Course name: Digital communications
Course code: 502887
Degree course: Ingegneria Elettronica
Disciplinary field of science: ING-INF/03
The course relates to:
University credits: CFU 6
Course website: n.d.
Specific course objectives
Introduce modern transmission techniques, allow students understand their performance and provide ability to understand their advantages and drawbacks.
The course is intended for students who already have a basic knowledge of transmission techniques anda good knowledge of signal characterization. The cours introduces in detail modulation and coding techniques used in modern communications systems.
Review of signal characterization methods
- Signal characterization in time domain
- Statistical signal characterization
- Signal characterization using othonormal basis
- Signal characterization in frequency
- Definition of information and how to represent it
- Entropy and information
- Shannon theorems
Performace under AWGN noise
- Linear modulations
- Optimum receiver
- Error probability
Performance under bandwidth limitations
- InterSymbol Intereference. Nyquist criterion
- Raised cosine signal shaping.
- Partial response pulses
- Basics of linear equalization
- MLSE receiver.
- Ungerboeck metrics, iterative demodulation, Viterbi algorithm
- Error probability of an MLSE receiver
Transmission and reception in fading channels
- Fading characterization
- Performance of linear and non-linear modulations
Error control coding
- Error correctin and error detecting codes
- Review of block and cyclic codes.
- Convolutional codes. State diagram description, Viterbi and sequential decoding.
- Concatenated codes and interleaving
- Iterative decoding. Graph description of codes.
- Turbo codes
Course entry requirements
Course structure and teaching
Lectures (hours/year in lecture theatre): 42
Practical class (hours/year in lecture theatre): 6
Practicals / Workshops (hours/year in lecture theatre): 0
Suggested reading materials
Testing and exams