| title |
Digital Communication and Information Theory
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| creator |
Rodriguez, Georges
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| Belfiore, Jean-Claude
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| date |
2009-01-16
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| language |
en
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| identifier |
ENST_Com201
|
| |
| description |
Digital communications form the first part of this module. Digital modulations are defined from a finite set of signals. Their spectral properties are calculated from a recall of continuous random time processes. The signal conception methods such as the Nyquist criterion and adapted filtering are then presented in a structured approach from the receiver. The fundamental characteristics of a digital transmission, spectral efficiency and error probability are analysed for the base band transmissions at two and M-levels. Finally they are generalised to MDP type modulations (phase displacement modulation) by the use of the complex envelope. In the second part, the basic concepts of the information theory more particularly applied to the transmission of information to a channel with noise are introduced, source of information, quantity mean of information, channel, mutual information, theorem of information processing. The fundamental limits which result from Shannon's theorem are explained and applied to digital communications. The third part deals with an introduction to error correction coding in the context of digital communications, calling on the knowledge acquired during the first two parts. It includes the definition of linear codes, decoding on the symmetrical binary channel and the calculation of performances in terms of error probability. This course, which provides training in the techniques of digital transmission, is a vade-mecum for those who will not continue beyond the first year in this field and will act as the basis for a more in-depth study of communication systems in units in the communications field in the optional cycle.
|
| Information is now in most cases transported in digital form by wire support, optical fibres for example, or by radio, cellular networks or local wireless networks. This course is an introduction to the principles of the digital transmission techniques and systems of information based on digital communications, the theory of information and error correction coding.
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| Level: Ingénieur 1ère année
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| Course: Ingénieur
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| Duration of the course: 30h00
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| publisher |
Institut Télécom
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| type |
Collection |