St. Petersburg State University of Telecommunications

About: St. Petersburg State University of Telecommunications is a education organization based out in Saint Petersburg, Russia. It is known for research contribution in the topics: Computer science & The Internet. The organization has 408 authors who have published 465 publications receiving 2160 citations.

Development of Interference-Resistant Communication System based on LimeSDR and Raspberry Pi Microcomputer

Abstract: The paper presents the development of interference-resistant communication with single-frequency modulation and the use of convolutional encoder for data transmission. The implementation was performed using the GNU Radio Companion software package. LimeSDR and Raspberry Pi microcomputer kits were chosen as the hardware platform. The developed system is compared with a similar communication system using single-frequency modulation without convolutional.

Intra-CPU Traffic Estimation and Implications on Networks-on-Chip Research

Abstract: General purpose networks-on-chip (GP-NoC) are expected to feature tens or even hundreds of computational elements with complex communications infrastructure binding them into a connected network to achieve memory synchronization. The experience accumulated over the years in network design suggests that the knowledge of the traffic nature is mandatory for successful design of a networking technology. In this paper, based on the Intel CPU family, we describe traffic estimation techniques for modern multi-core GP-CPUs, discuss the traffic modeling procedure and highlight the implications of the traffic structure for GP-NoC research. The most important observation is that the traffic at internal interfaces appears to be random for external observer and has clearly identifiable batch structure.

The algebra of two dimensional generalized Chebyshev - Koornwinder oscillator

Abstract: In the previous works \cite{N46,N47} authors have defined the oscillator-like system that associated with the two variable Chebyshev-Koornwinder polynomials. We call this system the generalized Chebyshev - Koornwinder oscillator. In this paper we study the properties of infinite-dimensional Lie algebra that is analogous to the Heisenberg algebra for the Chebyshev - Koornwinder oscillator. We construct the exact irreducible representation of this algebra in a Hilbert space $\mathcal{H}$ of functions that are defined on a region which bounded by the Steiner hypocycloid. The functions are square-integrable with respect to the orthogonality measure for the Chebyshev - Koornwinder polynomials and these polynomials form an orthonormalized basis in the space $\mathcal{H}$. The generalized oscillator which is studied in the work can be considered as the simplest nontrivial example of multiboson quantum system that is composed of three interacting oscillators.

The Study and Mapping of Spatial Distribution for Technogenic Electromagnetic Fields with Power Frequency at Moscow Certain Areas

Abstract: A study on the spatial distribution of values of industrial frequency (50 Hz) magnetic induction has showed that the largest values were common for dense historical development of Moscow central part, and the minimum ones –for recreational zones and public squares. Increased values have been identified in the areas of mid-rise development of 1950-1960 and reflect incomplete compliance of wiring in houses of this type with loads due to modern household appliances. Many-storeyed houses, both built in 1950s and the modern ones, are more trouble-free in this regard. No exceedances of the operative hygienic standards for magnetic induction have been noted. However, values exceeding the approximate safety level of 400 nT in Moscow are found mainly in places exposed to underground feed cables. The value of magnetic induction can be considered as an indicator of the total man-made load on the territory (geo-indicator), and a convenient object of measurement and display on maps by means of isolines, that is reflected on schematic maps.

Architectures of the Fast Deployable Flying Network for Emergencie

Abstract: Climate change and natural disasters affected most of the countries all over the globe. The consequence such as tropical storms, floods and droughts directly affect social and various industrial sectors including Informatiom Communication Technology. The article is intended to describe the architectures of the fast deployable flying network for emergencies to be used in a natural disaster