Simulation about Multiuser MIMO

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  • #5192

    Because there is not multiuser MIMO demo file in sim_main_launcher_files, I simulate multiuser MIMO with LTE_sim_main_launcher_demo_basic. I change the codes to simulate multiuser MIMO.

    simSet = [5 4 2]; % tx_mode=5, nTx=4, nRx=2
    LTE_config.bandwidth  = 1.4e6;
    LTE_config.scheduler  = 'round robin MU';

    However, there are errors about “Matrix dimensions must agree.” in link_quality_model_v1.

    What configuration setting should I change to simulate multiuser MIMO?

    Best regards,


    Dear Yang,

    MU-MIMO only works with link_quality_model_v2. Please set LTE_config.trace_version = ‘v2’; in the sim main launcher file.



    Thank you very much, Mr.Martin. I have fixed the problem about link_quality_model_v2.
    However, I still have simulation problem about MU-MIMO. I have followed the requirement in the roundRobinSchedulerMU.m and added the text block into “+feedback_calculation.CLSM_PMI_feedback.m.” There are two problems.
    First, about the text block in roundRobinSchedulerMU.m

        max_ues = size(precoding_codebook.W, 1);
         for i_ =2:2

    Should the “for i_ =2:2” be modified to “for i_ =1:2”?
    Second, simulator shows errors about “Inner matrix dimensions must agree.” in network_elements.UE/calculate_per_layer_interference_power. How do I change the simulation(configuration) setting to simulate MU-MIMO successfully?

    Note: My version of Vienna SL simulator is v1.8r1375.
    Thank you.


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