Hands-On OFDM using your soundcard

This article is part of the fundamentals of my real-world tutorial on OFDM using a cheap soundcard as the radio. If this notebook is interesting to you, check out the full tutorial!

Welcome to this course on designing your own OFDM transmitter and receiver using the sound device of your PC. In this course you will learn the basics of OFDM modulation and demodulation and the additionally required parts such as synchronization, channel estimation and equalization.

For running the examples it is recommended to use a dedicated sound device, such that (though very improbable) misconfigurations would destroy your main sound device. As an external USB sound card is very cheap, this safety measure is clearly worth the effort. In addition, it allows you to still listen to music while working with the code :-) For a recommendation of sound device, speaker and microphone, please refer to the documentation on DSPIllustrations.com.

Below, you find the table of contents with links to the Jupyter notebooks for running all the experiments.

Table of Contents

  1. HTML Setting up the Development Environment
  2. HTML Setting Up The Audio Interface
  3. HTML Up-Down-Conversion
  4. HTML FilterDesign for Up-Down-Conversion
  5. HTML Basic OFDM modulation and demodulation
  6. HTML Schmidl-Cox for Time Synchronization
  7. HTML OFDM Channel Estimation (1)
  8. HTML CFO Estimation and Compensation
  9. HTML OFDM Channel Estimation (2)
  10. HTML Improving the Synchronization Performance
  11. HTML OFDM-Related and 5G Waveforms

Disclaimer

Last updated: August 21, 2018

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This article is part of the fundamentals of my real-world tutorial on OFDM using a cheap soundcard as the radio. If this notebook is interesting to you, check out the full tutorial!

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