Θεωρία της πληροφορίας ή θεωρία πληροφοριών : κανάλι - σύστημα
Καραμάνου, Δήμητρα Ε.
SubjectΕπικοινωνίες ; Πληροφορίες, Θεωρία των ; Επεξεργασία σημάτων ; Μαθηματικά μοντέλα ; Error-correcting codes (Information theory) ; Coding theory ; Signal processing -- Digital techniques -- Mathematics
In this project is presented the theorem of Shannon who proved that it is possible to remain that the rate of transmission of information can be stable (lower capacity of the channel) and that the probability of error remains can be very small. The capacity of the channel can be calculated based on the noise characteristics of the channel. A communication system in the context of information theory corresponds to the classical communication system transmitter and receiver channel. We developed mathematical models for discrete communication channels and define the concept of capacity a discrete communication channel. Also, the study will be taken into consideration of the noise as a factor of influencing the transmission of data and define the discrete channel of coding theorem. Analyzing the capacity of continuous channel and or without memory will be taking into consideration the noise, as a factor in data transmission. The continuous channels that acting white Gaussian noise but flat power spectral density, samples are not statistically independent, so we have channel with memory.