Wireless Communications

Course title: Wireless Communications

Code: FEIT10L019

Number of credits (ECTS): 6

Weekly number of classes: 3+1+1+0

Prerequisite for enrollment of the subject: Digital Communications 1

Course goals/Competences: The student will acquire fundamental knowledge of fading channels, modulation and coding in flat fading channels, OFDM, spread spectrum signals and CDMA, smart antennas and MIMO systems and will be able to understand the principles of functioning of any current or future wireless communication system.

Total available number of classes:180

Curriculum: Large-scale fading and small-scale fading classification. Free space propagaton loss. Empyrical models for propagation loss. Shadowing. Impulse response of time varying channels. Statistical characterization of time varying channels. Rayleigh and Ricean fading. Detection in the presence of slow, flat fading. Outage probability. Diversity types and combining techniques. Error control coding for fading channels: interleaving and error probability. Adaptive transmission for fading channels: techniques with variable transmit power, adaptive modulation and adaptive coding. Multicarrier modulation. OFDM. The role of the cyclic prefix in OFDM. Challenges facing the multicarrier systems. Spread spectrum principles. Direct sequence spread spectrum. Sequences for spectrum spreading. Frequency hopping spread spectrum. Multiuser spread spectrum systems: analysis of downlink and uplink. Antenna arrays and smart antennas. Radiation pattern of antenna arrays. Types of antenna arrays. MIMO systems - channel model and capacity. Space-time coding.  Spatial multiplexing.

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