Description: 串口通讯工具，可自动延时一定时间发送数据，发送的数据从0x00到0xFF，可设置最小长度和最大长度，适合专业串口调试和性能检测使用。-Serial communication tools, can automatically send data to a certain period of time delay, send the data from 0x00 to 0xFF, to set the minimum length and maximum length, suitable for professional serial debugging and performance testing to use. Platform: |
Size: 360448 |
Author:中国 |
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Description: 声光技术在雷达动目标模拟中的应用， 由于受到延迟时间固定不变或只能离散变化的限制,许多雷达目标模拟器不能模拟连续运动目标的变化。为此,设计了一种新型的声光延迟系统,并对该系统的性能作了分析。与其它延迟系统相比,本系统的优点在于延迟时间可连续变化,延迟总时间可满足信号处理的要求。因此,它可以方便地应用于运动雷达目标模拟和其它信号的处理。
-Sound and light technology in radar moving target simulation, due to the limit of the delay time constant or only discrete changes, many radar target simulator can not simulate changes in the continuous moving target. To this end, the design of a novel acousto-optical delay system, and the performance of the system analyzed. Compared with the other delay system, the advantage of this system is that the delay time can be continuously changes to delay the total time can satisfy the requirements of the signal processing. Therefore, it can be easily applied to the sports radar target simulation, and other signal processing. Platform: |
Size: 45056 |
Author:李亮 |
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Description: DDR SDRAM控制器的VHDL源代码，含详细设计文档。
The DDR, DCM, and SelectI/O™ features in the Virtex™ -II architecture make it the perfect
choice for implementing a controller of a Double Data Rate (DDR) SDRAM. The Digital Clock
Manager (DCM) provides the required Delay Locked Loop (DLL), Digital Phase Shift (DPS),
and Digital Frequency Synthesis (DFS) functions. This application note describes a controller
design for a 16-bit DDR SDRAM. The application note and reference design are enhanced
versions of XAPP200 targeted to the Virtex-II series of FPGAs. At a clock rate of 133 MHz,
16-bit data changes at both clock edges. The reference design is fully synthesizable and
achieves 133 MHz performance with automatic place and route tools.-DDR SDRAM controller VHDL source code, including detailed design documents. The DDR, DCM, and SelectI/O Platform: |
Size: 132096 |
Author:xbl |
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Description: ：Ad HOC网络是随着无线通信技术的快速发展而出现的一种新型网络， 网络层的路由协议对于Ad HOC网络来说尤为
重要。首先阐述了Ad hoc 网络的概念和特点，分析了自组网路由协议的有关情况。重点研究了按需路由协议中的AODV协
议及其中断链恢复的改进，结果表明在数据传输延迟和路由开销方面，采用改进的本地修复方法都可以使性能获得一定程
度的提高-Abstract：The Ad hoc network is a kind of new network that appears with the development of wireless communication technology，the
muting protocol in network layer is very important to Ad hoc network． The concept and characteristics of Ad hoc network was introduced
firstly， and the muting protocol was analyzed． Th e AODV protocol Was mainly discussed an d improved in restore of interrupt
link．It is proved that in transmission delay and muting consuming improved local restore method could advance the performance． Platform: |
Size: 226304 |
Author:manyhappy |
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Description: 开发人员使用JavaScript的一个主要原因就是可以避免回发过程中带来的页面刷新。例如我们可以根据用户的需要使用Treeview控件来展开和折叠相应的数据节点。当你展开一个节点时，该Treeview控件将会利用JavaScript读取服务器上的子节点信息，然后平滑无刷新地插入这些新节点。如果没有使用JavaScript的话，Treeview控件将会因为页面的回发而重新构建。不但用户会发现因页面刷新而带来的延迟，而且页面极有可能回复到原来的状态，即丢失前面所展开的那些子节点信息。对于服务器端来说，因为每次回发的过程中都要处理大量的视图状态（View State）信息，这也会严重影响程序的整体执行性能。在ASP.NET 2.0中，引入了一个称为"客户端回调"的功能，利用这个内建的解决方案我们可以轻松实现客户端脚本和服务器端代码间的交互，从而避免了页面因回发带来的频繁刷新。-The use of JavaScript developers is a major cause of hair to avoid the process of bringing back the page to refresh. For example we can use according to the Treeview control necessary to expand and collapse the corresponding data node. When you expand a node, the Treeview control server will use JavaScript to read information on the child nodes, then no smooth set to insert the new node. If you are not using JavaScript, then, Treeview control will return because the page and rebuild hair. Users will find that not only refresh the page because of the delay brought about, but the page is very likely reply to the original status, namely, the loss of those who started in front of the sub-node information. For server-side, the hair back every time because the process must deal with many view status (View State) information, which will seriously affect the performance of the overall implementation process. In ASP.NET 2.0, the introduction of a group called the "Client Callback" feature, use Platform: |
Size: 253952 |
Author:王若 |
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Description: 局域网视频监控系统,本系统属于小型的局域网监控系统，可以对某一台计算机进行屏幕监控，本系统主要实现以下功能：
系统采用人机交互的方式，界面美观友好。
屏幕信息需要时时显示，网络延时不能大于1秒。
服务器端可以随时运行，只要客户端运行，就能够显示屏幕信息。
系统运行时占用内存不能大于10MB，以免影响系统性能。
客户端运行时需要隐藏显示窗口，起其感觉不到在运行。
-The system belong to a small local area network monitoring system can be carried out on a computer screen monitoring, implementation of this system is mainly the following functions:
Human-Computer Interaction system the way attractive and friendly interface.
screen display information required from time to time, the network delay should not exceed one second.
can run server-side, as long as the client is running, information on the display screen can.
system memory run-time should not exceed 10MB, so as not to affect system performance.
necessary run-time client to hide the window, starting at less than the feeling of running. Platform: |
Size: 454656 |
Author:yingying |
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Description: 本代码为编码开关代码，编码开关也就是数字音响中的
360度旋转的数字音量以及显示器上用的（单键飞梭开
关）等类似鼠标滚轮的手动计数输入设备。
我使用的编码开关为5个引脚的，其中2个引脚为按下
转轮开关（也就相当于鼠标中键）。另外3个引脚用来
检测旋转方向以及旋转步数的检测端。引脚分别为a,b,c
b接地a，c分别接到P2.0和P2.1口并分别接两个10K上拉
电阻，并且a，c需要分别对地接一个104的电容，否则
因为编码开关的触点抖动会引起轻微误动作。本程序不
使用定时器，不占用中断，不使用延时代码，并对每个
细分步数进行判断，避免一切误动作，性能超级稳定。
我使用的编码器是APLS的EC11B可以参照附件的时序图
编码器控制流水灯最能说明问题，下面是以一段流水
灯来演示。-Code for encoding the switch code, coding switch is in the digital audio
The number of 360-degree rotating display with the volume, as well as the (one-touch open Shuttle
Clearance) and similar to manually count the mouse wheel input device.
I use the code switch for the 5-pin, 2 pin for which the press
Rotary switch (it is equivalent to middle mouse button). In addition to 3-pin
Detection of rotation direction and rotation end detection step. Pin, respectively, for a, b, c
b grounding a, c, respectively, from P2.0 and P2.1, respectively, then the mouth and pull the two 10K
Resistance, and a, c, respectively, of the need to take a capacitance 104, or
Because the coding of the contact switch will cause a slight jitter malfunction. This procedure does not
The use of timers, interrupt off, do not use delay code, and each
Determine the number of sub-step, to avoid all the wrong moves, super stable performance.
I use the encoder is the APLS can refer to the annex EC11B Platform: |
Size: 806912 |
Author:李波 |
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Description: 分析了IP 电话系统中回声的特点, 并针对其回声具有路径延迟、延迟抖动大等特点, 提出
了一种基于延迟分析的自适应回声消除器设计的新思想和相关算法。介绍了自适应回声消除器的
基本结构及各个功能模块, 例如: 变阶数自适应滤波器, 语音状态检测器, 延迟分析器和NLM S 算
法控制器. 本文还详细论述了以TM S320C6201DSP 为硬件平台来实现能运用在IP 电话网关中的
自适应回声消除器及其在IP 电话系统中的连接关系。在文章的最后, 列举了对自适应回声消除器
的性能测试结果, 并分析了自适应回声消除器的优点, 证明了自适应回声消除器能很好地解决IP
电话系统中的回声消除问题。-Analysis of the IP telephone system in the characteristics of echo, and echo with a path for its delay, delay jitter features and so on, the
A delay based on the analysis of adaptive echo cancellation design of the new ideas and related algorithms. Introduced the adaptive echo cancellation device
The basic structure and the various functional modules, such as: change the order of adaptive filter, voice status detector, the delay count analyzers and NLM S
Law controller. This article also discussed in detail in TM S320C6201DSP to achieve for the hardware platform to use in the IP Phone Gateway
Adaptive echo cancellation and its IP phone system in the connections. Finally, listed on the adaptive echo canceller
The performance test results and analysis of the adaptive advantages of echo cancellation devices to prove that the adaptive echo canceller can be a good solution to IP
Telephone system in the echo cancellation problem. Platform: |
Size: 259072 |
Author:wlch |
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Description: 利用位图显示和时间延迟实现一个简单的数码时钟，表现数码窗口类的使用方法及如何处理系统的时间。-The use of digital map display and the time delay in the realization of a simple digital clock, the performance of digital window class and how to use the time to deal with the system. Platform: |
Size: 27648 |
Author:王志 |
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Description: This a simulator written in Tcl to simulate a network node carrying GSM and GPRS traffics with QoS mechanisms. The payload type including circuit-switched voice, VoIP and web traffic, and the performance including packet drop, delay can be analyzed. The implemented QoS mechanism is DiffServ, with 4 RED queues for different services with different priorities.-This is a simulator written in Tcl to simulate a network node carrying GSM and GPRS traffics with QoS mechanisms. The payload type including circuit-switched voice, VoIP and web traffic, and the performance including packet drop, delay can be analyzed. The implemented QoS mechanism is DiffServ, with 4 RED queues for different services with different priorities. Platform: |
Size: 26256384 |
Author:wang haibo |
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Description: Aodv for NS-2. A mobile ad-hoc network (MANET) is a kind of wireless ad-hoc network, and is a self-configuring
network of mobile routers connected wirelessly. MANET may operate in a standalone fashion, or may
be connected to the larger Internet. Many routing protocols have been developed for MANETs over
the past few years. This project evaluated three specific MANET routing protocols which are Ad-hoc
On-demand Distance Vector (AODV), Dynamic Source Routing (DSR) and Dynamic MANET Ondemand
routing protocol (DYMO) to better understand the major characteristics of these routing
protocols. Different performance aspects were investigated in this project including packet delivery
ratio, routing overhead, throughput and average end-to-end delay.-Aodv for NS-2. A mobile ad-hoc network (MANET) is a kind of wireless ad-hoc network, and is a self-configuring
network of mobile routers connected wirelessly. MANET may operate in a standalone fashion, or may
be connected to the larger Internet. Many routing protocols have been developed for MANETs over
the past few years. This project evaluated three specific MANET routing protocols which are Ad-hoc
On-demand Distance Vector (AODV), Dynamic Source Routing (DSR) and Dynamic MANET Ondemand
routing protocol (DYMO) to better understand the major characteristics of these routing
protocols. Different performance aspects were investigated in this project including packet delivery
ratio, routing overhead, throughput and average end-to-end delay. Platform: |
Size: 32768 |
Author:Andre |
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Description: 用NS- 2 仿真各种路由协议性能时用到的传统运动场景发生器存在两个缺陷: 运动状态不能迅速过渡到稳态, 节点速度的
均匀分布区间起始值只能为0。为了弥补上述缺陷, Tracy Camp 研制了稳态运动场景发生器。通过仿真验证了采用该发生器可大
大缩短仿真时间, 在此基础上仿真AODV 和DSDV 两种路由协议, 首次从吞吐量、协议包开销、平均延迟三个方面对稳态运动场景
下的两种路由协议性能进行分析, 得出结论表明采用稳态运动场景进行路由协议仿真是非常必要的。
关键词: 稳态运动场景 setdest 更新过程 Random Waypoint-Abstr act: As a module of NS2, the traditional movement scenario generator, when simulating routing protocol, has two limitations.
One is that the transition time of stable status is long, and the other is that the uniform- distributing low bound of node speed is
only zero.To remedy these faults, Tracy Camp has developed a stable movement scenario generator.The simulation proves that
simulation time can be reduced largely by using this generator.Based on this result, a simulation for AODV and DSDV routing
protocol is implemented.Then the performance of two protocols is analyzed on three aspects: throughput, routing overhead packets,
average delay.At last the conclusion is drawn, which shows it is essential to adopt stable movement for simulation of routing
protocols.
Key words: stable movement scenario setdest renewal process Random Waypoint Platform: |
Size: 172032 |
Author:王立 |
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Description: 局域网视频监控本系统属于小型的局域网监控系统，可以对某一台计算机进行屏幕监控，本系统主要实现以下功能：
系统采用人机交互的方式，界面美观友好。
屏幕信息需要时时显示，网络延时不能大于1秒。
服务器端可以随时运行，只要客户端运行，就能够显示屏幕信息。
系统运行时占用内存不能大于10MB，以免影响系统性能。
客户端运行时需要隐藏显示窗口，起其感觉不到在运行。
-LAN video surveillance of the system are small in the local area network monitoring system can be carried out on a computer monitor screen, the system is mainly to achieve the following features: system the way human-computer interaction, interface and friendly appearance. screen display information needs from time to time, network delay can not be greater than 1 second. can run server-side, as long as the client is running, information will be able to display screen. memory run-time system can not be larger than 10MB, so as not to affect system performance. client need to hide run-time display window, not from the feeling running. Platform: |
Size: 562176 |
Author:wuxinyu |
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Description: The multipath performance of a given signal/receiver combination depends on various signal and receiver parameters like signal type/modulation scheme pre correlation bandwidth and filter characteristics, chipping rate of code ,relative power levels of multipath signals ,chip spacing between correlators and type of discriminator used for tracking.
For the following analyses the influence of code multipath will be illustrated by means of multipath error envelopes.
In these diagrams, the resulting ranging errors are plotted as a function of geometric path delay .the computation of
multipath errors envelops is based on the assumption, that the direct signal component is always available and that only one
multipath signal is present-The multipath performance of a given signal/receiver combination depends on various signal and receiver parameters like signal type/modulation scheme pre correlation bandwidth and filter characteristics, chipping rate of code ,relative power levels of multipath signals ,chip spacing between correlators and type of discriminator used for tracking.
For the following analyses the influence of code multipath will be illustrated by means of multipath error envelopes.
In these diagrams, the resulting ranging errors are plotted as a function of geometric path delay .the computation of
multipath errors envelops is based on the assumption, that the direct signal component is always available and that only one
multipath signal is present Platform: |
Size: 5120 |
Author:Rafal |
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Description: This a 802.15.4 simulator for star topology. This provides energy consumption, throughput, delay, and many other performance metrics.-This is a 802.15.4 simulator for star topology. This provides energy consumption, throughput, delay, and many other performance metrics. Platform: |
Size: 822272 |
Author:kwook |
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Description: This paper presents the simulation of a simple First Order plus Delay Time (FOPDT) process model using
advanced control algorithms. Specifically, these advanced algorithms are the IMC-based PID controller, the Model
Predictive Controller (MPC) and the Proportional-Integral-Plus Controller (PIP) and their performance is compared
with the conventional Proportional – Integral – Derivative (PID) algorithm. The simulations took place using the
Matlab/Simulink™ software.-This paper presents the simulation of a simple First Order plus Delay Time (FOPDT) process model using
advanced control algorithms. Specifically, these advanced algorithms are the IMC-based PID controller, the Model
Predictive Controller (MPC) and the Proportional-Integral-Plus Controller (PIP) and their performance is compared
with the conventional Proportional – Integral – Derivative (PID) algorithm. The simulations took place using the
Matlab/Simulink™ software. Platform: |
Size: 433152 |
Author:chris kasta |
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Description: 这是一个关于fpga不同语法进行分频产生延时多少的简易分频测试程序，可以用来检查不同分频语法所用延时多少及性能测试-This is a different syntax on the fpga delay resulting sub-band frequency of the number of simple sub-test procedure can be used to check the syntax of the different sub-band number used in delay and performance tests ... ... Platform: |
Size: 601088 |
Author:catking |
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Description: 工业网络协议的设计是网络控制系统分析和设计的重要内容. 网络诱导的延时值越小, 则越有利于系统的稳定和控制
算法的设计. 在工业以太网络通信协议( IECP) 模型中, 工业通信协议一般建立在传输层或是应用层. 通过工业通信模式、数据
报和IECP 通信程序, 详细介绍了IECP 的设计. 提出了网络协议的性能指标,-Industrial network protocol is designed to network control systems analysis and design of important content. The smaller the value of network-induced delay, the more conducive to stability of the system and control algorithm design. In the industrial Ethernet network communication protocol (IECP) model industrial communication protocol generally based on the transport layer or application layer. through industrial communication mode, data reporting and IECP communication program, described in detail IECP design. proposed network protocol performance indicators, Platform: |
Size: 453632 |
Author:小矮人 |
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Description: Deploying Voice over IP (VoIP) successfully in a data network has some unexpected pitfalls. In previous papers, we’ve explored how to do a Voice Readiness Assessment [1] and looked at focused planning and design tips [2,3]. This paper describes changes you can make to improve how a data network handles VoIP traffic – that is, how you can reduce one-way delay, jitter, and data loss for VoIP traffic, while retaining the performance of your other business-critical network applications. Platform: |
Size: 240640 |
Author:primitive_man |
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Description: Current Peer-to-Peer (P2P) systems were developed and
implemented as a result of a direct requirement/demand without an
overall functional architecture. This makes the performance of the
resulting systems far from optimal because other aspects of a
complete system have not received sufficient attention. Moreover,
the lack of standardization in functional architectures of P2P
systems will also restrict the interoperability amongst the systems
thereby reducing tangible benefits for Internet users. Inspired by
the TCP/IP model, this paper introduces PARM: a Physically-
Aware Reference Model for Overlay Internetworking. PARM
divides major functional P2P system tasks into components in a
layered structure to enable a more modular communications
approach so that each task can be tackled individually and
efficiently. Simulation results indicate that PARM helps to produce
better performance overlays with desirable features such as
decentralization, self-organization, and minimal delay penalty. Platform: |
Size: 209920 |
Author:hanh |
Hits:
Search - delay performance