Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference

Objectives. Analysis of the reception noise immunity of multiple phase shift keying (M-PSK) and quadrature amplitude modulation (M-QAM) signals has demonstrated a significant reduction in the quality of reception of discrete information due to the presence of various types of non-fluctuating interfe...

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Main Authors: G. V. Kulikov, T. T. Do, A. A. Lelyukh, V. D. Nguyen
Format: Article
Language:Russian
Published: MIREA - Russian Technological University 2023-02-01
Series:Российский технологический журнал
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Online Access:https://www.rtj-mirea.ru/jour/article/view/613
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author G. V. Kulikov
T. T. Do
A. A. Lelyukh
V. D. Nguyen
author_facet G. V. Kulikov
T. T. Do
A. A. Lelyukh
V. D. Nguyen
author_sort G. V. Kulikov
collection DOAJ
description Objectives. Analysis of the reception noise immunity of multiple phase shift keying (M-PSK) and quadrature amplitude modulation (M-QAM) signals has demonstrated a significant reduction in the quality of reception of discrete information due to the presence of various types of non-fluctuating interference in a radio communication channel including targeted harmonic interference. Therefore, the development of algorithms for compensating the influence of such forms of interference is an urgent task. While various methods for combatting this kind of interference, these vary in terms of their effectiveness. The aim of the present work is to synthesize and analyze the optimal algorithm for the reception of M-PSK and M-QAM signals with incoherent processing of harmonic interference.Methods. Various statistical radio engineering and computer simulation methods were used in accordance with optimal signal reception theory.Results. Synthesis and analysis of the optimal algorithm for receiving M-PSK and M-QAM signals with incoherent processing of harmonic interference were carried out. In addition to calculating the correlation integrals in the receiver, it is necessary to form weight coefficients, whose value depends on the correlation of the interference oscillation (extracted from the received mixture) with a sample of the interference stored in the receiver. The dependences of the bit error probability on the signal-to-noise ratio, interference detuning, and inaccuracy in setting the frequency and level of the interference sample in the receiver were obtained. It is shown that the higher the gain in the noise immunity of reception, the greater the intensity of the harmonic interference.Conclusions. The synthesized receiver circuit effectively compensates for harmonic interference. However, the efficiency of its operation depends on the detuning of the harmonic interference relative to the center frequency of the spectrum of the useful signal. The scheme for incoherent processing of harmonic interference remains operational even with small (within ±10%) inaccuracies in setting the frequency and the level of the interference copy in the receiver.
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spelling doaj-art-39689e6e0b7445ca8f56d9d5ecc7a9612025-02-03T11:45:50ZrusMIREA - Russian Technological UniversityРоссийский технологический журнал2500-316X2023-02-01111415010.32362/2500-316X-2023-11-1-41-50357Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interferenceG. V. Kulikov0T. T. Do1A. A. Lelyukh2V. D. Nguyen3MIREA – Russian Technological UniversityMIREA – Russian Technological UniversityMoscow Research Institute of Radio CommunicationsLe Quy Don Technical UniversityObjectives. Analysis of the reception noise immunity of multiple phase shift keying (M-PSK) and quadrature amplitude modulation (M-QAM) signals has demonstrated a significant reduction in the quality of reception of discrete information due to the presence of various types of non-fluctuating interference in a radio communication channel including targeted harmonic interference. Therefore, the development of algorithms for compensating the influence of such forms of interference is an urgent task. While various methods for combatting this kind of interference, these vary in terms of their effectiveness. The aim of the present work is to synthesize and analyze the optimal algorithm for the reception of M-PSK and M-QAM signals with incoherent processing of harmonic interference.Methods. Various statistical radio engineering and computer simulation methods were used in accordance with optimal signal reception theory.Results. Synthesis and analysis of the optimal algorithm for receiving M-PSK and M-QAM signals with incoherent processing of harmonic interference were carried out. In addition to calculating the correlation integrals in the receiver, it is necessary to form weight coefficients, whose value depends on the correlation of the interference oscillation (extracted from the received mixture) with a sample of the interference stored in the receiver. The dependences of the bit error probability on the signal-to-noise ratio, interference detuning, and inaccuracy in setting the frequency and level of the interference sample in the receiver were obtained. It is shown that the higher the gain in the noise immunity of reception, the greater the intensity of the harmonic interference.Conclusions. The synthesized receiver circuit effectively compensates for harmonic interference. However, the efficiency of its operation depends on the detuning of the harmonic interference relative to the center frequency of the spectrum of the useful signal. The scheme for incoherent processing of harmonic interference remains operational even with small (within ±10%) inaccuracies in setting the frequency and the level of the interference copy in the receiver.https://www.rtj-mirea.ru/jour/article/view/613multiple phase shift keyingquadrature amplitude modulationharmonic interferenceoptimal receptionnoise immunity
spellingShingle G. V. Kulikov
T. T. Do
A. A. Lelyukh
V. D. Nguyen
Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference
Российский технологический журнал
multiple phase shift keying
quadrature amplitude modulation
harmonic interference
optimal reception
noise immunity
title Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference
title_full Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference
title_fullStr Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference
title_full_unstemmed Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference
title_short Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference
title_sort optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non coherent processing of harmonic interference
topic multiple phase shift keying
quadrature amplitude modulation
harmonic interference
optimal reception
noise immunity
url https://www.rtj-mirea.ru/jour/article/view/613
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