# 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

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

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

Viewing 5 posts - 1 through 5 (of 5 total)
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