Limits of Radio Data Transmission Noise Immunity Improvement in Digital Signal Processing with Noise Compensation
Keywords:
Communication, Digital Signal Processing, Immunity, Non-Noise Interference, Decorrelation and Compensation of InterferenceAbstract
Purpose: Studying the ways to increase the noise immunity of radio information transmission systems by decorrelation and compensation of non-noise interference in digital signal processing. Method: Analyzing the process of receiving and processing signals when picking information symbols under interference. Results: A formalized description of signal reception was performed, with decorrelation and compensation of non-noise interference. Expressions were obtained which describe the equivalent signal/noise and signal/interference ratios for the case of decorrelation of mixture of white Gaussian noise and non-noise interference with full or
partial redistribution of the intereference energy to the energy of white Gaussian noise, while keeping the total energy of active stirring impacts; and for the case of the compensation of non-noise interference during discrete orthogonal transformations with an attenuation coefficient exceeding the attenuation of the signal component. The probabilities of erroneous reception of an information symbol were calculated, depending on the original signal/noise ratio, with different signal/inteference ratios, with different correlation coefficients for the interference and signal, and with different loss factors, determining the boundaries of increasing the noise immunity for receiving information with decorrelation and compensation of non-noise interference. Practical relevance: The efficiency of using digital signal processing with decorrelation and compensation of non-noise interference for better immunity of radio data transmission systems was grounded, and the boundaries were determined for the noise immunity.