PDM-DPSK-MPPM hybrid modulation for multi-hop free-space optical communication

详细信息    查看全文

• 作者：Zhuo Wang 王卓 ; Wen-xiao Shi 石文孝 ; Peng-xia Wu 吴芃霞
• 刊名：Optoelectronics Letters
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：12
• 期：6
• 页码：450-454
• 全文大小：656 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Applied Optics, Optoelectronics and Optical Devices
  Chinese Library of Science
  
• 出版者：Tianjin University of Technology, co-published with Springer-Verlag GmbH
• ISSN：1993-5013
• 卷排序：12

文摘

A hybrid polarization division multiplexed-differential phase shift keying-multipulse pulse position modulation (PDM-DPSK-MPPM) scheme for multi-hop free-space optical (FSO) communication is investigated. The analytical bit error rate (BER) of the proposed system in Gamma-Gamma turbulence channels is derived and verified using computer simulation. The results show that both multi-hop and hybrid modulation schemes are efficient techniques to improve the performance of FSO links. Compared with the traditional binary phase shift keying (BPSK) and MPPM, the hybrid scheme can improve the bandwidth-utilization efficiency and reliability of the system. Compared with the coherent demodulation of PDM-QPSK-MPPM, the system complexity is reduced at the cost of the degradation of BER performance, which can improve the practicality of hybrid modulation technology in FSO system.