Wireless Communications
Code
7303
Academic unit
Faculdade de Ciências e Tecnologia
Department
Departamento de Engenharia Electrotécnica
Credits
6.0
Teacher in charge
Paulo da Costa Luís da Fonseca Pinto, Paulo Miguel de Araújo Borges Montezuma de Carvalho
Weekly hours
4
Teaching language
Português
Objectives
The main goal it is to give to the students the necessary skills to understand and to establish connection between the following aspects:
Cellular planning
Concepts of frequency planning associated to cellular networks. Frequency planning to achieve optimal system capacity. Frequency re-use strategies and capacity maximization techniques with resource to the sectorization, micro and pico cells. The RF interference problem in cellular systems.
Propagation aspects
Limitation propagation aspects related with coverage planning, as ground reflection and obstacle diffraction. Knowledge of the different propagation models normally adopted in the project of mobile communications systems. Capacity to carry through the relation with different inherent project propagation environments. Channel type identification and adoption of the adjusted mathematical model suitable to the characterization of the existing channel type. Diversity techniques used for fading compensation, due to propagation multi-path.
Transmission in mobile communications
Understanding the modulation techniques used for radio communications and the limitations. Understand the advantages and characteristics that justify the choice of one modulation in a mobile communication system. Spectral limitations and power amplification problems, associated to the digital modulations normally adopted. Identify the necessity of detection and correction codes and the applicability context of each one.
Systems
System analysis including GSM, UMTS and Wireless Lans, topology and constitution. Access and encryption techniques. Protocol analisys. Codification structures. Services.
Subject matter
1. Introduction
1.1. Evolution of the mobile communications
1.2. Typical architecture
1.3. Private mobile radio systems
2. Basic concepts in the cellular planning
3. Propagation aspects
4. Transmission in mobile communications
5. Systems/applications
5.1 System GSM (Global System will be Mobile Communications)
5.2. UMTS (Universal Mobile Telecommunications System)
5.3. LTE
Introduction to LTE
Physical Layer
Benefits and Capabilities