A short survey on nonlinear models of QPSK Costas loop

Research outputpeer-review

Abstract

The Costas loop is a modification of the phase-locked loop circuit, which demodulates data and recovers carrier from the input signal. The Costas loop is essentially a nonlinear control system and its nonlinear analysis is a challenging task. Thus, simplified mathematical models and their numerical simulation are widely used for its analysis. At the same time for phase-locked loop circuits there are known various examples where the results of such simplified analysis are differ substantially from the real behavior of the circuit. In this survey the corresponding problems are demonstrated and discussed for the QPSK Costas loop.

Original languageEnglish
Pages (from-to)6525-6533
Number of pages9
JournalIFAC-PapersOnLine
Volume50
Issue number1
DOIs
Publication statusPublished - 1 Jul 2017

Scopus subject areas

  • Control and Systems Engineering

Cite this

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title = "A short survey on nonlinear models of QPSK Costas loop",
abstract = "The Costas loop is a modification of the phase-locked loop circuit, which demodulates data and recovers carrier from the input signal. The Costas loop is essentially a nonlinear control system and its nonlinear analysis is a challenging task. Thus, simplified mathematical models and their numerical simulation are widely used for its analysis. At the same time for phase-locked loop circuits there are known various examples where the results of such simplified analysis are differ substantially from the real behavior of the circuit. In this survey the corresponding problems are demonstrated and discussed for the QPSK Costas loop.",
keywords = "nonlinear analysis, phase-locked loop, PLL, QPSK Costas loop, simulation",
author = "Kuznetsov, {N. V.} and Kuznetsova, {O. A.} and Leonov, {G. A.} and Yuldashev, {M. V.} and Yuldashev, {R. V.}",
year = "2017",
month = "7",
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language = "English",
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A short survey on nonlinear models of QPSK Costas loop. / Kuznetsov, N. V.; Kuznetsova, O. A.; Leonov, G. A.; Yuldashev, M. V.; Yuldashev, R. V.

In: IFAC-PapersOnLine, Vol. 50, No. 1, 01.07.2017, p. 6525-6533.

Research outputpeer-review

TY - JOUR

T1 - A short survey on nonlinear models of QPSK Costas loop

AU - Kuznetsov, N. V.

AU - Kuznetsova, O. A.

AU - Leonov, G. A.

AU - Yuldashev, M. V.

AU - Yuldashev, R. V.

PY - 2017/7/1

Y1 - 2017/7/1

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AB - The Costas loop is a modification of the phase-locked loop circuit, which demodulates data and recovers carrier from the input signal. The Costas loop is essentially a nonlinear control system and its nonlinear analysis is a challenging task. Thus, simplified mathematical models and their numerical simulation are widely used for its analysis. At the same time for phase-locked loop circuits there are known various examples where the results of such simplified analysis are differ substantially from the real behavior of the circuit. In this survey the corresponding problems are demonstrated and discussed for the QPSK Costas loop.

KW - nonlinear analysis

KW - phase-locked loop

KW - PLL

KW - QPSK Costas loop

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