UDC 537.872.31
DETECTION OF DATA TRANSMITTED VIA UNIVERSAL SERIAL BUS ENSURING ENERGY CONCENTRATION OF RADIATED RADIO BINDING IN NARROW SPECTRUM STRIPS
V. S. Bezkorovainyi, Ph.D. (Tech.), LVDNU, Lugansk; This email address is being protected from spambots. You need JavaScript enabled to view it.
V. V. Yakovenko, Dr. Sc. (Tech.), full professor, Head of the Department, LVDNU, Lugansk; This email address is being protected from spambots. You need JavaScript enabled to view it.
S. N. Shvets, Ph.D. (Tech.), associate professor LVDNU, Lugansk; This email address is being protected from spambots. You need JavaScript enabled to view it.
The task is to detect data transmitted via USB 2.0, providing the concentration of energy emitted by radio interference in narrow bands of the spectrum in the framework of solving the problem of electromagnetic compatibility. The aim of the work is to increase the speed of data transmission via USB 2.0 interface under the conditions of applying preliminary scrambling of data in the framework of solving the EMC problem by classifying the transmitted data into the class containing data that provide the concentration of energy of emitted radio interference in narrow bands of the spectrum and the class containing no data. To solve this problem, the choice of maximum amplitude of signal spectral component generated by representing a file bit sequence in two levels is justified, while the level of -1 corresponds to zero, 1 corresponds to one, and the sequence of bits is converted in accordance with the algorithm of NRZI encoder. As a result of using prescrambling only for the class of data that ensures the concentration of energy of emitted radio interference in narrow bands of the spectrum, the efficiency of data transmission via the USB 2.0 interface has been increased by 4.7 times.
Key words: USB 2.0 interface, electromagnetic compatibility, classification, radiation, scrambler, distribution function, radio interference, spectrum.