共查询到20条相似文献,搜索用时 15 毫秒
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介绍了呼叫处理软件开发所需要的基本技术,提出了基于Vxworks实时操作系统的软件体系结构和实时呼叫软件系统开发模型,研究了有限状态机技术、软件架构技术。引出呼叫处理分层软件架构模型,并论述了呼叫控制模块的主要功能。对呼叫控制实体进行抽象,介绍了呼叫控制实体的参数设计,给出了呼叫控制实例,对呼叫处理软件的测试及结果进行了分析。 相似文献
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This paper describes the software and the software structure used in a family of high-capacity digital telephone switches. The call processing task is complex, and has great diversity. It must support existing and future features, including some not yet envisioned. The software must also provide man-machine interfaces, maintain the office database, and offer automatic recovery from hardware and software errors. It must also meet critical real-time performance specifications. The techniques adopted to meet these requirements include the use of a strongly typed high-level language, independent design and compilation of software modules, and the provision of an automated program library system and problem reporting system. Considerable experience in the development and support of large software systems has been accumulated, and is described in the paper. 相似文献
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Network service providers continue to require new and different call processing features for their switching systems. Open call processing addresses the limitations of the current feature procurement process by being vendor-independent; i.e. the same call processing model is used for all switching systems and it is required that features be independently installable on a running system. A structure for call processing software that supports open call processing is described. Different approaches to managing call processing features are discussed. The implementation of a simulation model of a feature manager that ties 17 interacting features together into a single feature package is presented 相似文献
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提出通过C#和Matlab混合编程实现雷达回波数据采集和反演软件设计的方法。利用C#友好的界面实现用户接口,将Matlab编写的函数文件编译成共享库在C#中进行调用。以现有的大气激光雷达所采集数据为例,进行了回波数据采集、预处理及消光系数反演。运行结果表明,将C#界面开发的优势与Matlab强大的算法处理和仿真功能相结合,可增大运算速度并提高编程效率,软件可有效地应用于激光雷达系统的数据采集和监测,快速批量地实现回波数据预处理以及反演参数的实时动态显示。系统通过调整算法参数也可用于其它激光雷达信号的处理。 相似文献
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FPGA在机载雷达信号处理系统中的应用 总被引:2,自引:0,他引:2
介绍了一种基于大规模FPGA及高性能DSP芯片的机载雷达信号处理嵌入式系统的设计方案及设计实现。采用标准的VME总线及基于FPGA内嵌MGT的高速串行互连技术,具有实时性强、集成度高以及软硬件可编程易于系统扩展及重构的特点。 相似文献
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以实现汽车智能化防撞为研究目的,使用高性能DSP芯片和CAN总线技术,设计了以TMS320F2812为处理核心的智能化信息采集和处理电路,开发了多类传感器实时采集处理软件,并给出了详细的设计过程和实例。本系统采用通用的CAN总线技术实现各节点间的数据通信,实现了模块化设计,可以根据需求灵活更换不同种类的探测器,高性能的DSP可以实现各种数据的实时综合处理,可有效判断车辆与物体的安全距离,使驾驶员能够及时做出反应,获得充足的处理时间。 相似文献
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基于JPEG2000编解码芯片的高清晰数字图像监控系统 总被引:1,自引:1,他引:0
基于JPEG2000图像编解码芯片(型号:THUJ2K01),设计了包括图像采集、压缩、传输、存储显示及系统控制的高清晰数字图像监控系统,并就涉及的关键技术和实现方法进行了讨论.控制软件部分采用多线程程序设计技术,结果表明多线程有效地改善了系统资源的利用,图像处理速度达到单线程时的两倍. 相似文献
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基于有限状态机的呼叫中心软件设计 总被引:5,自引:0,他引:5
稳定、高效、可扩展的控制软件是基于CTI技术构建呼叫中心系统的关键。文章介绍了一种面向应急救援的呼叫中心系统,其核心软件基于有限状态机理论设计而成,具有控制结构清晰、程序代码简洁高效等特点。在简要介绍呼叫中心系统结构的基础上,给出了控制线路状态转换的有限状态机定义,并对呼叫中心服务器软件的组成结构和工作原理、操作站及日志监控站的设计与实现进行了深入的分析和介绍。 相似文献
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一种基于DSP的并行信号处理系统的设计 总被引:2,自引:2,他引:0
讨论了一种并行信号处理系统,该系统采用高性能的并行DSP芯片作为处理单元,构成了分布式的并行结构,具有很强的可扩充性和灵活性。算法软件和数据传输软件的标准模块用汇编语言完成,以达到高效地实时处理;主程序用高级语言设计,可以方便地调用各标准软件模块,整个程序具备易修改、易维护的特点。 相似文献
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In current telecommunication networks, the value-added services available to subscribers are almost exclusively offered by the carrier providing local telephony service. This results from two factors: the processing for services is either based in or triggered from software executing on the access telecommunication switches, and signaling links over which subscribers request services are terminated on these access switches. In a direct signaling system, the signaling link from a subscriber does not necessarily terminate on an access switch, but rather on an intelligent server we call a call server. The call server invokes service functions and coordinates their interactions. This direct signaling system may be overlaid on various types of access networks, including circuit-switched telephony, packet telephony, wireless local loop, cable, etc. We discuss the design, implementation, and performance of a direct signaling system, including procedures that provide varying amounts of integration with current telecommunication systems. Our results show that a direct signaling system using a low-delay direct signaling link and in which no changes are made to existing telecommunicatione switches incurs approximately 100 ms higher postdial delay than a standard ISDN system. A direct signaling system in which telecommunication switches provide open interfaces and coordinate processing with direct signaling servers incurs approximately 100 ms lower postdial delay than a standard ISDN system 相似文献
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MATLAB是一款高性能的科学与工程计算软件,具有强大的数值计算和分析能力,但其对硬件的访问能力较弱。在MATLAB环境中实现对硬件资源的直接访问可以极大的方便对数据的处理及算法的验证,基于这种目的提出一种扩展MATLAB访问硬件的方法,通过MATLAB外部函数接口调用第三方器件商提供的动态链接库导出函数,在MATLAB平台下实现对一般硬件的访问,并具体介绍了该方法在气压高度计原型系统设计中的应用。该方法简化了MATLAB与硬件的数据交互,对于原型系统设计和算法的验证提供了一种有效的手段。 相似文献
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ATM switching platforms are well suited for transporting multimedia streams with quality-of-service (QOS) requirements. This paper describes the system design of a high performance connection management system for xbind, a flexible open programmable signaling system for ATM switching platforms. The latency and throughput of call processing is improved by caching, message aggregation, and processing of requests in parallel. Using a set of general purpose UNIX work stations, we are able to attain a maximum throughput of close to 600000 call operations/h (setup and delete) with an average call setup time of 85 ms. With a low traffic load of 3600 call operations/h, an average call setup latency of 11 ms can be obtained. The system is adaptive. By adjusting various control parameters, the connection manager(s) can be dynamically configured to trade off between throughput and call setup time 相似文献
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介绍了一种利用FPGA和DSP实现直接序列扩频软件无线电系统,具体讨论了利用FP-GA实现了数字下变频(DDC)和完成PN码的快速捕获和跟踪等数字化处理技术,并进行了仿真实验,实验结果表明了系统设计的可行性。 相似文献