IDEAS home Printed from https://ideas.repec.org/a/ids/ijitma/v19y2020i2-3p151-161.html
   My bibliography  Save this article

A blind demodulation algorithm of random codes on carrier under low signal noise ratio by Morlet wavelet

Author

Listed:
  • Wei Huang
  • Xiangmo Zhao
  • Chao Wang

Abstract

This paper proposes a novel blind demodulation algorithm of random codes on carrier under low signal noise ratio (SNR) by using continuous wavelet transform. We chose Morlet wavelet with similarity and symmetry. The proposed algorithm can demodulate random codes on carrier under low SNR without any prior knowledge. Simulation results show that the bit error rate (BER) curve of the existing blind demodulation algorithms of direct sequence spread spectrum is above the theoretical BER curve of the coherent demodulation. Simulation result of new algorithm shows that BER curve of the blind demodulation of the wavelet transform is below the theoretical BER curve of coherent demodulation. The novel blind demodulation algorithm allows to obtain an 8 dB gain in SNR terms compared with that obtained by the theoretical coherent modulation when SNR is 10–4.

Suggested Citation

  • Wei Huang & Xiangmo Zhao & Chao Wang, 2020. "A blind demodulation algorithm of random codes on carrier under low signal noise ratio by Morlet wavelet," International Journal of Information Technology and Management, Inderscience Enterprises Ltd, vol. 19(2/3), pages 151-161.
    • Handle: RePEc:ids:ijitma:v:19:y:2020:i:2/3:p:151-161
    as

    Download full text from publisher

    File URL: http://www.inderscience.com/link.php?id=106216
    Download Restriction: Access to full text is restricted to subscribers.
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ids:ijitma:v:19:y:2020:i:2/3:p:151-161. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sarah Parker (email available below). General contact details of provider: http://www.inderscience.com/browse/index.php?journalID=18 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.