【摘要】：在自由空間光通信(FSO)系統(tǒng)中,由于先進的調(diào)制格式能大大提高頻譜效率,并可以改善系統(tǒng)的傳輸容量而備受采用。在研究QPSK(正交相移鍵控)調(diào)制的基礎(chǔ)上,對新型調(diào)制格式PS-QPSK(偏振切換正交相移鍵控)的調(diào)制和解調(diào)方案進行研究,并在新型光學仿真軟件Optisystem平臺下完成基于PS-QPSK調(diào)制格式的系統(tǒng)仿真,實現(xiàn)FSO系統(tǒng)中PS-QPSK調(diào)制系統(tǒng)的分析。通過仿真結(jié)果可以看出,該系統(tǒng)可以很好地實現(xiàn)PS-QPSK的調(diào)制和解調(diào),具有很好的傳輸性能;當進行長距離傳輸時,系統(tǒng)的誤碼性能降低較小。因此,采用PS-QPSK調(diào)制格式的空間光通信系統(tǒng)具有可行性,適合長距離傳輸。
[Abstract]:In free-space optical communication (FSO) systems, advanced modulation formats can greatly improve the spectral efficiency and improve the transmission capacity of the system. Based on the study of QPSK (orthogonal Phase shift keying) modulation, the modulation and demodulation schemes of a new modulation format PS-QPSK (polarization switched orthogonal Phase shift keying) are studied. The system simulation based on PS-QPSK modulation format is completed on the platform of new optical simulation software Optisystem, and the analysis of PS-QPSK modulation system in FSO system is realized. The simulation results show that the system can realize the modulation and demodulation of PS-QPSK well and has good transmission performance. Therefore, the space optical communication system with PS-QPSK modulation format is feasible and suitable for long distance transmission.
【作者單位】： 吉林化工學院信息與控制工程學院;
【基金】：吉林省教育廳項目(2016134)
【分類號】：TN929.1
，

本文編號：2305122