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Approaches to Evaluating the Quality of Masking Noise Interference

Smailov Nurzhigit, Batyrgaliev Askhat, Akhmediyarova Ainur, Seilova Nurgul, Koshkinbayeva Madina, Baigulbayeva Moldir, Romaniuk Ryszard, Orunbekov Maxat, Assem Kabdoldina, Kotyra Andrzej

International Journal of Electronics and Telecommunications

2021

Vol. 67, No. 1

59--64

The paper discusses the characteristics of spatial electromagnetic noise generators, as well as the formation of a broadband noise signal. A number of well-known methods for assessing the quality of masking noise interference and the approaches used in them have been described. Approaches to the measurement of masking noise were also determined in assessing their quality. In conclusion, additional methods are proposed for assessing the quality of masking noises, such as searching for correlation of noise in different frequency sub-bands and using statistical and (or) graphical methods (tests) for randomness.

A random signal generation method for microcontrollers with DACs

Czaja Z., Kowalewski M.

Metrology and Measurement Systems

2018

Vol. 25, nr 4

675--687

A new method of noise generation based on software implementation of a 7-bit LFSR based on a common polynomial PRBS7 using microcontrollers equipped with internal ADCs and DACs and a microcontroller noise generator structure are proposed in the paper. Two software applications implementing the method: written in ANSI C and based on the LUT technique and written in AVR Assembler are also proposed. In the method the ADC results are used to reseed the LFSR after its each full work cycle, what improves randomness of generated data, which results in a greater similarity of the generated random signal to white noise, what was confirmed by the results of experimental research. The noise generator uses only the internal devices of the microcontroller, hence the proposed solution does not introduce hardware redundancy to the system.