Investigation of Characteristics of Quadrative - Amplitude Modulation Affecting Interference-Resistant Reception

https://doi.org/10.47191/rajar/v8i3.06
Quadrature Amplitude Modulation, vector signal, carrier frequency generator, digital-to-analog converter, biphasic signal, Bit Error Rate (BER), Signal to Noise, SNR-Signal Noise Ratio.

Authors

  • A.A. Yarmukhamedov Head of the department: Candidate of Technical Sciences, Associate Professor of the Department of radio Engineering devices and systems of Tashkent State Technical University
  • A.B. Jabborov Senior lecturer of the Department of radio Engineering devices and systems of Tashkent State Technical University
Vol. 8 No. 3 (2022): VOLUME 08 ISSUE 03
Articles
March 16, 2022

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The article analyzes the main reasons for reducing reliability, channel violations during the transmission and reception of digital television signals. The main regularities of noise-resistant formation of quadrature-amplitude modulation are investigated. Mathematical models, vector diagrams of the QAM signal and the results of a theoretical study of the dependence of the bit error probability on Eb/N0, to ensure noise-immune reception of digital television signals.