. There is a very good paper that might be helpful for you:
Yahong Rosa Zheng and Chengshan Xiao, “Simulation models with correct statistical properties for Rayleigh fading channels”
Best regards,
Fjolla