TY - GEN
T1 - A robust demodulation method based on signal intensity in wireless laser communications
AU - Yao, Rugui
AU - Pan, Shizhou
AU - Ma, Jun
AU - Zuo, Xiaoya
AU - Jiang, Pengfei
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/6/4
Y1 - 2018/6/4
N2 - 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.
AB - 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.
KW - frame reconstruction
KW - intensity judgment
KW - laser communication
KW - PPM
KW - robust demodulation
UR - http://www.scopus.com/inward/record.url?scp=85049398423&partnerID=8YFLogxK
U2 - 10.1109/WOCC.2018.8372732
DO - 10.1109/WOCC.2018.8372732
M3 - 会议稿件
AN - SCOPUS:85049398423
T3 - 2018 27th Wireless and Optical Communication Conference, WOCC 2018
SP - 1
EP - 5
BT - 2018 27th Wireless and Optical Communication Conference, WOCC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 27th Wireless and Optical Communication Conference, WOCC 2018
Y2 - 30 April 2018 through 1 May 2018
ER -