Communications Engineering – Experiment 2
Channel Coding and Digital Modulation
The objective of each message transmission over a disturbed channel is an error free transfer of information. While the task of source coding is the elimination of redundancy in the signal, channel coding adds redundancy to the signal. This is used for the detection and the correction of possible channel distortions in the channel decoder and is called Forward Error Correction (FEC). The source coding should be optimally adapted to the signal with all output bits having the same information content, whereas the channel coding considers the special properties of the transmission channel and adjusts the type and the complexity of the additional redundancy accordingly.
The experiment deals with the different methods and problems of channel coding and digital modulation, e.g., as in the Global System for Mobile Communication (GSM).
Additional Information
In preparation of this lab, the participant has to work through a script and some preliminary problems have to be solved.