Visualising Digital Communications: QAM with Real Signals
Explore digital quadrature amplitude modulation (QAM) using real signals transmitted over a wireless channel from a software defined radio (SDR) in this 11-minute video. Gain insights into the practical application of QAM in digital communications, observing how signals are transmitted and received in real-world scenarios. Delve into the visualization of constellation diagrams and eye patterns to understand signal quality and performance. Learn about the relationship between data rate, bandwidth, and signal-to-noise ratio (SNR) in the context of QAM. Discover how bit error rate (BER) and symbol error rate (SER) are affected by channel conditions. Enhance your understanding of digital communication concepts such as matched filtering, power spectral density (PSD), and probability density functions (PDFs) as they relate to QAM systems. Connect theoretical knowledge to practical implementations using SDR technology, providing a comprehensive view of modern digital communication techniques.