• Title/Summary/Keyword: balanced QPSK DS-SS

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Automatic Frequency Control For Balanced QPSK DS-SS communication With Pilot Signal (파이롯 신호가 있는 Balanced QPSK DS-SS 통신의 자동 주파수 제어)

  • Zhu Fan;Lim Myoung Seob
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.42 no.1
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    • pp.67-73
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    • 2005
  • In order to compensate for the degradation caused by the frequency shift under the Rayleigh fading with the balanced QPSK DS-SS communication, it is necessary to devise an efficient phase estimation method. In this paper, using the pilot signal, three conventional methods and a complex number method are presented and compared. The performance comparison results show that the combination complex number method is better than the other conventional methods, which have some limiting conditions.