# Latest **URL:** https://vccsforum.nt.tuwien.ac.at/latest.md [Latest](https://vccsforum.nt.tuwien.ac.at/latest.md) · [Categories](https://vccsforum.nt.tuwien.ac.at/categories.md) · [Tags](https://vccsforum.nt.tuwien.ac.at/tags.md) --- ## [Need Help Academic License](https://vccsforum.nt.tuwien.ac.at/t/need-help-academic-license/565)
**Author:** [@mkm15](https://vccsforum.nt.tuwien.ac.at/u/mkm15)\ **Replies:** 0\ **Last updated:** [October 23, 2026, 5:37am UTC](https://vccsforum.nt.tuwien.ac.at/t/need-help-academic-license/565 "2026-10-23T05:37:44Z")
Dear Sir/Madam We are interested in using the 5G System-Level Simulator for academic and research purposes. We attempted to submit the signed license agreement (PDF) from our official university email account (mukeshkum… --- ## [Clarification on Power Allocation in CLSM Feedback SINR Calculation](https://vccsforum.nt.tuwien.ac.at/t/clarification-on-power-allocation-in-clsm-feedback-sinr-calculation/521)
**Author:** [@Nick\_Jay](https://vccsforum.nt.tuwien.ac.at/u/Nick_Jay)\ **Replies:** 1\ **Last updated:** [August 6, 2025, 10:21am UTC](https://vccsforum.nt.tuwien.ac.at/t/clarification-on-power-allocation-in-clsm-feedback-sinr-calculation/521 "2025-08-06T10:21:57Z")
Dear Vienna 5G Platform Developers, I have a question regarding the SINR calculation in CLSM feedback, specifically about how signal and interference powers are computed in the current implementation. In the current co… --- ## [Inquiry About Multi-Antenna and MIMO Gain Support in 5G SLS](https://vccsforum.nt.tuwien.ac.at/t/inquiry-about-multi-antenna-and-mimo-gain-support-in-5g-sls/517)
**Author:** [@Nick\_Jay](https://vccsforum.nt.tuwien.ac.at/u/Nick_Jay)\ **Replies:** 2\ **Last updated:** [July 23, 2025, 9:51am UTC](https://vccsforum.nt.tuwien.ac.at/t/inquiry-about-multi-antenna-and-mimo-gain-support-in-5g-sls/517 "2025-07-23T09:51:32Z")
Dear Developer Team, I hope you are doing well. I am using the 5G SLS simulation platform and encountered a warning stating, “The current implementation of DAS is not finished yet. Simulation may run into an error” –… --- ## [Create Base stations with three sectors, each one with different carriers](https://vccsforum.nt.tuwien.ac.at/t/create-base-stations-with-three-sectors-each-one-with-different-carriers/509)
**Author:** [@daniel.lima](https://vccsforum.nt.tuwien.ac.at/u/daniel.lima)\ **Replies:** 1\ **Last updated:** [June 26, 2025, 7:45am UTC](https://vccsforum.nt.tuwien.ac.at/t/create-base-stations-with-three-sectors-each-one-with-different-carriers/509 "2025-06-26T07:45:52Z")
Hello. I am interested in creating a 5G simulation in which there are some base stations, each with 3 sectors. I would like to assign different carriers to each sector. I have been trying to change the codes available i… --- ## [REM by 5g CELL](https://vccsforum.nt.tuwien.ac.at/t/rem-by-5g-cell/503)
**Author:** [@daniel.lima](https://vccsforum.nt.tuwien.ac.at/u/daniel.lima)\ **Replies:** 2\ **Last updated:** [June 11, 2025, 7:15am UTC](https://vccsforum.nt.tuwien.ac.at/t/rem-by-5g-cell/503 "2025-06-11T07:15:38Z")
Hello everyone. I would like to create a simulation in which I have a 5G base station with 3 sectors. Each sector is given by an 8x8 antenna. I would like to produce a REM (Radio environment map) per cell (sector). Thi… --- ## [Creation of dual polarized AntennaArray](https://vccsforum.nt.tuwien.ac.at/t/creation-of-dual-polarized-antennaarray/505)
**Author:** [@daniel.lima](https://vccsforum.nt.tuwien.ac.at/u/daniel.lima)\ **Replies:** 1\ **Last updated:** [June 11, 2025, 7:13am UTC](https://vccsforum.nt.tuwien.ac.at/t/creation-of-dual-polarized-antennaarray/505 "2025-06-11T07:13:05Z")
Hello. I have been analyzing the AntennaArray code. As indicated in the code, there is only single polarized. AntennaArray.m classdef AntennaArray \< networkElements.bs.Antenna %ANTENNAARRAY MIMO antennas accordin… --- ## [What is the girth of 5G NR LDPC code?](https://vccsforum.nt.tuwien.ac.at/t/what-is-the-girth-of-5g-nr-ldpc-code/489)
**Author:** [@c1119](https://vccsforum.nt.tuwien.ac.at/u/c1119)\ **Replies:** 9\ **Last updated:** [June 10, 2025, 11:25am UTC](https://vccsforum.nt.tuwien.ac.at/t/what-is-the-girth-of-5g-nr-ldpc-code/489 "2025-06-10T11:25:16Z")
I searched the web and could not find any reference on the girth of 5G NR LDPC code. Could someone please help me? --- ## [Path Loss Model in RIS scenario](https://vccsforum.nt.tuwien.ac.at/t/path-loss-model-in-ris-scenario/430)
**Author:** [@RoaaAli](https://vccsforum.nt.tuwien.ac.at/u/RoaaAli)\ **Replies:** 11\ **Last updated:** [May 20, 2025, 4:16pm UTC](https://vccsforum.nt.tuwien.ac.at/t/path-loss-model-in-ris-scenario/430 "2025-05-20T16:16:15Z")
Hi sir, I actived scStr.topology.geometricLayout =true and use pathloss model type =urban what effect does these prameters when choose urban scStr.simulation.pathLossModel.alpha = 1; scStr.simulation.path… --- ## [Performance Optimization for Large-Scale Slot Simulations (10^7-10^9 slots)](https://vccsforum.nt.tuwien.ac.at/t/performance-optimization-for-large-scale-slot-simulations-10-7-10-9-slots/495)
**Author:** [@Nick\_Jay](https://vccsforum.nt.tuwien.ac.at/u/Nick_Jay)\ **Replies:** 1\ **Last updated:** [May 2, 2025, 7:44am UTC](https://vccsforum.nt.tuwien.ac.at/t/performance-optimization-for-large-scale-slot-simulations-10-7-10-9-slots/495 "2025-05-02T07:44:18Z")
Dear Vienna 5G System Simulator Developers, I’m currently working on simulating extremely large numbers of slots (on the order of 10^7-10^9) to observe packet drop behavior under existing scheduling strategies. My curr… --- ## [Unusually Large Channel Matrix for Omnidirectional Antennas Compared to Array Antennas in TR38901Container](https://vccsforum.nt.tuwien.ac.at/t/unusually-large-channel-matrix-for-omnidirectional-antennas-compared-to-array-antennas-in-tr38901container/494)
**Author:** [@Nick\_Jay](https://vccsforum.nt.tuwien.ac.at/u/Nick_Jay)\ **Replies:** 6\ **Last updated:** [May 2, 2025, 7:31am UTC](https://vccsforum.nt.tuwien.ac.at/t/unusually-large-channel-matrix-for-omnidirectional-antennas-compared-to-array-antennas-in-tr38901container/494 "2025-05-02T07:31:19Z")
Dear Vienna 5G SL Developers, I’ve encountered an unexpected behavior when comparing channel matrices (H) generated by the smallScaleFading.TR38901Container for ​​omnidirectional antennas​​ versus ​​array antennas​​. Th… --- ## [A question for the PMI calculation in +feedback/ClsmFeedback.m](https://vccsforum.nt.tuwien.ac.at/t/a-question-for-the-pmi-calculation-in-feedback-clsmfeedback-m/490)
**Author:** [@Nick\_Jay](https://vccsforum.nt.tuwien.ac.at/u/Nick_Jay)\ **Replies:** 3\ **Last updated:** [March 26, 2025, 10:22am UTC](https://vccsforum.nt.tuwien.ac.at/t/a-question-for-the-pmi-calculation-in-feedback-clsmfeedback-m/490 "2025-03-26T10:22:34Z")
Hello, I am currently focusing on the feedback of system simulation. It seems there is a mistake in the function " \[pmi, SINRchosen\] = calculatePMIlayer(obj, codeBook, iRBFreq) " of +feedback/ClsmFeedback.m. Therefore, … --- ## [A question for the channel generation in smallScaleFading/TR38901Container.m](https://vccsforum.nt.tuwien.ac.at/t/a-question-for-the-channel-generation-in-smallscalefading-tr38901container-m/483)
**Author:** [@Nick\_Jay](https://vccsforum.nt.tuwien.ac.at/u/Nick_Jay)\ **Replies:** 2\ **Last updated:** [March 8, 2025, 12:54pm UTC](https://vccsforum.nt.tuwien.ac.at/t/a-question-for-the-channel-generation-in-smallscalefading-tr38901container-m/483 "2025-03-08T12:54:10Z")
Hello, I have a question for the code in smallScaleFading/TR38901Container. As for the calculation of parameters DS/ASD/ASA/ZSD/ZSA, function 1+log10(fc) is used in smallScaleFading/TR38901Container. However, I have che… --- ## [How to increase the number of layers](https://vccsforum.nt.tuwien.ac.at/t/how-to-increase-the-number-of-layers/438)
**Author:** [@HongRak](https://vccsforum.nt.tuwien.ac.at/u/HongRak)\ **Replies:** 1\ **Last updated:** [December 9, 2024, 2:19pm UTC](https://vccsforum.nt.tuwien.ac.at/t/how-to-increase-the-number-of-layers/438 "2024-12-09T14:19:14Z")
Hello, I’m simulating MIMO System. But MIMO nLyaver values alwas 1. please sugesst what changes ar required in the code. Senarios Code: Antennas : nAntElement = 2; antennaArray = parameters.basestation.antennas.Ante… --- ## [Channel matrix](https://vccsforum.nt.tuwien.ac.at/t/channel-matrix/196)
**Author:** [@walaa\_hussein](https://vccsforum.nt.tuwien.ac.at/u/walaa_hussein)\ **Replies:** 2\ **Last updated:** [December 2, 2024, 7:53am UTC](https://vccsforum.nt.tuwien.ac.at/t/channel-matrix/196 "2024-12-02T07:53:23Z")
hi, i have question about your simulator 5g link level …when i run the generic senior the results just BER or throuhgput or mse for up or downlink so i need the values of channel matrix , frequencies and time slot . ca… --- ## [Why Throughput is Same for Different Type of Traffic](https://vccsforum.nt.tuwien.ac.at/t/why-throughput-is-same-for-different-type-of-traffic/433)
**Author:** [@mkm15](https://vccsforum.nt.tuwien.ac.at/u/mkm15)\ **Replies:** 2\ **Last updated:** [November 20, 2024, 10:23pm UTC](https://vccsforum.nt.tuwien.ac.at/t/why-throughput-is-same-for-different-type-of-traffic/433 "2024-11-20T22:23:00Z")
Hello, I’m simulating different traffic types (Video, HHTP, Gaming, VoIP) in the OpenStreetMap.m. But every time throughput is the same. Please, suggest what changes are required in the code. Thanks. Users5G = parame… --- ## [RIS phase shift and beamforming matrix](https://vccsforum.nt.tuwien.ac.at/t/ris-phase-shift-and-beamforming-matrix/447)
**Author:** [@walaa\_hussein](https://vccsforum.nt.tuwien.ac.at/u/walaa_hussein)\ **Replies:** 1\ **Last updated:** [November 11, 2024, 2:37pm UTC](https://vccsforum.nt.tuwien.ac.at/t/ris-phase-shift-and-beamforming-matrix/447 "2024-11-11T14:37:56Z")
dear sir, i have questions about the RIS scenario : First the RIS elements all passive or we can change to semi-passive . second i want to know how you calculate the phase shift matrix (its random)and beamforming … give … --- ## [New Release v1.4 - Vienna 5G SL Simulator](https://vccsforum.nt.tuwien.ac.at/t/new-release-v1-4-vienna-5g-sl-simulator/297)
**Author:** [@cmendoza](https://vccsforum.nt.tuwien.ac.at/u/cmendoza)\ **Replies:** 4\ **Last updated:** [October 28, 2024, 12:05pm UTC](https://vccsforum.nt.tuwien.ac.at/t/new-release-v1-4-vienna-5g-sl-simulator/297 "2024-10-28T12:05:54Z")
Dear Community, We are happy to announce a new release of the Vienna 5G System Level Simulator, that is version 1.4. The simulator is provided for free under an academic, non-commercial use license. Please consider the… --- ## [RIS Scenario](https://vccsforum.nt.tuwien.ac.at/t/ris-scenario/414)
**Author:** [@RoaaAli](https://vccsforum.nt.tuwien.ac.at/u/RoaaAli)\ **Replies:** 8\ **Last updated:** [October 15, 2024, 10:52am UTC](https://vccsforum.nt.tuwien.ac.at/t/ris-scenario/414 "2024-10-15T10:52:41Z")
Hi sir, I chose modulation.precoding=‘digital’ ,when i implement ,appear Warning: For fully digital precoding the number of port is set equal to the number of antennas In Parameters/SimulationParameters/checkParamete… --- ## [Users with different Type of Traffic Model](https://vccsforum.nt.tuwien.ac.at/t/users-with-different-type-of-traffic-model/427)
**Author:** [@Alessandro\_R](https://vccsforum.nt.tuwien.ac.at/u/Alessandro_R)\ **Replies:** 1\ **Last updated:** [September 9, 2024, 6:52am UTC](https://vccsforum.nt.tuwien.ac.at/t/users-with-different-type-of-traffic-model/427 "2024-09-09T06:52:55Z")
Hello, I’m trying to define users with different type of traffic model in the openStreetMap.m scenario. Based on the code implemented in the script and listed below, it looks like all the users should have the same par… --- ## [Proportional Fair scheduler implementation](https://vccsforum.nt.tuwien.ac.at/t/proportional-fair-scheduler-implementation/287)
**Author:** [@gabriel.andrade](https://vccsforum.nt.tuwien.ac.at/u/gabriel.andrade)\ **Replies:** 3\ **Last updated:** [September 3, 2024, 1:59pm UTC](https://vccsforum.nt.tuwien.ac.at/t/proportional-fair-scheduler-implementation/287 "2024-09-03T13:59:37Z")
Hello, I would like to know if there is any implementation of Proportional Fair scheduler available for Vienna 5G SLS. I noticed that there is an implementation for Vienna LTE SLS. Does anyone have any tips for adapti… --- ## [May I request access to the LTE-A System Level Simulator v2.0 Q3-2018](https://vccsforum.nt.tuwien.ac.at/t/may-i-request-access-to-the-lte-a-system-level-simulator-v2-0-q3-2018/409)
**Author:** [@qishy](https://vccsforum.nt.tuwien.ac.at/u/qishy)\ **Replies:** 1\ **Last updated:** [August 19, 2024, 7:40am UTC](https://vccsforum.nt.tuwien.ac.at/t/may-i-request-access-to-the-lte-a-system-level-simulator-v2-0-q3-2018/409 "2024-08-19T07:40:54Z")
Dear researchers, I found that the download link for the LTE-A System Level Simulator v2.0 Q3-2018 version of the simulator provided on your official website is no longer valid.I would greatly appreciate it if you could… --- ## [Throughput With HTTP traffic model](https://vccsforum.nt.tuwien.ac.at/t/throughput-with-http-traffic-model/388)
**Author:** [@NK-19](https://vccsforum.nt.tuwien.ac.at/u/NK-19)\ **Replies:** 4\ **Last updated:** [August 5, 2024, 1:12am UTC](https://vccsforum.nt.tuwien.ac.at/t/throughput-with-http-traffic-model/388 "2024-08-05T01:12:23Z")
Hello Everyone ! I have a problem when i want to have Throughput result with http traffic model, I have the following message : “Warning: Throughput results will not be shown since there are no active users.” Please, … --- ## [About the interference calculation model in SINR calculations](https://vccsforum.nt.tuwien.ac.at/t/about-the-interference-calculation-model-in-sinr-calculations/350)
**Author:** [@syin\_liu](https://vccsforum.nt.tuwien.ac.at/u/syin_liu)\ **Replies:** 3\ **Last updated:** [July 30, 2024, 6:23am UTC](https://vccsforum.nt.tuwien.ac.at/t/about-the-interference-calculation-model-in-sinr-calculations/350 "2024-07-30T06:23:37Z")
Hello, I would like to ask how the interference in the lite SINR is calculated in the scenario of heterogeneous network, and whether the relationship between layers and interlayers is taken into account when calculating … --- ## [How to run scheduling algorithm in the simulator](https://vccsforum.nt.tuwien.ac.at/t/how-to-run-scheduling-algorithm-in-the-simulator/372)
**Author:** [@RekhaS](https://vccsforum.nt.tuwien.ac.at/u/RekhaS)\ **Replies:** 1\ **Last updated:** [May 29, 2024, 10:53am UTC](https://vccsforum.nt.tuwien.ac.at/t/how-to-run-scheduling-algorithm-in-the-simulator/372 "2024-05-29T10:53:53Z")
Hi, i am new to Vienna sytem level simulator, how to run the scheduling algorithm please guide me. thank you --- ## [Interference Analysis in 6G](https://vccsforum.nt.tuwien.ac.at/t/interference-analysis-in-6g/392)
**Author:** [@sarasualiheen12](https://vccsforum.nt.tuwien.ac.at/u/sarasualiheen12)\ **Replies:** 5\ **Last updated:** [July 12, 2024, 8:44am UTC](https://vccsforum.nt.tuwien.ac.at/t/interference-analysis-in-6g/392 "2024-07-12T08:44:38Z")
Hello everyone, I am using Vienna 5G simulator for calculating interference in 6G, can anybody guide me in this regard?anybody worked on it? --- ## [Scheduling](https://vccsforum.nt.tuwien.ac.at/t/scheduling/382)
**Author:** [@RekhaS](https://vccsforum.nt.tuwien.ac.at/u/RekhaS)\ **Replies:** 3\ **Last updated:** [July 10, 2024, 10:14am UTC](https://vccsforum.nt.tuwien.ac.at/t/scheduling/382 "2024-07-10T10:14:40Z")
can you share the details of scheduling parameter because i want to do text scheduling so what input parameters i must consider --- ## [Scheduling concept](https://vccsforum.nt.tuwien.ac.at/t/scheduling-concept/375)
**Author:** [@RekhaS](https://vccsforum.nt.tuwien.ac.at/u/RekhaS)\ **Replies:** 1\ **Last updated:** [June 3, 2024, 8:36am UTC](https://vccsforum.nt.tuwien.ac.at/t/scheduling-concept/375 "2024-06-03T08:36:13Z")
sir can you please provide me 1 simple basic code on scheduling i want to do analysis of how the users get distributed and allocation of resources happen --- ## [Community association mechanism](https://vccsforum.nt.tuwien.ac.at/t/community-association-mechanism/352)
**Author:** [@syin\_liu](https://vccsforum.nt.tuwien.ac.at/u/syin_liu)\ **Replies:** 2\ **Last updated:** [May 3, 2024, 8:51am UTC](https://vccsforum.nt.tuwien.ac.at/t/community-association-mechanism/352 "2024-05-03T08:51:28Z")
Hello, I saw the introduction of cell correlation in Chapter 7.5 of the 5G System-Level Simulation Manual, but I am not sure whether to use the reference power maximum cell as the service cell or the broadband SINR maxim… --- ## [Open Street Map Parameters](https://vccsforum.nt.tuwien.ac.at/t/open-street-map-parameters/351)
**Author:** [@Sophia](https://vccsforum.nt.tuwien.ac.at/u/Sophia)\ **Replies:** 1\ **Last updated:** [April 29, 2024, 7:25am UTC](https://vccsforum.nt.tuwien.ac.at/t/open-street-map-parameters/351 "2024-04-29T07:25:42Z")
Dears, I am getting errors while simulating launcherOpenStreetMap. I have only changed the latitude and longitude parameters in the OpenStreetMap scenario configurations as per the lines below; %% Blockages % The foll… --- ## [The order in which the Vienna 5G simulator runs](https://vccsforum.nt.tuwien.ac.at/t/the-order-in-which-the-vienna-5g-simulator-runs/345)
**Author:** [@syin\_liu](https://vccsforum.nt.tuwien.ac.at/u/syin_liu)\ **Replies:** 2\ **Last updated:** [April 25, 2024, 4:46am UTC](https://vccsforum.nt.tuwien.ac.at/t/the-order-in-which-the-vienna-5g-simulator-runs/345 "2024-04-25T04:46:49Z")
Hello, could you please introduce the overall running sequence of this simulator (that is, from the scene setting, after the base station user setting is completed, how to get the SINR and throughput of the model), at pr… [Next page](https://vccsforum.nt.tuwien.ac.at/latest.md?page=1)