The subject describes the transmission tecniques in which modern digital communications systems are based; QAM modulation and transmission, Spread Spectrum with application to GPS, multicarrier with application to mobile communications, Wi-Fi and Bluetooth, error detection and correction with application to QR codes and satellite communications, and convolutional coding.
Required knowledge is Signals and Systems, Linear Algebra and Calculus:
- Modulation, analogue modulation in particular
- Transmission impairments
- Superheteordyne receiver
- Vector spaces
- Derivatives and integrals
- Random variables
Becoming familiar with the advanced mathematical concepts of modern Telecommunications Systems, such as GPS, Spread Spectrum, mobile communications systems or coding and error control techniques. Becoming familiar with computer simulation of real operation of such systems.
Chapter 1. QAM modulation
Chapter 2. Spread Spectrum modulation
Chapter 3. Multiple Access
Chapter 4. Multicarrier modulation
Chapter 5. Source coding
Chapter 6. Channel coding: linear block codes
Chapter 7. Channel coding: convolutional codes
Chapter 8. Channel coding: Interleaving and concatenated codes
Chapter 9. MC-CDMA modulation
The subject has a weekly operation with 2 teaching sessions:
- In the first session (2h) the contents of the main topics are developed through master classes and problems.
- In the second session (2h) classes of doubts and problems are combined with practical classes where students work in groups to solve small exercises where they put into practice the concepts studied.
PRACTICAL SESSIONS
The practical sessions are teaching sessions that are part of the subject and that have a weekly frequency throughout the development of the subject. The goal is to support and encourage progressive, necessary and essential learning in order to successfully overcome the practical application of the contents of the subject as well as the practice to be designed and implemented. Students work with their own PCs in the classroom, using the Matlab simulation environment. During these sessions students must solve short practical exercises that must be delivered in the same session or for the next week of practical class. On the other hand, some long practical exercises are also proposed, which will have to be worked on over several sessions until the final delivery date. The practical exercises proposed throughout the course deal with the topics studied throughout the course, and allow students to experience the complexity of a real and applied problem.
The course duration is one semester and consists of two different parts: the knowledge part and the practical part of the subject. The assessment of knowledge and practice will be independent. In order to pass the subject it will be necessary to pass the knowledge and practice independently.
Objective 1: Basic knowledge of the subject: it is evaluated through the class examens and the semester exam.
Objective 2: Abilities to put knowledge in the practice: it is evaluated using the team work tasks.
Objective 3: Writing abilities in the own language: it is evaluated using the team work tasks.
Objective 4: Team work abilitites: it is evaluated using the group work tasks.
J. G. Proakis, Digital Communications. Mcgraw-Hill, 1989. ISBN 0-07-100269-3. B.
Sklar, Digital Communications: Fundamentals And Applications. Prentice-Hall, 2000. ISBN 0-13-084788-7.
Socoró, J.C., Morán, J.A., Alsina, R., Sistemes de Transmissió, La Salle Online, 2008.
L. Hanzo et al., Quadrature Amplitude Modulation, John Wiley & Sons, 2004
S.Kaiser et al., Multi-Carrier and Spread Spectrum Systems, Wiley, 2003