Introduction to satellite-link subsystems and examination of the geometrical theory of geosynchronous and geostatic satellites with emphasis on satellites of the second type. Specialized topics on the satellite channel (e.g. satellite antennas) and analysis of the satellite link in terms of radiated and received power, signal-to-noise relations, and random effects. Short review of analog modulation techniques, followed by a detailed study of digital modulation techniques and their implementation in satellite communication systems. Special emphasis on the matched filter and calculation of the probability of error in digital communication systems. Detailed examination of the satellite transponder. Emphasis on transponder signal processing and the effects of nonlinearities in satellite amplifiers. Development of satellite networks with emphasis on multiple-access techniques: frequency division (FDMA), time division (TDMA), and code division (CDMA). Lecturers:Christos Capsalis , Panagiotis Cottis Course Website:http://mycourses.ntua.gr/courses/ECE1232