The module comprises of thematic areas covering the most essential aspects of wireless systems. Beginning with the presentation of the fundamental parts of wireless systems, a detailed analysis of each component will follow, namely, antennas, propagation channels, and digital modulation. Students will obtain a system-level and holistic overview of wireless systems in the physical layer, what are the major components, how they are modelled, and how they interact and finally, how wireless systems perform as a whole and can be potentially improved or optimized.A more detailed description of provisional topics can be seen below.A. Fundamentals of wireless systems: Major components, Block diagrams.B. Antennas: Fundamental antenna parameters, Antenna performance and design metrics, Antennas as part or wireless systems, Transmitting and receiving antennas for point-to-point communications and Friis transmission formula.C. Propagation channels: Propagation mechanisms, Path loss modelling (including Friis transmission formula), Shadowing statistical modelling, Multipath propagation stochastic modelling.D. Digital modulation: Baseband and passband signals, Nyquist theorems for signal interference and reconstruction, Digital modulation techniques, Demodulation and detection performance.