摘要
传统CDMA系统通信编码方式受到通信波段与波在数据量的制约,已经无法直接通过传统扩频方式过渡至OCDMA系统,因此针对此问题提出OCDMA系统的水下航行器扩频通信编码方法研究。首先通过光子晶体载波算法,对信号载波波束进行转换计算,提升通信波束的数据容载量;接着引入OCDMA频域扩容算法,对增容后的通信波束进行频段提升绑定,实现数据与波频的统一;最后通过仿真实验的方式,对比提出方法前后的信号载波量与信号强度,证明提出算法具有扩频能力强、稳定性好的特点。
The traditional coding mode of CDMA system is restricted by the data quantity of communication band and wave,and it can not be directly transferred to OCDMA system by traditional spread spectrum mode.Therefore,the research of spread spectrum coding method for underwater vehicle of OCDMA system is proposed.Firstly,the photonic crystal carrier algorithm is used to convert the signal carrier beams and improve the data capacity of the communication beams.Then,the OCDMA frequency domain expansion algorithm is introduced to enhance the bandwidth of the enhanced communication beams and bind them to achieve the unification of data and wave frequency.Finally,a method is proposed by comparing the simulation experiments.It is proved that the proposed algorithm has the characteristics of strong spread spectrum capability and good stability.
作者
王懿嘉
WANG Yi-jia(Changchun University of Technology,Changchun 130000,China;Jilin Justice Officer Academy,Department of Judicial Technology,Changchun 130000,China)
出处
《舰船科学技术》
北大核心
2019年第20期130-132,共3页
Ship Science and Technology
基金
吉林省教育厅“十三五”科学技术研究资助项目(吉教科合字[2016397]).
关键词
OCDMA
扩频通信
水下航行器
编码
OCDMA
spread spectrum communication
underwater vehicle
coding
