Watch a classified FM radio training video from WW2

While fewer and fewer people are listening to FM radio today, it was hot stuff amid its widespread rollout during the late 1930s and early 40s. Short for frequency modulation, FM’s appeal compared to ...
Radio World

These Developments Are Reshaping FM Infrastructure

A fully IP-based workflow can streamline operations, improve signal consistency and reduce overall cost, writes Hartmut ...
IEEE

A Multi-band Low–supply–voltage 16–QAM Transmitter Based on a Digital Fractional–N PLL with TDC Calibration for Capsule Endoscopy

Abstract: This paper presents a highly digital transmitter capable of multi-band 16-QAM modulation for capsule endoscopy, which requires a high data rate with high energy efficiency and relatively ...
IEEE

A Survey of Deep Transfer Learning in Automatic Modulation Classification

Abstract: Automatic modulation classification (AMC) is pivotal in both cooperative and non-cooperative communication systems. Despite achieving significant success in this field, deep learning (DL) is ...
GitHub

Demonstration of a QPSK modulator / demodulator in the audio range (with the ability to run it through a real speaker / mic)

Block diagram of demodulator section: As you can see, I'm using a Costas Loop with a PI (Proportional-Integrator controller) to control the local oscillator The screenshot at the top shows an example ...