Communication Technologies

11B2055

Bachelor

German

5.0

only winter term

1 semester

The task of communication technology is to transmit information as accurately and efficiently as possible via technical systems. In today's information society, almost all business processes, private activities and industrial processes are dependent on networked systems and communication options. This makes it all the more important to continue developing modern communication technologies that make efficient use of limited resources and at the same time meet the ever-increasing demands of the various fields of application.  The "Communication Technologies" module introduces students to the basic methods of signal transmission in wired and wireless technologies. The focus is on digital transmission concepts, which are important for understanding current transmission technologies. Analog methods are also considered if they contribute to a deeper understanding of digital concepts. The extension of signal theory to include the consideration of stochastic signals enables the assessment of the various methods with regard to the achievable transmission rate, bandwidth requirements, error probability and other signal properties.

1. basic concepts of communication (e.g. transmission system, comparison of analog and digital transmission systems)
2. repetition of system theory with regard to communication systems (e.g. time domain, frequency domain, impulse response, transfer function, energy and power signals)
3. low-pass and band-pass systems (e.g. ideal low-pass and ideal band-pass, equivalent low-pass systems)
4. discrete-time signals (e.g. sampling and quantization, sampling theorem, discrete convolution, discrete Fourier transform)
5. stochastic signals (e.g. description in the time and frequency domain, correlation, power density spectrum);
6. digital transmission in the baseband (e.g. correlation reception, bit error rates, binary and multilevel transmission);
7. modulation methods and demodulation (e.g. AM/FM, focus: digital methods ASK, PSK, QAM, FSK);
8. digital transmission with bandpass signals (e.g. bit error rates, bandwidth requirements)

The total workload for the module is 150 hours (see also "ECTS credit points and grading").

• oral exam or
• Written examination

• Field work / Experimental work

Students understand the fundamental principles of communication, in particular the concepts and basic components of digital communication systems, and expand their knowledge of signal and system theory to include the treatment of stochastic and discrete-time signals in the time and frequency domain. They can systematically apply the corresponding methods to describe and analyze processes in analog and digital communication systems.

Students can apply the advanced methods of signal and system theory specifically to analyze deterministic and stochastic signals and their transmission via systems in the low-pass and band-pass range. They have detailed knowledge of digital transmission in the baseband and can explain important modulation methods in detail. They can explain the components of a digital transmission system and the basic concepts of digital signal transmission in detail and estimate important parameters, such as their bandwidth requirements and achievable data rates. You will be able to describe the influence of interference signals (AWGN) and calculate the resulting bit error rates.

Students understand the influence of key concepts of digital signal transmission, e.g. the influence of sampling and quantization on the achievable quality of transmission. They can analyze the transmission of stochastic signals via digital transmission systems with the help of signal and system theory and evaluate and compare essential concepts of digital systems for message transmission with regard to the achievable transmission quality and frequency requirements.

Students are able to apply the methods of signal and system theory specifically to analyze the transmission of deterministic and stochastic signals via digital systems for message transmission in the baseband and in the bandpass range. They can analyze such systems and are able to evaluate and select the various methods with regard to transmission rate, bandwidth requirements, error probability and other signal properties. You will be able to measure signals and transmission characteristics in the time and frequency domain and, in particular, carry out and evaluate spectral measurements using the discrete Fourier transform. 

Students will be able to precisely describe communication systems using the specific technical vocabulary and systematically explain and mathematically describe complex relationships in digital message transmission. 

• Roer, Peter

• Roer, Peter
• T?njes, Ralf