GONG Jia-min, WANG Zhi-long, TANG Qi, et al. Design of SDPPM Modulation and Demodulation System for Ultraviolet Optical Communication[J]. 2018,(1):66-69.
GONG Jia-min, WANG Zhi-long, TANG Qi, et al. Design of SDPPM Modulation and Demodulation System for Ultraviolet Optical Communication[J]. 2018,(1):66-69. DOI: 10.13756/j.gtxyj.2018.01.017.
In order to reduce the influence of multipath dispersion effect on system performance and improve the anti-jamming capability of transmission channel
Separated Dual Pulse Position Modulation(SDPPM)scheme is used to complete the design of UV communication system.The pulse positions are separated from each other in SDPPM modulation symbols
which can effectively solve the inter-symbol interference problem.After the analysis of the SDPPM modulation symbol structure
SDPPM modulation and demodulation system is designed based on Field Programmable Gata Array(FPGA).The frame synchronization of demodulation system is specifically described in detail.We use VHDL language in ISE 14.7 software to complete the code and Modelsim 10.1 afor the timing simulation
which further demonstrate the feasibility of the modulation scheme.
关键词
分离双脉冲位置调制紫外光通信帧同步调制解调
Keywords
SDPPMUV communicationframe synchronizationmodulation and demodulation