course: Transmission of Digital Signals
- teaching methods:
- lecture with tutorials
- responsible person:
- Priv.-Doz. Dr.-Ing. Karlheinz Ochs
- Priv.-Doz. Dr.-Ing. Karlheinz Ochs (ETIT)
- offered in:
- summer term
dates in summer term
- start: Monday the 06.04.2020
- lecture Mondays: from 10:15 to 11.45 o'clock in ID 03/445
- tutorial Mondays: from 12:15 to 13.00 o'clock in ID 03/445
|Form of exam:||written|
|Registration for exam:||FlexNow|
|Room :||ID 04/413|
The students understand the fundamental and important techniques for the transmission of digital signals. Especially, they know the basic physical relationships, while systematic methods for the description, analysis, and synthesis will be taught.
In the context of the mobile communication standards Long Term Evolution (LTE) and Universal Mobile Telecommunications System (UMTS), it is all about the methods for transmitting digital signals. The channel contains resources like time, space, bandwidth, and dynamic, which can be separately exhausted by time, space, frequency and code multiplex techniques or in combination like it is done in case of frequency hopping. The basic core consists of digital modulation, which is divided into linear and nonlinear techniques, where the linear ones are considered in depth, especially amplitude and phase shift keying as well as quadrature amplitude modulation. At the receiver, coherent and incoherent demodulation techniques are studied in detail, like the product and the intermediate demodulator and the envelope detector. Furthermore, the carrier and symbol timing recovery is an important issue. This lecture covers also pulse shaping with respect to intersymbol interference and with respect to the used bandwidth. For this, the channel is additionally noisy, which can be treated by using matched filter techniques or a correlation receiver. Finally, the maximum-a-posteriori- and maximum-likelihood are explained in the context of symbol detection and the resulting symbol and bit error rates will be discussed with regard to Shannon’s channel capacity on the basis of the power bandwidth diagram.
System theory 1 and 2
Diese Veranstaltung wird für Bachelorstudierende erstmals im Sommersemester 2015 angeboten.