METHODS TO REDUCE THE NUMBER OF OPERATIONS OF DIGITAL SIGNAL PROCESSING PROGRAM-CONFIGURED OFDM-SYSTEMS 5 GENERATION FOR REDUCING PEAK FACTOR AND PULSE INDUSTRIAL NOISE EXPOSURE
Journal Title: Телекомунікаційні та інформаційні технології - Year 2018, Vol 123, Issue 2
Abstract
In the article in connection with the adoption of the international standard 5G, which for several years has been developed jointly by the largest telecommunication and IT corporations in the world, the technical requirements for 5G networks compared with the characteristics of existing LTE networks. It is shown that in order to meet the key requirements for 5G networks, new technological solutions for the radio access network, the basic network, the transport network, subscriber devices, as well as the development of various related technologies are needed. It is determined that OFDM technology, for effective use in 5G networks, requires fundamental changes. However, these changes can be achieved by further increasing the computational complexity. The article presents a method for reducing the computational complexity of the digital processing of signals of software-configurable OFDM systems of the 5th generation, which also effectively allows to deal with the disadvantages of power amplifiers (decrease of the peak factor) and the pulse industrial noise exposure. In the calculation of the efficiency of the IOST and OST, the performance characteristics are in the range of 11 to 24%. The influence of the OFDM-system with orthonormal sparse transformation on the signal-to-noise ratio using a channel with frequency-selective fading was conducted. Simulation simulations were performed using VisSim's universal system of block simulation visual mathematical modeling. The effectiveness of the OFDM system with OST compared to the usual OFDM with QPSK modulation, even at low signal-to-noise ratio, is about 17 dB, measured at 10-4 BER.
Authors and Affiliations
A. Makarenko
Keywords
Related Articles
- EP ID EP468535
- DOI -
- Views 107
- Downloads 0
ESTIMATION OF THE EFFICIENCY OF THE INTELLECTUAL SYSTEM FUNCTIONING
The article is devoted to the substantiation of the approach to the evaluation of the effectiveness of the functioning of the intellectual system (IntS), which is a component of the information system. The purpose of the...
Diagnostics of complex technical systems in conditions of irregular destructive influences.
Last several years we can see the intensive development of complex systems. Such development generates a lot of publications, giving a theoretical basis for building expert systems. These expert systems find the connecti...
SUBSYSTEMS AND MODULES OF DECISION SUPPORT SYSTEM. FUNCTION ALGORITHMS
The article is devoted to the construction of a structural scheme for the functioning of the decision support system to provide support for decision-making in the field of information security. The main functional module...
Analysis of efficiency of signal filtering algorithm built on the basis of L-group operations.
Signal filtering (signal extraction) problem is formulated within signal space with L-group properties. We consider algorithm of narrowband (in radioengineering sense) signal filtering that is based on the method of lin...
World indexes of introduction and use of mobile technologies.
The article describes the implementation and use of global indicators of mobile technology. The article considers the development of the mobile communications generations since the transition from the development of the...