GENERAL INFORMATION: Instructors: Chryssomalis Michael
Semester: 9th
CREDITS: ECTS Units: 5
Teaching Units: 4
Theory Hours: 2
Exercises Hours: 1
Lab Hours: 2
COURSE PAGE:

Course Description
The wireless communication channel: introduction, concept of a wireless channel, types of wireless communication systems, historical review, cellular systems and other wireless systems. The cellular concept and system design fundamentals: frequency reuse, channel assignment and handoff, interference and system capacity, trunking and grade of service, capacity improvement techniques. Propagation mechanisms and basic propagation models: reflection, refraction and transmission, rough surface scattering, diffraction, free space loss, plane earth loss, link budgets. Macrocells: parameters definition, empirical path loss models, physical models, comparison of models. Shadowing or large scale fading: physical basis and statistical characterization, location variability, correlated shadowing. Small scale fading: the AWGN channel, the narrowband channel and wideband channel, fading, time spreading of the signal, power-delay profiles and their parameters, frequency selective and nonselective or flat fading, spaced-frequency correlation function, coherence bandwidth, time variance of the channel due to motion, spaced-time correlation function, Doppler spread, coherence time, fast and slow fading, the Bello functions. The GSM900/1800/1900 systems: main goals and advantages, description of the system, propagation characteristics of the rf transmission, voice coding, structure and types of channels, frequency hopping and GMSK modulation, types of bursts. Antennas for Mobile Communications: Adaptive and smart antennas. The electromagnetic influence of base station and mobile phone antennas on human beings.