This module provides advanced knowledge and critical insight into the design and analysis of modern communication systems, encompassing both fibre optic and RF/microwave technologies. Students will investigate propagation principles, bandwidth considerations, and loss mechanisms across different media. Emphasis is placed on the design and evaluation of wireless communication links using antenna theory, signal-to-noise ratio estimation, and channel modelling for both line-of-sight and multipath environments. The module also explores the performance characteristics and design constraints of optoelectronic and photonic components used in high-speed optical communication systems. Learners will gain the ability to select and justify front-end components, including MESFET amplifiers and optical receivers, to meet specific performance metrics such as gain, noise and linearity. By the end of the module, students will be equipped to critically appraise and synthesise complete communication system architectures to meet complex design requirements involving data rate, range, attenuation and reliability.