摘要
针对当前方法在激光混沌耦合下优化映射序列扩频通信效率时,不能有效降低系统的误码率,导致系统误码率高和通信效率低的问题,提出激光混沌耦合下映射序列扩频通信效率分析方法。构建激光混沌耦合模型,采用适中的场外注入方法,降低扩频通信中存在的混沌现象。在该模型的基础上,得到常规并行组合扩频系统对应的误码率,为了降低系统误码率,利用循环映射算法提高数据接收过程中纠正出错序列和判断出错序列的能力,并运用优化后的系统对误判序列进行修正,获得优化后的系统误码率,从而提高激光混沌耦合下映射序列扩频的通信效率。实验结果表明,所设计方法下系统误码率低、通信效率高,充分体现了该方法的有效性与可靠性。
Aiming at the problem that the current method cannot effectively reduce the bit error rate of the system when optimizing the spread spectrum communication efficiency of map sequence under laser chaotic coupling,which leads to high bit error rate and low communication efficiency of the system,an analysis method of spread spectrum communication efficiency of map sequence under laser chaotic coupling is proposed.Laser chaotic coupling model is constructed and moderate out-of-field injection method is used to reduce chaotic phenomena in spread spectrum communication.On the basis of this model,the corresponding bit error rate of conventional parallel combined spread spectrum system is obtained.In order to reduce the bit error rate of the system,the cyclic mapping algorithm is used to improve the ability of correcting the error sequence and judging the error sequence in data receiving process.The optimized system is used to correct the misjudgement sequence and obtain the optimized system error rate,so as to improve the communication efficiency of spread spectrum of map sequence under laser chaotic coupling.The experimental results show that the proposed method has low bit error rate and high communication efficiency,which fully reflects the effectiveness and reliability of the method.
作者
李淼
LI Miao(College of Garment Engineering,Northwest Polytechnic University,Xi'an,712046,China)
出处
《激光杂志》
北大核心
2020年第9期107-110,共4页
Laser Journal
基金
青年科学基金项目(No.11804074)。
关键词
激光混沌耦合
映射序列
扩频通信
误码率
效率
laser chaotic coupling
map sequence
spread spectrum communication
bit error rate
efficiency
