• Matlab
  • Simulink
  • NS3
  • OMNET++
  • NS2

To investigate and interpret the standards of the technologies, simulating the Li-Fi (Light Fidelity) systems in MATLAB is an outstanding approach. On the basis of spectrum bandwidth, velocity and security, it provides possible benefits compared to the conventional Wi-Fi, as it transfers data wirelessly through the medium of light. From modulation and transmission of signals to the reception and demodulation, simulate diverse perspectives of Li-Fi with the help of MATLAB which contains a wide range of toolkits and functions. In terms of MATLAB, we assist you to begin to work with simulating Li-Fi system by offering step-by-step procedures:

Step 1: Interpreting the Components of a Li-Fi System

Li-Fi system is typically divided into numerous main elements, they are:

  • Transmitter: It often deploys LEDs and incorporates modulation, data generation and transformation of electrical signals to light signals.
  • Channel: Specifically channels reflect the light signals which pass through the medium. It might include dispersions, reflections and LOS (Line-of-Sight) routes.
  • Receiver: Along with demodulation and data recovery, receivers use photodiodes to grab the light signals and transform them back into electrical signals.

Step 2: Configuring MATLAB for Li-Fi Simulation

  1. MATLAB Environment: Crucially examine whether you installed MATLAB on your system. Especially for modulation and signal processing assessments in Li-Fi simulations, the communication system toolbox is highly beneficial.
  2. Fundamental Script or Function: Consider where you will specify your Li-Fi system metrics and simulation measures, begin the process through developing an original script or function in MATLAB.

Step 3: Simulating the Transmitter

  1. Data Generation: To simulate the data which you intend to transfer, formulate a binary data stream.

DataBits = randi ([0 1], 1, 1000); % Generate 1000 random bits

  1. Modulation: A suitable modulation algorithm needs to be implemented. You can begin with popular options like OOK (On-Off Keying) for clarity.

ModSig = dataBits; %, the modulated signal is similar to the data bits for OOK.

  1. Convert to Optical Signal: As assuming the LED transmits when the signal is ‘1’ for on and off for ‘0’, this step might be exhibited in the simulation. The intensity phases and response time of the LED have to be considered practically.

Step 4: Simulating the Channel

  1. Path Loss: The optical path loss has to be designed. For detecting the path loss based on the distance and angle of incidence; a basic LOS framework can act as an initial point.

Distance = 2; % Distance in meters

PathLoss = 1 / (distance^2); % Simplified path loss model

Received Signal = modSig * pathLoss; % Employ path loss to the signal

  1. Add Noise: An ambient light and other noise source which implicates the signals must be encompassed.

Snr = 20; % Signal-to-noise ratio in dB

ReceivedSignalNoisy = awgn (receivedSignal, snr, ‘measured’); % Include white Gaussian noise

Step 5: Simulating the Receiver

  1. Signal Detection: From the noise, identify the signal. For OOK, an ordinary threshold might be applied.

Threshold = 0.5; % Example threshold

Detected Signal = receivedSignalNoisy > threshold;

  1. Demodulation: This step is very crucial for automated signal identification for OOK. Implement the relevant demodulation method for more sophisticated modulation policies.
  2. Data Recovery: Evaluate the performance by contrasting the detected signal with the novel data.

NumErrors = biterr (dataBits, detectedSignal); % the number of bit errors should be estimated.

Step 6: Analysis and Visualization

  • Performance Metrics: The performance metrics like SNR (Signal-to-Noise Ratio), BER (Bit Error Rate) and productivity needs to be estimated.
  • Visualize: To illustrate the simulation findings, outline the novel data, error metrics, transferred and received signal.


Subplot (4, 1, 1); plot (dataBits); title (‘Original Data’);

Subplot (4, 1, 2); plot (modSig); title (‘Modulated Signal’);

Subplot (4, 1, 3); plot (receivedSignalNoisy); title (‘Received Signal with Noise’);

Subplot (4, 1, 4); plot (detectedSignal); title (‘Detected Signal’);

How to develop a LiFi module on Network Simulator 3 (NS-3)?

For the purpose of simulating the activities of Li-Fi networks, a Li-Fi (Light Fidelity) module in NS-3 (Network Simulator 3) enhancement includes expanding the simulator with innovative architectures. As compared to conventional Radio Frequency (RF), Li-Fi demands diverse modeling perspectives and it utilizes VLC (Visible Light Communication) for wireless communications. In the process of creating a Li-Fi module in NS-3, detailed summary of the involved steps and observations are proposed by us:

  1. Accustom with NS-3 Architecture and Coding Standards

Make sure whether you are proficient with the coding measures and the executed current modules of the Ns-3 system, before you begin the development process. It might be beneficial resources, as NS-3 provides extensive documentation, source code of current modules such as Wi-Fi or LTE and seminars.

  1. Specify Li-Fi Module Demands and Scope

The perspectives of Li-Fi which you required to simulate must be established. It could incorporate the following components:

  • Channel Modeling: Li-Fi does not pierce dense objects and contain various propagation features by using light waves, as it is different from RF.
  • Device Models: Encompassing physical features and constraints, design Li-Fi transmitters like LEDs and receivers (photodiodes).
  • Modulation Schemes: In VLC, the general policies involved like CSK (Color Shift Keying, OOK (On-Off Keying) and PPM (Pulse Position Modulation).
  • MAC Layer Protocols: As regards the certain perspectives of VLC, specify the devices on how it enables the medium.
  1. Create the Physical Layer (PHY)

Regarding the communication process, it is crucial to begin with the PHY layer. By means of VLC medium, in what way the signals are transferred and received required to be analyzed.

  • Signal Propagation: In the environment, consider the factors such as absorption, reflection and refraction by objects and design the light propagation.
  • Noise and Interference: The sources of noise and disturbance have to be incorporated like ISI (Inter-Symbol Interference) and ambient light.
  1. Execute the MAC Layer

For your Li-Fi module, enhance the MAC layer protocol after constructing the PHY layer. Examine the devices on how it might distribute the medium, data transmission rates and collision mitigation. According to VLC (Visible Light Communication), Li-Fi can deploy novel protocols or traditional protocols with alterations.

  1. Synthesize with Higher Network Layers

In Ns-3, you must verify your Li-Fi module whether it communicates with higher layers of the network stack. To enact a role on huge network simulations, technologies, communicating with IP networks and various kinds of wireless networks, it enables your Li-Fi network.

  1. Testing and Validation
  • Unit Testing: To verify whether their activities are similar to your predictions, develop unit tests for each component.
  • Integration Testing: For the purpose of ensuring whether it synthesizes effectively with the central simulation engine and other modules, examine the entire module within NS-3.
  • Validation: Assure authentication by implementing another simulator tool which is prevalent in VLC or verify your module if it is opposed to actual data or findings.
  1. Documentation and Sharing

Incorporating the deployment process, models of simulations and metrics for configuration, extensively file your module. In the domain of VLC, assist the research and development process through offering your module back to the NS-3 community.

LIFI Simulation in MATLAB Topics

LIFI Simulation Project Topics

LiFi Projects are gaining popularity worldwide thanks to the innovative electronic devices being utilized. We constantly update with fresh ideas, techniques, and standards in the realm of LIFI Simulation Project Topics. Stay in touch with us we will guide you with best grade on your research journey.

  1. Demo of Hybrid LiFi/WiFi Network for an Indoor Environment
  2. Energy and Spectral Efficiency of Multi-Tier LiFi Networks
  3. Joint Position and Orientation Estimation in VCSEL-Based LiFi Networks: A Deep Learning Approach
  4. Analysis of Over-the-Air Time Synchronization for Industrial LiFi Networks
  5. An End-to-End Experimental Software-Defined LiFi and Wi-Fi Networks Integration Platform
  6. A Review of LiFi Technology: Principles and Applications
  7. LiFi-Voice: Experimental Analysis of Novel Voice/Audio Communication Methodology using Visible Light Communication
  8. Multi-Agent Reinforcement Learning for Autonomic SDN-enabled LiFi Attocellular Networks Slicing
  9. A Study on the SNR and SINR Performance of a LiFi Transmission System: From the Perspective of a Smart Classroom in Bangladesh
  10. Performance Evaluation Of Lifi-OCDMA System Using ZCC Code
  11. Development of a LiFi System for Under Water Communications
  12. Live Health Monitoring and Menace Detection Using Lifi And Blockchain Encryption
  13. Compressed Sensing for Feedback Generation in OFDM Based LiFi Systems
  14. Investigating the Benefits of Using Non-Orthogonal Multiple Access for Double Connetion LiFi-RF Networks
  15. Indoor Positioning System Using LiFi Based Network for Mobile Robots
  16. Deploying the Reliable UAV Swarm for Providing P2P LiFi Communications Considering Physical Obstacles: Method of Rectangles, Algorithms, and Tool
  17. Thin Receiver Freeform Lenslet Concentrator Array for LiFi
  18. Robust Deep Learning-Based Secret Key Generation in Dynamic LiFi Networks Against Concept Drift
  19. Design of a LiFi System for Short-Distance Communications
  20. Demo: 5G NR, Wi-Fi and LiFi multi-connectivity for Industry 4.0

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