Signals and Systems

EEE 321 is where you stop thinking of signals as just voltages on an oscilloscope and start treating them as mathematical objects you can decompose, transform, and filter — the central move is learning to switch fluently between time and frequency domains via Fourier and z-transforms, and to reason about any LTI system through its impulse response or transfer function. You'll work through Oppenheim & Willsky problem sets alongside six MATLAB labs where the abstractions become concrete: convolving signals, designing FIR/IIR filters, sampling and reconstructing, and demodulating a basic AM signal. This is the analytical backbone for everything downstream in EE — communications, control, DSP, image processing — so the fluency you build here is what later courses quietly assume you already have.