The study course deals with transmission systems (TS), their evolution and application in modern telecommunications networks. Topics include signal digitalisation and transmission, regeneration of a digital signal and its conversion back to the analogue form. Formation and multiplexing of digital streams, as well as network synchronisation are examined. The study course covers the theory of TS, as well as practical measurements in the laboratory. International standards related to TS interfaces are considered. Students are prepared for professional career and further studies at the Master’s level.
Course contents:
- Evolution of transmission systems. (TS) Analogue and digital TS. Amplification and regeneration of signals.
- Analysis of signals to be transmitted. Formulation of specifications for TS. Examples.
- Separation methods of transmission directions used in TS.
- Hybrid circuit, its principles, implementation and application, similar circuits.
- Sampling and quantising of analogue signals for transmission in digital TS (source encoding).
- Uniform and non-uniform quantisation. Principles and implementation.
- Quantisation noise, its analysis for different encoding types.
- Vocoders, speech transmission over LTE and 5G, EVS.
- Design of E1 primary group (30 channels). T1 systems. Relevant ITU Recommendations.
- Versions of E1 architecture.
- Statistical analysis of signals, random processes.
- Digital transmission over noisy environment. Probability of transmisson error.
- Receivers for digital signāls, design principles. Functional units and components.
- Multiplexing of primary (E1) channel groups.
- Plesiochronous digital hierarchy (PDH).
- Synchronous digital hierarchy (SDH, OTN).
- Synchronisation of transmission networks.
- Primary reference clocks (PRC).
- Further development of transmission systems. Reliability.
- Course project (Simulation of TS using MATLAB environment).
