![\"\"](\"http:\/\/journals.khnu.km.ua\/vestnik\/wp-content\/uploads\/2021\/01\/pdf.png\")
<\/a> \u0421\u0442\u043e\u0440\u0456\u043d\u043a\u0438: 12-16. \u041d\u043e\u043c\u0435\u0440: \u21165, 2020 (289)<\/strong>\n\u0410\u0432\u0442\u043e\u0440\u0438:<\/strong>
\n\u0406.\u0421. \u041f\u042f\u0422\u0406\u041d., \u0414.\u0410. \u041c\u0410\u041a\u0410\u0420\u0418\u0428\u041a\u0406\u041d, \u041e.\u0412. \u0412\u041e\u0404\u0412\u041e\u0414\u041a\u041e
\n\u0425\u043c\u0435\u043b\u044c\u043d\u0438\u0446\u044c\u043a\u0438\u0439 \u043d\u0430\u0446\u0456\u043e\u043d\u0430\u043b\u044c\u043d\u0438\u0439 \u0443\u043d\u0456\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442
\nI. PYATIN, D. MAKARYSHKIN, O. VOYEVODKO
\nKhmelnytskyi National University
\nDOI:<\/strong> https:\/\/www.doi.org\/10.31891\/2307-5732-2020-289-5-39-44<\/a>
\n\u0420\u0435\u0446\u0435\u043d\u0437\u0456\u044f\/Peer review :<\/strong> 16.11.2020 \u0440.
\n\u041d\u0430\u0434\u0440\u0443\u043a\u043e\u0432\u0430\u043d\u0430\/Printed :<\/strong> 27.11.2020 \u0440.<\/p>\n
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The article is devoted to the study of the influence of the listed phenomena on the dependence of the number of errors in the communication channel on the signal-to-noise ratio. A study of the quality of constellations and eye diagrams at the input of the receiver of the digital communication system with QPSK modulation in the presence of phase and frequency shift in the propagation medium, the presence of phase noise, imbalance of the quadrature components of the signal. The main reasons for the deterioration of the quality of the communication channel are the reduction of the signal-to-noise ratio, phase and amplitude distortions. When processing and evaluating a digital signal, an important factor of quality is the parameter of intersymbol interference. Due to the imperfection of the components of the analog part of the communication system, there is an imbalance of in-phase and quadrature components of the signal. Insufficient suppression of the mirror channel causes deterioration of the modulus of the error vector in the receiver, which leads to an increase in the frequency of error bits. It is also necessary to take into account the deterioration of the signal due to the presence of thermal noise and signal attenuation due to the distance from the transmitter to the receiver. References<\/strong><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[38],"tags":[],"_links":{"self":[{"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=\/wp\/v2\/posts\/4743"}],"collection":[{"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4743"}],"version-history":[{"count":3,"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=\/wp\/v2\/posts\/4743\/revisions"}],"predecessor-version":[{"id":4881,"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=\/wp\/v2\/posts\/4743\/revisions\/4881"}],"wp:attachment":[{"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/journals.khnu.km.ua\/vestnik\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\u041a\u043b\u044e\u0447\u043e\u0432\u0456 \u0441\u043b\u043e\u0432\u0430:<\/strong> \u0430\u0434\u0438\u0442\u0438\u0432\u043d\u0438\u0439 \u0431\u0456\u043b\u0438\u0439 \u0433\u0430\u0443\u0441\u043e\u0432\u0438\u0439 \u0448\u0443\u043c, \u043a\u0430\u043d\u0430\u043b \u0437\u0432\u2019\u044f\u0437\u043a\u0443 , \u0444\u0430\u0437\u043e\u0432\u0438\u0439 \u0448\u0443\u043c, \u0441\u043f\u043e\u0442\u0432\u043e\u0440\u0435\u043d\u043d\u044f.<\/p>\n
\nKeywords:<\/strong> additive white Gaussian noise, communication channel, phase noise, distortion.<\/p>\n\n