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Research Article Volume 11 Issue 3
Research into methods for increasing the noise immunity reception in the transmission system of radiotechnical complexes
Bayram Ibrahimov
Received: October 01, 2025 | Published: November 21, 2025
Citation: Ibrahimov B. Research into methods for increasing the noise immunity reception in the transmission system of radiotechnical complexes. Int Rob Auto J. 2025;11(2):109-112. DOI: 10.15406/iratj.2025.11.00309
Abstract
The performance indicators for transmitting and receiving signals with non-uniform traffic in radio systems using efficient signal-code structures are analyzed. Communication performance in radio systems transmitting and receiving under various interference conditions is investigated. A new approach is proposed for constructing a mathematical model for assessing the noise immunity characteristics of a coherent modem in a messaging system operating under general fading conditions. Based on a mathematical model, analytical expressions were derived for estimating spectral efficiency and bit error rates for signal reception using efficient modulation methods such as M-ary Quadrature Amplitude Modulation. This article also examines the noise immunity of coherent, element-by-element reception of multi-position signals with quadrature amplitude modulation under conditions of slow, general, one-sided normal fading.
Keywords: noise immunity, coherent modem, demodulator, bit error rate, in the system of radio engineering complexes, signal-to-noise ratio
©2025 Ibrahimov. This is an open access article distributed under the terms of the, which permits unrestricted use, distribution, and build upon your work non-commercially.