海底光缆系统经济性建模及快速规划算法
Economic Modeling and Fast Planning Algorithm of Undersea Optical Cable System
高雯静 1高冠军1
作者信息
- 1. 北京邮电大学信息光子学与光通信全国重点实验室,北京 100876
- 折叠
摘要
[目的]海底光缆在国际通信链路中占据主导地位,在进行海底光缆通信系统的规划时往往是根据经验确定几组可能的方案,然后比选出传输性能和投资成本相对较优的方案.然而,随着通信设备和通信技术的发展,可选的调制格式和光纤数量不断增加,备选方案数量较多,无法快速确定最优方案.因此,有必要建立一个海底光缆通信系统的成本最优化模型,求解成本最优的系统规划方案.[方法]针对海底光缆通信系统中的系统规划配置问题,以跨段距离、光纤类型、光纤纤对数量、中继器输出功率、调制格式和实用信道数为研究变量,建立一个以传输性能、传输容量和供电电压为约束条件的成本最优化模型,利用级联遗传-字典序法对成本最优化模型进行求解计算.[结果]结果表明,文章所提优化算法与全遍历算法的规划结果差异不超过 0.34%,但该优化算法运算次数远少于全遍历算法的运算次数,仅为全遍历算法的 1/100.其次,级联遗传-字典序法的运算次数受变量范围的影响小于全遍历算法.最后,通过对比不同跨段距离下海底光缆通信系统的最优成本,发现其规划结果不具有规律性.[结论]各个设计变量之间相互影响,系统的最优成本设计无法根据经验得到,需要建立模型求解;文章采用的算法不仅运算结果精确,而且运算次数较少.
Abstract
[Objective]Undersea optical cable plays a leading role in international communication.In the planning of undersea opti-cal cable communication system,several groups of possible schemes are often determined according to experience.The scheme with relatively better transmission performance and investment cost is then selected.However,with the development of communi-cation equipment and communication technology,the number of optional modulation formats and optical fibers keeps are increas-ing.The number of alternative schemes is too large to quickly determine the optimal scheme.Therefore,it is necessary to estab-lish a cost optimization model of undersea optical cable communication system to solve the cost optimal scheme.[Methods]Aiming at the problem of system planning and configuration in the undersea optical cable communication system,a cost optimization model considering the parameters of transmission performance,transmission capacity and supply voltage is established by taking the span length,optical fiber type,number of optical fiber pairs,repeater output power,modulation format and number of practical chan-nels as the variables.The cascaded-lexicographic method is used to solve the cost optimization model.[Results]The results show that the difference between the planning results of the proposed optimization algorithm and full traversal algorithm are no more than 0.34%.However,the number of operations of the optimization algorithm proposed in this paper is far less than that of the full tra-versal algorithm,with only 1/100 of that of the full traversal algorithm.Secondly,the number of operations of the cascade gene-lexicography method is less affected by the range of variables than that of the total traversal method.Finally,by comparing the op-timal cost of the undersea cable communication system under different span length,it is found that the planning results have no reg-ularity.[Conclusion]The variables always influence each other.The optimal cost design of the system cannot be obtained accord-ing to experience,so it needs to establish a model.The algorithm used in this paper is not only accurate,but also uses fewer oper-ation times.
关键词
海底光缆通信系统/经济性建模/遗传算法/字典序法Key words
undersea optical cable communication system/economic modeling/genetic algorithm/lexicographic method引用本文复制引用
基金项目
国家重点研发计划(2022YFB2903300)
信息光子学与光通信全国重点实验室自主重点课题(IP-OC2020ZZ02)
北京市自然科学基金(4232050)
出版年
2024
国家科技期刊平台
NSTL
万方数据