A robust demodulation method based on signal intensity in wireless laser communications

Rugui Yao, Shizhou Pan, Jun Ma, Xiaoya Zuo, Pengfei Jiang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Laser communication is widely used in modern communication systems because its advantages of high secrecy, large capacity and strong anti-interference ability. Pulse Position Modulation (PPM) is used as an excellent modulation method in laser communications. However, in practical applications, the received signal intensity changes with the communication alignment beam area, which is roughly a trapezoidal or triangular envelope. So there is a lower intensity at the both ends which can reduce the demodulation probability, and that may cause a high bit error rate (BER). In this paper, we propose a robust demodulation method based on signal intensity, and based on an efficient frame format, the adaptive demodulation threshold is derived. Numerical results validate the effectiveness of the proposed frame recombination demodulation method. Compared with the traditional demodulation, the proposed scheme could ensure the demodulation accuracy, and has better BER performance.

Original languageEnglish
Title of host publication2018 27th Wireless and Optical Communication Conference, WOCC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
ISBN (Electronic)9781538649596
DOIs
StatePublished - 4 Jun 2018
Event27th Wireless and Optical Communication Conference, WOCC 2018 - Hualien, Taiwan, Province of China
Duration: 30 Apr 20181 May 2018

Publication series

Name2018 27th Wireless and Optical Communication Conference, WOCC 2018

Conference

Conference27th Wireless and Optical Communication Conference, WOCC 2018
Country/TerritoryTaiwan, Province of China
CityHualien
Period30/04/181/05/18

Keywords

  • frame reconstruction
  • intensity judgment
  • laser communication
  • PPM
  • robust demodulation

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