Vol 11, No 2 (2013)
- Year: 2013
- Articles: 19
- URL: https://journals.eco-vector.com/2073-3909/issue/view/3247
Articles
4-8
9-13
BISTATIC SAR WHICH PARASITIZE THE TV SIGNALS
Abstract
The paper describes the system of obtaining radar images, using as a probe signal of TV broadcasting scheme of bi-static SAR. Describes the major functional and design characteristics of the equipment examined formation algorithm radar. Also the results obtained in the course of a natural experiment.
Infokommunikacionnye tehnologii. 2013;11(2):13-22
13-22
NUMERICAL SIMULATION OF THE GENERALIZED PROCEDURE OF FORMATION OF INDICES OF SOFT DECISIONS
Abstract
Offers a universal method for calculating indices of soft decisions necessary for the effective implementation of the procedure of soft decoding error-correcting codes. Introduce efficiency index scheme for forming indices soft decision and its asymptotic limits for different types of signals. Boundary estimates an analytical modeling synthesized systems forming indices of soft decisions are verified by results of statistical tests appropriate models.
Infokommunikacionnye tehnologii. 2013;11(2):22-28
22-28
THE ACCELERATED METHOD OF CALCULATION LOGARITHMIC FUNCTION VALUES FOR THE TASK SOLUTION OF GENERATION CODE SETS
Abstract
In work is offered the accelerated numerical method of calculation logarithmic function values for the task solution of generation quasi-orthogonal code sets on the basis of functional transformations of pseudorandom arguments. This allows to reduce minimal necessary number of arithmetic operations.
Infokommunikacionnye tehnologii. 2013;11(2):28-35
28-35
CONCEPT OF CLOUD TECHNOLOGIES IN THE TELEPHONY
Abstract
The article gives information about the concept of construction a voice networks via cloud technologies. In particular, the possible procedure of their integration in next generation networks is described. The idea of cloudy routing is considered.
Infokommunikacionnye tehnologii. 2013;11(2):35-39
35-39
RESEARCH AND OPTIMIZATION TCP/IP FOR DATA TRANSFER PERFORMANCE
Abstract
In this work is considered the practical research of influence settings tcp / ip on the data rate. Received during the research results show the influence of the packet fragmentation on the speed of data transmission. Developed method allowing fix the effect of the packet fragmentation and thereby increase the data rate.
Infokommunikacionnye tehnologii. 2013;11(2):39-42
39-42
RESEARCH OF THE BASIC CHARACTERISTICS OF MODERN NETWORK SWITCHS
Abstract
The basic structures and principles of work of the modern switchs used in computing systems with telecommunication access and networks, and principles of construction of their models are considered. By means of imitating models the analysis of the most important characteristics of these devices is made and effective modes of their work are defined.
Infokommunikacionnye tehnologii. 2013;11(2):42-45
42-45
ANALYSIS OF MODERN TRANSLATION TECHNOLOGIES, PROGRAMMING PARADIGMS AND THEIR APPLICABILITY TO THE TASK OF DEVELOPING A FORMAL LANGUAGE DESCRIPTION OF ROUTING PROTOCOLS
Abstract
The task of programming paradigms systematization was given. Analysis of the problem of formal description of routing protocols has been made. The applicability of declarative programming paradigm for solving the routing has been considered.
Infokommunikacionnye tehnologii. 2013;11(2):45-50
45-50
COMPLEX ANALYSIS AND SIMULATION MODELLING OF ATMOSPHERIC AIR POLLUTION IN THE CITY OF SAMARA
Abstract
System estimation of efficiency of nature-conservative measures by methods of mathematical simulation is offered in the article. Simulation modeling and complex analysis of efficiency of the financial attachments providing decreasing of the level of environmental pollution on the example of the largest industrial region of Russia - the city of Samara - is carried out.
Infokommunikacionnye tehnologii. 2013;11(2):50-54
50-54
54-59
BER PERFORMANCE OF OFDM-QAM OVER AWGN CHANNEL
Abstract
In this essay we describe error performance in OFDM system with QAM-8, -16, -64. We present general expression for BER performance calculated for subcarrier, QAM-symbol, OFDM-symbol. BER-curves are given and illustrated in graph. We analyze potential noise immunity of OFDM system.
Infokommunikacionnye tehnologii. 2013;11(2):59-62
59-62
SELECTION OF THE OPTIMAL NUMBER OF RECEIVING AND TRANSMITTING DEVICES WITH DIFFERENT METHODS OF TREAMENTS SYSTEMS V-BLAST
Abstract
The latter period is characterized by rapid development of wireless communication systems. In such systems, radio channels operating range of noise and distortion. Strong fading in the channel make it difficult to assess the sent messages and lead to distortions of the transmitted information. . The most promising way to solve this problem is to use multiple transceiving antennas MIMO-system. In this research, have been simulated the V-Blast system in the technical computing software Matlab.
Infokommunikacionnye tehnologii. 2013;11(2):62-65
62-65
65-68
69-78
78-87
87-90
TECHNIQUE OF FORMATION OF REQUIREMENTS TO SYSTEM OF PHYSICAL PROTECTION (SPP) ON THE BASIS OF CONCEPTUAL IMITATING MODEL
Abstract
In the article necessary level of requirements to SPP depending on a project cost (an object category) and threat type (intensity and value of damage) is justified. For the decision of this task the spatial-temporal simulation model of functioning SPP is constructed. As a result of carrying out the plan of experiment for models the analytical model of losses of a project cost from influence of threats and expenses on SPP is received. On extreme point of function of expenses requirements to parameters of SPP were defined.
Infokommunikacionnye tehnologii. 2013;11(2):91-98
91-98
99-104