Tagged: @mariam Mussbah
- This topic has 12 replies, 5 voices, and was last updated 7 months ago by Mariam Mussbah.
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28. August 2018 at 9:56 #11103ahmetemirParticipant
Hello,
I’m new on 5G Link Level Simulator. On main.m at Line 14 I selected simulationScenario = ‘NOMA’. But program gave error as:
Error using ChannelEstimation.PilotSymbolAidedChannelEstimation (line 99)
Too many input arguments.
Error in Elements.Link/updateLink (line 114) ChannelEstimator = ChannelEstimation.PilotSymbolAidedChannelEstimation( ...
Error in main (line 44) parfor iSweep = 1:length(simParams.simulation.sweepValue) % this may be 'for' or 'parfor'
Caused by: Error using repmat Too many input arguments.
I have MATLAB R2013a. How could I overcome of this problem?
Would you give me avices please?
Best Regards…
14. September 2018 at 7:12 #11192Stefan PratschnerKeymasterHi,
sorry for my late response.
Do you have Matlab’s parallel computing toolbox? If this is not the case, please change “parfor” in line 44 of main.m to a simple “for”. Even if you have the toolbox, this is beneficial for debugging.
best
Stefan2. October 2018 at 8:58 #11301ahmetemirParticipantI remove MATLAB 2013a then I set up newer version of MATLAB, it works thanks for your advices. Thanks for your advices
4. November 2020 at 6:56 #14342Roaa AliParticipantHello,
I’m new on 5G Link Level Simulator I have version 1.2 and MATLAB R2018b. On main.m at Line 14 I selected simulationScenario = ‘NOMA’.when change codebook from LTE TO 5G
scStr.simulation.codebook = ‘5G’;
But program gave error as:Error using Parameters.SimulationParameters/initializeLinks (line 1672)
The configuration for the number of horizontal and vertical antennas does not fit the total number of antennas.Error in main (line 60)
Links = simParams.initializeLinks(Links, BS, UE); %#ok
Would you give me advices please?Best regards
Roaa4. November 2020 at 8:59 #14344Mariam MussbahKeymasterDear Roaa,
The error message you got indicates that the total number of antennas simulation.nAntennasBaseStation and the antenna configuration simulation.antennaConfiguration do not fit. For the 5G codebook, the total number of antenna has to be equal to 2*N_1*N_2.
Best,
Mariam22. September 2021 at 20:41 #15250FarhanParticipantDear Mariam,
In MassiveMiMO, For 5G codebook, can you please share sample parameters?
scStr.simulation.codebook = ‘5G’;
scStr.simulation.nAntennasBaseStation = ?
scStr.simulation.antennaConfiguration = ?
scStr.simulation.nAntennasUser = ?27. September 2021 at 8:39 #15261Mariam MussbahKeymasterDear Farhan,
The precoding for multi-user MIMO is not codebook-based. The codebook is only used when you simulate single-user MIMO with PMI feedback activated.
Best,
Mariam30. September 2021 at 16:00 #15285FarhanParticipantThanks Mariam,
What about layerMapping.mode? if we set it to 5G instead of LTE while keeping scStr.simulation.codebook = ‘LTE’; for massiveMIMO scenario? What impact will it have?
Regards,
Farhan18. October 2021 at 8:47 #15347Mariam MussbahKeymasterDear Farhan,
The complex-valued symbols of each codeword are mapped onto one or several layers according to the layer mapping mode. For UEs equipped with only one antenna, this parameter has no impact.
Best regards,
Mariam14. November 2021 at 14:24 #15439FarhanParticipantDear Mariam,
In MassiveMIMO simulation scenario, both parameters below are set to LTE. If I changed them to 5G will it have any impact on simulation result? We do have UEs equipped with only one antenna in this scenario.
scStr.simulation.codebook = ‘LTE’;
scStr.layerMapping.mode = ‘LTE’;Moreover in case if the 5G codebook is selected, can I still use scStr.simulation.antennaConfiguration = {[4,4]}; ?
23. November 2021 at 7:12 #15476Mariam MussbahKeymasterDear Farhan,
For multi-user MIMO, the precoding is not codebook-based; therefore, the codebook choice has no impact on the simulation. For the 5G codebook and single-user MIMO, you can find all possible antenna configurations listed in the generic scenario.
The layer mapping table defines the rules mapping the codewords onto the layers. Since in your simulations, you are considering UEs with only one layer (max. number of layers <= number of antennas), layer mapping has no impact in your scenario.
Best,
Mariam24. November 2021 at 0:15 #15479FarhanParticipantDear Mariam,
Thanks for your reply. In this Massive MIMO Scenario, ZF is performing better as compared to MRT, which is a well known fact and have been reported in literature. My question here is that what was the motivation behind setting up this scenario or if I say what is the new insight this scenario can provide. Can you suggest any new ideas which can be done using this scenario?
Regards,
Farhan25. November 2021 at 7:17 #15483Mariam MussbahKeymasterDear Farhan,
The motivation behind the massive MIMO scenario is to demonstrate the simulator’s massive MIMO capabilities and give the users an idea about how to set up a massive MIMO scenario.
Best,
Mariam -
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