Design of woven coded CPFSK via hierarchical code structure

2004 ◽  
Author(s):  
S. Kempf ◽  
S. Shavgulidze ◽  
M. Bossert
Keyword(s):  
Code Structure ◽  
Hierarchical Code

Woven Coded CPFSK With Hierarchical Code Structure

2007 ◽  
Vol 55 (9) ◽  
pp. 1661-1666
Author(s):  
Stefan Kempf ◽  
Sergo Shavgulidze ◽  
Martin Bossert
Keyword(s):  
Code Structure ◽  
Hierarchical Code

scholarly journals Analyzing the code structures of multidimensional signals for a continuous information transmission channel

2021 ◽  
Vol 5 (9 (113)) ◽  
pp. 70-81
Author(s):  
Liubov Berkman ◽  
Olexandr Turovsky ◽  
Liudmyla Kyrpach ◽  
Oksana Varfolomeeva ◽  
Volodymyr Dmytrenko ◽  
...  
Keyword(s):  
Information Transmission ◽  
Transmission Channel ◽  
Quality Of Information ◽  
Euclidean Metric ◽  
Telecommunication Systems ◽  
Multidimensional Signals ◽  
Code Structure ◽  
Multidimensional Signal ◽  
Hierarchical Code

One of the directions to improve the efficiency of modern telecommunication systems is the transition to the use of multidimensional signals for continuous channels of information transmission. As a result of studies carried out in recent years, it has been established that it is possible to ensure high quality of information transmission in continuous channels by combining demodulation and decoding operations into a single procedure that involves the construction of a code construct for a multidimensional signal. This paper considers issues related to estimating the possibility to improve the efficiency of continuous information transmission channel by changing the signal distance of the code structure. It has been established that the code structures of such types as a hierarchical code construct of signals, a hierarchical code construct of signals with Euclidean metric, a reversible code construct of signals, a reversible code construct of signals with Euclidean metric have the potential, when used, to increase the speed of information transmission along a continuous channel. With a signal distance reduced by 10 percent or larger, it could increase by two times or faster. The estimation of the effect of reducing a signal distance on the efficiency of certain types of code structures was carried out. It has been established that the hierarchical reversible code construct, compared to the hierarchical code construct, provides a win of up to two or more times in the speed of information transmission with a halved signal distance. Implementing the modulation procedure has no fundamental difficulties, on the condition that for each code of the code construct the encoding procedure is known when using binary codes. The results reported here make it possible to build an acceptably complex demodulation procedure according to the specified types of code structures

Models of genetic code structure evolution with variable number of coded labels

Biosystems ◽  
2021 ◽  
Vol 210 ◽  
pp. 104528 ◽  
Author(s):  
Konrad Pawlak ◽  
Małgorzata Wnetrzak ◽  
Dorota Mackiewicz ◽  
Paweł Mackiewicz ◽  
Paweł Błażej
Keyword(s):  
Genetic Code ◽  
Variable Number ◽  
Structure Evolution ◽  
Code Structure

scholarly journals Comparative analysis of Kotlin and Java languages used to create applications for the Android system

2019 ◽  
Vol 13 ◽  
pp. 354-358
Author(s):  
Daniel Sulowski ◽  
Grzegorz Kozieł
Keyword(s):  
Comparative Analysis ◽  
Programming Languages ◽  
Mobile Applications ◽  
Community Support ◽  
Code Structure ◽  
Android System ◽  
Execution Times

This publication presents the results of a comparative analysis of Java and Kotlin programming languages used to create mobile applications for system Android. The analysis covers performance aspects such as CPU load, RAM load, as well as the compilation and execution times. Aspects such as code structure, availability of libraries, supported databases, popularity and community support were taken under consolidation.

scholarly journals Computational design of orthogonal membrane receptor-effector switches for rewiring signaling pathways

2018 ◽  
Vol 115 (27) ◽  
pp. 7051-7056 ◽  
Author(s):  
M. Young ◽  
T. Dahoun ◽  
B. Sokrat ◽  
C. Arber ◽  
K. M. Chen ◽  
...  
Keyword(s):  
Signaling Pathways ◽  
G Protein ◽  
Dopamine D2 Receptor ◽  
D2 Receptor ◽  
High Specificity ◽  
Computational Design ◽  
Membrane Receptor ◽  
Membrane Receptors ◽  
Cellular Functions ◽  
Hierarchical Code

Membrane receptors regulate numerous intracellular functions. However, the molecular underpinnings remain poorly understood because most receptors initiate multiple signaling pathways through distinct interaction interfaces that are structurally uncharacterized. We present an integrated computational and experimental approach to model and rationally engineer membrane receptor-intracellular protein systems signaling with novel pathway selectivity. We targeted the dopamine D2 receptor (D2), a G-protein–coupled receptor (GPCR), which primarily signals through Gi, but triggers also the Gq and beta-arrestin pathways. Using this approach, we designed orthogonal D2–Gi complexes, which coupled with high specificity and triggered exclusively the Gi-dependent signaling pathway. We also engineered an orthogonal chimeric D2–Gs/i complex that rewired D2 signaling from a Gi-mediated inhibitory into a Gs-dependent activating pathway. Reinterpreting the evolutionary history of GPCRs in light of the designed proteins, we uncovered an unforeseen hierarchical code of GPCR–G-protein coupling selectivity determinants. The results demonstrate that membrane receptor–cytosolic protein systems can be rationally engineered to regulate mammalian cellular functions. The method should prove useful for creating orthogonal molecular switches that redirect signals at the cell surface for cell-engineering applications.

Algorithm for implementation of the «third decision scheme» of increasing the efficiency of search and synchronization of difficult broadband noise like signals

2021 ◽  
Author(s):  
I.I. Snytkin ◽  
T.I. Snytkin
Keyword(s):  
Central Element ◽  
Broadband Noise ◽  
Telecommunication Networks ◽  
Complex Signals ◽  
The Third ◽  
Recurrent Sequences ◽  
Decision Scheme ◽  
Code Structure ◽  
Wideband Signals ◽  
Derivatives Of

The construction of telecommunication networks with a guaranteed level of quality of service involves assessing and ensuring the security of both the networks themselves and information flows from unauthorized access and various kinds of interference, in particular at the 1st (physical) level of the network. In this regard, research in the field of creating recurrent code sequences with improved systemic, correlation, secretive, imitation-resistant properties is constantly relevant. In particular, research in the development and application of derivative nonlinear recurrent sequences, as a central element in the developed theory of the «third decision scheme». Goal of the work is to develop an algorithm for increasing the efficiency of search and synchronization of broadband signals in the form of double derivatives of nonlinear recurrent sequences, which directly uses the features of their code structure, the properties of determinism of their auto- and cross-correlation functions. The results of the research and development of the efficiency of the algorithm for accelerated search and synchronization of broadband complex signals in the form of phase-shift keyed derivatives of nonlinear recurrent sequences, which implements the principles of the «third decision schema» The developed algorithm, based on the use of double derivatives of nonlinear recurrent sequences as wideband signals, can be applied in the construction of promising packet radio networks.

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