Qasim Chaudhari
Qasim Chaudhari is an independent consultant and trainer with expertise in wireless communications, Software Defined Radio (SDR) and Digital Signal Processing (DSP). He obtained a PhD in Electrical Engineering from Texas A&M University and worked at various organizations including Qualcomm, Renzym and Center for Energy Efficient Telecommunications. He has developed and implemented DSP algorithms for real world demonstrations of many wireless systems such as a MIMO-OFDM testbed, low-SNR receivers and phase of arrival based localization.
As the founder of https://wirelesspi.com, his focus is on explaining concepts through beautiful figures, simple mathematics and intuitive reasoning. He is an author of two books, Wireless Communications from the Ground Up - An SDR Perspective (along with a video course with practical exercises to implement the concepts) and 5G Physical Layer - An Easy Guide to Key Technologies. You can reach him at info@wirelesspi.com.
Timing Synchronization in Software Defined Radios (SDR) (2020)
Status: Available NowA Software Defined Radio (SDR) merges the two fields of digital communication and digital signal processing into an efficient implementation of transmitters and receivers. One outcome of this combination is an interesting perspective on how timing synchronization is performed in digital communication receivers. This session will explain the timing synchronization problem in both time and frequency domains and then discuss in detail a timing locked loop consisting of timing error detectors, loop filter, interpolation and interpolation control. Insights into the relation of timing synchronization with general receiver design will also be presented.