Optical networks act as a backbone for coming generation high speed applications.These applications demand a very high bandwidth which can be exploited with the use of wavelength division multiplexing(WDM)technology.T...Optical networks act as a backbone for coming generation high speed applications.These applications demand a very high bandwidth which can be exploited with the use of wavelength division multiplexing(WDM)technology.The issue of setting light paths for the traffic demands is routing and wavelength assignment(RWA)problem.Based on the type of traffic patterns,it can be categorized as offline or online RWA.In this paper,an effective solution to offline(static)routing and wavelength assignment is presented considering multiple objectives simultaneously.Initially,the flower pollination(FP)technique is utilized.Then the problem is extended with the parallel hybrid technique with flower pollination and intelligent water drop algorithm(FPIWDA).Further,FPIWD is hybrid in parallel with simulated annealing(SA)algorithm to propose a parallel hybrid algorithm FPIWDSA.The results obtained through extensive simulation show the superiority of FPIWD as compared to FP.Moreover,the results in terms of blocking probability with respect to wavelengths and load of FPIWDSA are more propitious than FP and FPIWD.展开更多
文摘在某智能制造控制系统中,为获得各系统的实时运行状态,需要将状态数据和过程数据进行保存和分析处理。针对处理数据量大、突发数据多、数据存储和提取处理速度慢等问题,提出智能制造系统上位机软件设计。基于Embedded Visual C++为Windows CE 7.0操作系统编写相关驱动和应用程序,综合采用多线程、线程同步和异步线程的方式,设计数据处理系统软件,实现多种通信网络的数据实时接收、实时保存、实时处理和实时显示功能。经过测试,该方法有效地解决数据丢包和任务繁忙时出现的应用程序阻塞问题,较完美地实现了实时处理和分析功能。
文摘Optical networks act as a backbone for coming generation high speed applications.These applications demand a very high bandwidth which can be exploited with the use of wavelength division multiplexing(WDM)technology.The issue of setting light paths for the traffic demands is routing and wavelength assignment(RWA)problem.Based on the type of traffic patterns,it can be categorized as offline or online RWA.In this paper,an effective solution to offline(static)routing and wavelength assignment is presented considering multiple objectives simultaneously.Initially,the flower pollination(FP)technique is utilized.Then the problem is extended with the parallel hybrid technique with flower pollination and intelligent water drop algorithm(FPIWDA).Further,FPIWD is hybrid in parallel with simulated annealing(SA)algorithm to propose a parallel hybrid algorithm FPIWDSA.The results obtained through extensive simulation show the superiority of FPIWD as compared to FP.Moreover,the results in terms of blocking probability with respect to wavelengths and load of FPIWDSA are more propitious than FP and FPIWD.
