1.- Basic concepts.
1.1. Elements of a communications system.
1.2. Basic concepts about signals: classification, energy and power.
1.3. Spectral energy density. Rayleigh's theorem.
1.4. Power spectral density. Parseval's theorem.
2.- Analog communications: Continuous wave modulations.
2.1. Amplitude modulations: AM, DBL, SSB and QAM.
2.2. Angular modulations: FM and PM.
3.- Noise in analog communications.
3.1. Noise in communication systems.
3.2. Signal to noise ratio in analog modulations.
4.- Pulse modulation.
4.1. Analog pulse modulation.
4.2. Quantification.
4.3. Pulse Code Modulation (PCM).
