In this video, Professor Emil Björnson explains what a linear timeinvariant (LTI) system is, and how such systems interact with signals. In particular, examples of linear and nonlinear are provided, as well as examples of timeinvariance and timevarying systems. These concepts underpin the study of communication systems, where the communication channel is a system.

The slides are available here: https://github.com/emilbjornson/prese...

The video was produced for the course IK2560 Mobile Networks and Services at the KTH Royal Institute of Technology.

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