COM4LAB: RxTx 2 - Digital Modulations QPSK and QAM

The COM4LAB courses in transmission and reception technology explain the setup of classic and modern radio systems and the modulation of signals step by step. The properties of the signals are analysed in more detail in the time and frequency domains. For this purpose, there is a transmitter and a receiver system on the board in which all components can be analysed individually.

In the second course entitled “Digital Modulations QPSK and QAM” common digital modulations are analysed with the state-of-the-art measuring techniques.

Total duration: up to 16 hours.

Target audiences

The course can be used to support the training process for the following professions, among others:

• Electronics technician for devices and systems
• Electronics technician for information and systems technology
• Aircraft electronics technician
• System electronics technician

Learning objectives

The students should:

• investigate modulation and demodulation of digital signals with shift keying,
• learn representation in the IQ constellation diagram and in the spectrum,
• distinguish between effective and signal bandwidths,
• be familiar with the topic of “Quality of Service: data rates, bit error rates”.

Previous knowledge

Students need knowledge of the setup of electronic circuits in order to successfully complete the course. The use of formulae is a prerequisite.