📡 5G Signal Propagation and Noise Simulation (MATLAB)

This repository simulates the behavior of 5G signals in the presence of multipath fading and noise using MATLAB's 5G Toolbox. The project provides a platform to evaluate how real-world channel impairments affect signal integrity, helping in better understanding and design of 5G communication systems.

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🚀 Features

• 📶 5G NR Waveform Generation using 16-QAM and 15 kHz subcarrier spacing
• 🌆 Channel Modeling with TDL-C profile to emulate urban macro-cell environments
• 🌪️ Noise Simulation using Additive White Gaussian Noise (AWGN)
• 📊 Performance Metrics: Signal-to-Noise Ratio (SNR) and Bit Error Rate (BER)
• 📈 Visualizations: Time-domain and frequency-domain signal analysis

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📁 Project Structure

• init.m: Main script to generate the 5G NR waveform, apply channel effects, and add noise.
• BER.m: Script to compute and display the Bit Error Rate (BER).
• Noise.m:Simulation uses 16-QAM modulated 5G NR waveform over TDL-C and CDL-C channels with 20 dB AWGN to compare frequency- and time-domain performance.
• frequency&time domain channel modeling.mlx:Simulation compares frequency- and time-domain modeling of 5G NR PDSCH over CDL channel based on EVM and execution time.
• Basic 5g Nr.m:Simulates a 5G NR downlink waveform with 16QAM, TDL-C fading, and AWGN at 20 dB SNR, then measures the resulting SNR.
• Visualizations: Plots showcasing signal behavior under different conditions.

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🛠️ Methodologies

🔷 Waveform Generation

• Modulation: 16-QAM
• Subcarrier Spacing: 15 kHz
• Resource Blocks: 100

📡 Channel Configuration

• Channel Model: TDL-C,DCL-C
• Delay Spread: 300 ns
• Doppler Shift: 50 Hz

🌐 Noise Injection

• Target SNR: 20 dB
• Noise Type: AWGN

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📊 Results Summary

⏱️ Time Domain

• Original Signal: Clean and undistorted
• After Channel: Delay and attenuation observed
• After Noise: Notable signal distortion

🔉 Frequency Domain

• Original: Spectrum intact
• Channel: Slight frequency spreading
• Noise: Noticeable spectrum corruption

📈 Metrics

• Measured SNR: 20.0041 dB
• BER: 0.50325 (Uncoded)

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Demonstration

Demonstration Video

🧪 Usage Instructions

1. Clone this repository:

   git clone https://github.com/smit455/5G-Lab-Project.git
   cd 5G-Lab-Project
   

2. Open MATLAB and navigate to the project directory.

Acknowledgment

• Special thanks to Dr. Bhupendra Kumar for his guidance and insights into 5G technology.