https://github.com/jelhamm/line-codes-for-communication-systems

"This repository showcases a comprehensive implementation of Line Codes for Communication Systems, featuring a full suite of methods meticulously crafted to enhance the understanding and practical application of communication protocols."
https://github.com/jelhamm/line-codes-for-communication-systems

bipolar bipolar-nrz bipolar-rz computer-networks data-communications digital-communication digital-communication-system jupyter-notebook line-codes line-coding paper polar-codes polar-nrz polar-rz python simulations unipolar unipolar-nrz unipolar-rz

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"This repository showcases a comprehensive implementation of Line Codes for Communication Systems, featuring a full suite of methods meticulously crafted to enhance the understanding and practical application of communication protocols."

• Host: GitHub
• URL: https://github.com/jelhamm/line-codes-for-communication-systems
• Owner: jElhamm
• License: mit
• Created: 2024-02-29T17:38:18.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-06-20T20:40:11.000Z (12 months ago)
• Last Synced: 2024-06-21T14:56:37.660Z (12 months ago)
• Topics: bipolar, bipolar-nrz, bipolar-rz, computer-networks, data-communications, digital-communication, digital-communication-system, jupyter-notebook, line-codes, line-coding, paper, polar-codes, polar-nrz, polar-rz, python, simulations, unipolar, unipolar-nrz, unipolar-rz
• Language: Jupyter Notebook
• Homepage:
• Size: 8.8 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Line Codes for Communication Systems

   This repository provides implementations of various line coding techniques used in [communication systems](https://en.wikipedia.org/wiki/Communications_system#:~:text=A%20communications%20system%20or%20communication,to%20form%20an%20integrated%20whole.).Line coding is a process of converting [digital data](https://en.wikipedia.org/wiki/Digital_data#:~:text=Digital%20data%2C%20in%20information%20theory,a%20string%20of%20alphanumeric%20characters.) to [digital signals](https://en.wikipedia.org/wiki/Digital_signal).

   This repository is structured into three main categories: 'Bipolar', 'Polar', and 'Unipolar', each containing methods for 'Non-Return-to-Zero (NRZ)' and 'Return-to-Zero (RZ)' coding.

## Line Coding Techniques

   * [Bipolar Line Coding](Bipolar)

      1. Bipolar NRZ:

         - The signal level alternates between positive and negative values for successive 1s.

         - Zero level for 0s.

         - More efficient use of bandwidth compared to unipolar line coding.

      2. Bipolar RZ:

         - Similar to Bipolar NRZ but returns to zero between each bit.

         - Provides a clearer timing for synchronization but requires more bandwidth.

   * [Polar Line Coding](Polar)

      1. Polar NRZ:

         - Uses two levels of voltage, positive and negative, to represent binary 1 and 0.

         - Does not return to zero between bits, thus more bandwidth efficient.

      2. Polar RZ:

         - Similar to Polar NRZ but returns to zero between each bit.

         - Easier to synchronize but requires more bandwidth.

   * [Unipolar Line Coding](Unipolar)

      1. Unipolar NRZ:

         - Uses a single non-zero voltage level to represent binary 1.

         - Zero voltage level represents binary 0.

         - Simplest form of line coding but can have DC component issues.

      2. Unipolar RZ:

         - Similar to Unipolar NRZ but returns to zero between each bit.

         - Easier to synchronize but requires more bandwidth.

## Repository Structure

   The repository is organized into the following directories and files:

   - Bipolar

       - [Bipolar_RZ.ipynb:](Bipolar/Bipolar_RZ.ipynb) Implementation of Bipolar Return-to-Zero (RZ) line coding.

       - [Bipolar_NRZ.ipynb:](Bipolar/Bipolar_NRZ.ipynb) Implementation of Bipolar Non-Return-to-Zero (NRZ) line coding.

   - Polar

       - [Polar_RZ.ipynb:](Polar/Polar_RZ.ipynb) Implementation of Polar Return-to-Zero (RZ) line coding.

       - [Polar_NRZ.ipynb:](Polar/Polar_NRZ.ipynb) Implementation of Polar Non-Return-to-Zero (NRZ) line coding.

   - Unipolar

       - [UNPolar_RZ.ipynb:](Unipolar/UNPolar_RZ.ipynb.ipynb) Implementation of Unipolar Return-to-Zero (RZ) line coding.

       - [UNPolar_NRZ.ipynb:](Unipolar/UNPolar_NRZ.ipynb) Implementation of Unipolar Non-Return-to-Zero (NRZ) line coding.

    

## References

   * The concepts and explanations of the following article are used:

      * [Line Codes for Communication Systems - Original Paper](Line%20Codes%20for%20Communication%20Systems.pdf)

   * BOOK:

      * [Computer Network Tanenbaum](Computer%20Network%20Tanenbaum.pdf): This book has been used to teach the concepts of communication systems.

   * You can also refer to the following file to know the performance of each of the implemented methods:

      * [Line Coding](Line%20Coding.pdf)

## License

   This repository is licensed under the MIT License.

   See the [LICENSE](./LICENSE) file for more details.