[Önem Yıldız]

Hi everyone,

I am using LTE Link Level 1.7_r1089 and I’m trying to understand of working principle of Best CQI scheduling algorithm. I run LTE_sim_batch.m file but there was no CQI_feedback in UE_output part of workspace as you see in Figure below. I used these lines in LTE_load_parameters.m to observe CQI feedback;

switch LTE_params.Bandwidth
case 1.4*10^6
LTE_params.UE_config.feedback = true;
LTE_params.UE_config.PMI_fb_granularity = 6;
LTE_params.UE_config.CQI_fb_granularity = 6;
LTE_params.UE_config.CQI_fb = true;

Actually I couldn’t see any command about CQI feedback in bestCqiSchedulerMMO.m file. How can I find CQI feedback from UEs in this simulator?

I am looking forward for your reply.
Best regards,
Önem

[Markus Gasser]

Dear Önem,
you can see the CQIs of the user(s) in
simulation_results.UE_specific(user_index).used_CQI
and the number of ressource blocks a user has been assigned to in every subframe (by the scheduler) in
simulation_results.UE_specific(user_index).RBs_assigned
where user_index should be replaced by your desired user’s index. For both variables the indexes are interpreted as (subframe_index, SNR_index, transmission_stream).

As a minimum working example just change
Simulation_type = 'LTE-A SUMIMO';
to
Simulation_type = 'MUSISO';
in LTE_sim_batch.m and run it.

Best regards,
Markus

• This reply was modified 5 years, 3 months ago by Markus Gasser.

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