Digital Communication Transfer
The lecture "Digital Communication Transfer" deals in detail with the various aspects of digital point-to-point connections.
Sara Reichert
Essentially, the aim is to encode the information from a source (video, image, audio, etc.) as a data stream with the lowest possible data rate. The need for data reduction arises because the bandwidth and therefore the maximum possible data flow are limited for most transmission channels. For economic reasons, the aim is to use as little bandwidth as possible.
The first session deals with the binary baseband. Here, a source (signal) is interpreted in binary form, i.e. converted into ones and zeros. This is done using mathematical principles and procedures and statistical values that describe how data can be abstracted, interpreted and compared.
he second session is about source coding. Here, a source is downsized or reduced so that it can be transmitted better and faster from the transmitter to the receiver. With data reduction, it is possible to eliminate and reduce the information to be transmitted by removing redundant and irrelevant parts of the information source (redundancy) without damaging the source.
The third session deals with channel coding. Here, redundancies are added using mathematical principles (coding theory) to protect the source from transmission errors when transmitting via disturbed channels.
Finally, the fourth session deals with modulation. This deals which which protocols (Wifi, Bluetooth, Lorawan, AMFM,...) are used to send instructions to the source. This raises the question of how to deal with the physical space so that the information arrives correctly.
Der “analog digital biskit” ist Teil der Hardware der Laborversuche.