Software Defined Radio (SDR) Using ADALM-PLUTO

This project demonstrates the use of the ADALM-PLUTO SDR device to perform signal transmission and reception in a flexible and software-configurable way. Using GNU Radio and Pluto SDR, this project explores real-time radio frequency signal processing including modulation, transmission, reception, and analysis.

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📡 Overview

Software Defined Radio (SDR) is a radio communication system where components typically implemented in hardware are instead implemented in software. This project uses the ADALM-PLUTO SDR by Analog Devices to experiment with:

• Real-time transmission and reception of signals
• Digital modulation and demodulation (e.g., QPSK, BPSK, FM)
• Spectrum visualization and analysis
• GNU Radio for building and running SDR flowgraphs

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🧰 Tools and Hardware

• ADALM-PLUTO SDR: A portable SDR device capable of operating from 325 MHz to 3.8 GHz.
• GNU Radio Companion: A graphical tool for creating signal processing flowgraphs.
• MATLAB / Simulink (optional): For advanced signal processing or model simulation.
• Antenna: For transmitting and receiving RF signals.
• Linux/Windows OS: Compatible with both for running SDR software.

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⚙️ Features

• Transmit test signals such as sine waves, QPSK, or custom waveforms
• Receive live signals from the air and decode them
• Analyze spectrum, power levels, and SNR in real-time
• Adjustable parameters: frequency, gain, bandwidth, sampling rate

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🧪 Sample Experiments

1. FM Transmission and Reception
2. QPSK Modulation and Demodulation
3. Spectrum Analyzer
4. Loopback Communication
5. Signal Filtering and Noise Suppression

Each experiment demonstrates a specific concept in SDR and is implemented using flowgraphs in GNU Radio.

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📁 Project Structure

SDR Using Adalm-Pluto/
├── QAM_Receiver/             # Matlab source files for the receiver
├── QAM_Transmitter/          # Matlab source files for the transmitter
├── README.md                 # Project description
└── Docs/                     # Project documentations

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🚀 Getting Started

1. Connect ADALM-PLUTO via USB.
2. Install required software:
   • GNU Radio
   • PlutoSDR drivers
3. Load .grc files into GNU Radio Companion.
4. Configure frequency, gain, and run the flowgraph.

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🔗 References

• ADALM-PLUTO Wiki
• GNU Radio Docs
• Pluto SDR MATLAB Support
• SDR# for Windows

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👨‍💻 Author

Manzoor Ambekar

Feel free to contribute or raise issues to enhance this project!