[Cissy]

Dear Sir or Madam,
I am using the ‘LTE_sim_main_launcher_demo_basic’ file in version 1.8 for simulation. And I am studying the effect of different parameters to the UE throughput, such as bandwidth, eNodeB_tx_power, UE speed, UE_receiver_noise_figure. However I found the UE throughput only changes when the bandwidth changes, when I simulated the bandwidth from 5MHz to 20MHz, the UE throughput increased too. When I changed the other parameters like eNodeB transmit power or UE speed, receiver noise figure, the UE throughput nearly kept in the same value, so I could not figure out how these parameters influencing the UE throughput. And the code is in the following, by the way when I simulate for one parameter I will set other parameters into default value.

So could please give me some suggestions for why the UE throughput are always the same whatever I change the parameters except the bandwidth?

Sincerely,
Cissy

Codes:

close all force;
clc;
cd ..

simulation_type = ‘tri_sector_tilted’;

% Possible simulation types now:
% – ‘tri_sector’
% – ‘tri_sector_tilted’, ‘tri_sector_tilted_4x2’, ‘tri_sector_tilted_4x4’
% – ‘tri_sector_plus_femtocells’
% – ‘six_sector_tilted’
% – ‘capesso_pathlossmaps’
% – ‘omnidirectional_eNodeBs’
% – ‘tri_sector_tilted_traffic’

simSet = [1 1 1];

%% Base configuration
LTE_config = LTE_load_params(simulation_type);
LTE_config.eNodeB_tx_power = 40 ; % 46 dBm
LTE_config.bandwidth = 5e6;
% LTE_config.network_source = ‘capesso’;
LTE_config.pathlosses = [0 10 10];
% LTE_config.scheduler = ‘prop fair Sun’; % prop fair Sun % round robin
% LTE_config.channel_model.type = ‘TU’;
% LTE_config.UE_speed = 5/3.6;
% LTE_config.UE_distribution = ‘constant UEs per ROI’;
LTE_config.nr_eNodeB_rings = 2;
LTE_config.network_geometry = ‘regular_hexagonal_grid’;
LTE_config.shadow_fading_type = ‘none’;
LTE_config.UE_per_eNodeB = 20;
LTE_config.simulation_time_tti = 50;
%LTE_config.UE.receiver_noise_figure = 9;

%
% % Misc options
% LTE_config.non_parallel_channel_trace = true;
LTE_config.show_network = 0;
% LTE_config.channel_model.trace_length = 1;
LTE_config.keep_UEs_still = true;
LTE_config.compact_results_file = true;
% LTE_config.compact_results_file = 3;
LTE_config.delete_ff_trace_at_end = true;
% LTE_config.UE_cache = false;
% LTE_config.pregenerated_ff_file = ‘auto’;
% LTE_config.cache_network = false;

LTE_config.seedRandStream = 0;

LTE_config.nTX = simSet(2);
LTE_config.nRX = simSet(3);
LTE_config.tx_mode = simSet(1);
ticIdx = tic;
output_results_file = LTE_sim_main(LTE_config);
time = toc(ticIdx);

simulation_data = load(output_results_file);
GUI_handles.aggregate_results_GUI = LTE_GUI_show_aggregate_results(simulation_data);
GUI_handles.positions_GUI = LTE_GUI_show_UEs_and_cells(simulation_data,GUI_handles.aggregate_results_GUI);

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