scholarly journals SIMULATION OF DATA TRANSMISSION SYSTEM WITH ADAPTIVE SELECTION OF AN ERROR-CORRECTING CODE BASED ON COMMUNICATION CHANNEL STATE ASSESS-MENT

2020 ◽  
Vol 4 ◽  
pp. 17-24
Author(s):  
I.V. Kochetova ◽  
◽  
A.V. Levenets ◽  
Keyword(s):  
Data Transmission ◽  
Communication Channel ◽  
Error Correcting Code ◽  
Feedback Channel ◽  
Channel State ◽  
Adaptive Selection ◽  
Transmission Equipment ◽  
Simulated System ◽  
Data Transmission System ◽  
Selection Of

The article proposes a simulation model of an adaptive system for transmitting discrete messages, in which information about the state of the communication channel is used to set the parameters of an error-correcting code, which makes it possible to operate the bandwidth of the communication channel and optimize the performance of data transmission equipment. An assessment of the efficiency of cer-tain error-correcting coding methods in a simulated system with respect to the value Eb/No is carried out. The model makes it possible to estimate such parameters as the weight of transmitted messages, the number of repeated messages through the feedback channel for a given value of Eb/No.

Data transmission in Hybrid Distributed Environment

2016 ◽  
Vol 6 (6) ◽  
pp. 2989
Author(s):  
Anton Pavlovich Teykhrib
Keyword(s):  
Packet Loss ◽  
Data Transmission ◽  
Communication Channel ◽  
Packet Transmission ◽  
Distributed Environment ◽  
High Quality ◽  
Channel Characteristics ◽  
Network Layers ◽  
Distribution Scheme ◽  
Selection Of

<p>This article discusses a hybrid distributed environment including two levels of nodes: the first level which has high quality channels between the nodes, and the second one in which the nodes are directly involved in communication and the communication is performed through the first-level nodes. For the indicated distribution scheme, the questions of selection of the best path between the first-level nodes are solved based on such communication channel characteristics as delay in packet transmission, jitter in transmission, packet loss in transmission, and choosing a method for data transmission through the selected best path: protocols of transport and network layers have been compared, and the use of network layer has been preferred.</p>

scholarly journals Data transmission in Hybrid Distributed Environment

2016 ◽  
Vol 6 (6) ◽  
pp. 2989
Author(s):  
Anton Pavlovich Teykhrib
Keyword(s):  
Packet Loss ◽  
Data Transmission ◽  
Communication Channel ◽  
Packet Transmission ◽  
Distributed Environment ◽  
High Quality ◽  
Channel Characteristics ◽  
Network Layers ◽  
Distribution Scheme ◽  
Selection Of

<p>This article discusses a hybrid distributed environment including two levels of nodes: the first level which has high quality channels between the nodes, and the second one in which the nodes are directly involved in communication and the communication is performed through the first-level nodes. For the indicated distribution scheme, the questions of selection of the best path between the first-level nodes are solved based on such communication channel characteristics as delay in packet transmission, jitter in transmission, packet loss in transmission, and choosing a method for data transmission through the selected best path: protocols of transport and network layers have been compared, and the use of network layer has been preferred.</p>

scholarly journals A Data Secured Communication System Design Procedure with a Chaotic Carrier and Synergetic Observer

Electronics ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 497
Author(s):  
Alexey Mushenko ◽  
Julia Dzuba ◽  
Alexey Nekrasov ◽  
Colin Fidge
Keyword(s):  
System Design ◽  
Data Transmission ◽  
Communication Channel ◽  
Design Procedure ◽  
Transmission System ◽  
Observer Design ◽  
System Structure ◽  
Useful Signal ◽  
Data Transmission System ◽  
Chaotic Carrier

We have considered the problem of secure communication by means of chaotic carrier communication channels. Data protection is provided if the signal in the communication channel looks like a stochastic or noisy one, i.e., by the steganography property, and also by using advanced and secured approaches of mixing a useful signal into a chaotic carrier. The problem is to find effective and efficient techniques for useful signal reconstruction at the receiver side. We firstly use a synergetic nonlinear mathematical observer to recover the two useful signals transmitted simultaneously over a single communication channel. Compared to a known observer, the synergetic one operates with initial nonlinear models, i.e., it may be applied directly to chaotic systems. In that system structure, we consider the useful signals as unobservable variables and estimate them by the given model of a chaotic generator. A chaotic data transmission system with two channels is demonstrated; the presented mathematical procedure explains the steps of synergetic two-channel observer design. Computer simulation results prove the viability of our approach. The proposed data transmission scheme and the observer design procedure provide effective transmission and reconstruction of informational signals. Reconstruction error is up to approximately 25% but has a very short pulses shape and could be eliminated with further analog or digital filtering algorithms. As an example application, simulation of image transmission and recovery is demonstrated. The study’s results may be used as a basis for further research into secure data transmission system design.

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