interfering power for all RBs

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  • #7696
    OMAR
    Participant

    Dear Moderators

    I am using System Level Simulator/femtocell

    could anyone tell me how the interfering power for all RBs (interf_power_all_RB), evaluated ?

    obj.wideband_SINR = 10*log10(sum(RX_total(:))/(sum(interf_power_all_RB(:))+thermal_noise_watts_per_half_RB*nSC));

    Regards

    #7717

    Hi Omar,

    The interf_power_all_RB is calulated after that the interferers are filtered out (neglected those with a power lower than a threshold with respect to serving BS signal), by considering the power allocation on per RB basis for each interferer (data and signaling RBs) divided by the corresponding macro-scale pathloss and shadow fading for each interfering link.

    Best regards,
    Fjolla

    #7720
    OMAR
    Participant

    Hi Fjolla Ademaj,..Thanks in advance

    does the interference power for each RB can be calculated by this equation ?
    Interference power for each RB = Power of RB – macroscopic pathloss…

    I set up the shadow fading as none…LTE_config.shadow_fading_type = ‘none’;

    Regards

    #7726

    Hi Omar,

    In this case you have to divide by the value of macroscopic path-loss. Please find the correpsonding code in the +network_elements/UE.m function filter_out_interferers_below_SINR().

    Best regards,
    Fjolla

    #7755
    OMAR
    Participant

    Dear Fjolla

    Thanks in advance, I have checked the User macroscopic path loss. SO, I have query….IS the obj.downlink_channel.macroscopic_pathloss calculate by using for example TS 36.942 pathloss model and by dual slop path loss model. I am simulating LTE_sim_main_launcher_demo_femtocells

    user_macroscopic_pathloss_lin = obj.downlink_channel.macroscopic_pathloss .* (10.^(obj.wall_loss/10)) ./ (10.^(obj.antenna_gain/10));

    regards

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