Description: Iperf 是一个网络性能测试工具。Iperf可以测试最大TCP和UDP带宽性能。Iperf具有多种参数和UDP特性，可以根据需要调整。Iperf可以报告带宽，延迟抖动和数据包丢失。
iperf 分为两种版本，unix/linux版和windows版，unix/linux版更新比较快，版本最新。windows版更新慢。windows版的iperf叫jperf，或者xjperf。jperf是在iperf基础上开发了更好的UI和新的功能。-Iperf is a network performance testing tools. Iperf can test the maximum TCP and UDP bandwidth performance. The Iperf have a wide range of parameters and UDP characteristics, can be adjusted. Iperf can report bandwidth, delay, jitter and packet loss. The iperf divided into two versions of unix/linux version and the version of windows, unix/linux version update faster latest version. windows update slow. windows version the the iperf call jperf, or xjperf. jperf iperf developed on the basis of a better UI and new features. Platform: |
Size: 2826240 |
Author:姚成富 |
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Description: The use of Internet Protocol Suite of TCP/UDP in
environments characterized by high delay and high Link Error
rates result in significant degradation of the Protocol
Performance. The DTN Bundle Protocol can be used in such scenarios. Performance evaluation of Delay-Tolerant Network Bundle Protocol in a live network is difficult due to the
absence of networks characterized by extreme environs,The use of Internet Protocol Suite of TCP/UDP in
environments characterized by high delay and high Link Error
rates result in significant degradation of the Protocol
Performance. The DTN Bundle Protocol can be used in such scenarios. Performance evaluation of Delay-Tolerant Network Bundle Protocol in a live network is difficult due to the
absence of networks characterized by extreme environs Platform: |
Size: 1474560 |
Author:Mohd Elsoufi |
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Description: robotic code In On-chip DSM and UDSM VLSI Circuits because of
increase device densitities and operating clock frequency the
crosstalk noise, crosstalk induced delay, interconnect delay ,
signal integrity affect the performance and reliability of the
chip. Due to increase in operating frequency beyond GHz
range inductive effects are dominant over capacitive effect.
Therefore, the coding methods used in RC Modeled are not
suitable in high frequency application circuits. This research
work includes TSPICE simulation of encoder based on
modified boundary shift coding used to reduce inductance
dominant crosstalk in coupled RLC modeled interconnects. -robotic code In On-chip DSM and UDSM VLSI Circuits because of
increase device densitities and operating clock frequency the
crosstalk noise, crosstalk induced delay, interconnect delay ,
signal integrity affect the performance and reliability of the
chip. Due to increase in operating frequency beyond GHz
range inductive effects are dominant over capacitive effect.
Therefore, the coding methods used in RC Modeled are not
suitable in high frequency application circuits. This research
work includes TSPICE simulation of encoder based on
modified boundary shift coding used to reduce inductance
dominant crosstalk in coupled RLC modeled interconnects. Platform: |
Size: 2048 |
Author:nithinr |
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Description: 能分析NS2下无线网络各种性能特征，有延迟，收包率，路由消耗等-Analysis adhoc network various performance characteristics, there is a delay, the rate of received packets, routing consumption Platform: |
Size: 3072 |
Author:lvzheng |
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Description: TRAINDIFFEVOL(NET,Pd,Tl,Ai,Q,TS,VV) takes these inputs,
NET - Neural network.
Pd - Delayed input vectors.
Tl - Layer target vectors.
Ai - Initial input delay conditions.
Q - Batch size.
TS - Time steps.
VV - Either empty matrix [] or structure of validation vectors.
and returns,
NET - Trained network.
TR - Training record of various values over each epoch:
TR.epoch - Epoch number.
TR.perf - Training performance.
TR.vperf - Validation performance.
TR.tperf - Test performance.
TR.mu - Adaptive mu value.-TRAINDIFFEVOL(NET,Pd,Tl,Ai,Q,TS,VV) takes these inputs,
NET - Neural network.
Pd - Delayed input vectors.
Tl - Layer target vectors.
Ai - Initial input delay conditions.
Q - Batch size.
TS - Time steps.
VV - Either empty matrix [] or structure of validation vectors.
and returns,
NET - Trained network.
TR - Training record of various values over each epoch:
TR.epoch - Epoch number.
TR.perf - Training performance.
TR.vperf - Validation performance.
TR.tperf - Test performance.
TR.mu - Adaptive mu value. Platform: |
Size: 6144 |
Author:Burak |
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Description: 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。-This system is a small LAN monitoring system, you can take a screen of a computer monitor, the system is mainly to achieve the following functions: The system uses human-computer interaction, friendly and beautiful interface. Need to constantly display screen information, network delay is not greater than 1 second. The server can run at any time, as long as the client is running, you can display on-screen information. Memory for the system is running can not be larger than 10MB, so as not to affect system performance. Client Runtime need to hide the display window, since it feel running. Platform: |
Size: 14468096 |
Author:黄兴业 |
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Description: 很好的GPS/INS超紧组合导航的文章，关键词：GPS,INS，超紧组合导航，抗干扰-The performance of an Ultra-Tightly Coupled
(UTC) Global Positioning System/Inertial Navigation System
(GPS/INS) is evaluated using a system simulation of the GPS
receiver and navigation processing. The UTC system being
analyzed uses a bank of pre-filters to estimate code delay error
and Doppler frequency error for each satellite. These outputs are
sent to a central Kalman navigation filter. This central processor
generates estimates of inertial navigation position, velocity, and
attitude errors IMU biases and user clock errors, which are
used to correct the navigation solution. In the UTC approach,
outputs from the central navigation processor, after projection
into satellite line-of-sight coordinates, are used to control the
code and carrier replica signals for each satellite channel. In
contrast, a conventional tightly coupled GPS/INS system uses
separate tracking loops for each satellite channel, which operate
autonomously. As a result, the UTC desig Platform: |
Size: 461824 |
Author:lili |
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Description: Performance Analysis of a Modified V-BLAST System With Delay Offsets Using Zero-Forcing Detection Platform: |
Size: 363520 |
Author:李辉 |
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Description: 多径效应的时域表示实际上就是不同路径来的信号存在随机的时延差。对于抗其它扩频信号干扰性能，及抗多址干扰性能。我们这里考虑简单的情况，只考虑一个用户干扰的情况，说明其具有抗多址干扰性能就行。-Multipath effect is actually a time domain representation of the signal path to the existence of different random time delay difference. Other spread spectrum signal for the anti-interference performance, and anti-MAI performance. Here we consider the simplest case, considering only one user interference, indicating its performance with anti-multiple access interference on the line. Platform: |
Size: 2048 |
Author:小多 |
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Description: ns2_zigbee
=== ====
Performance evaluation of Zigbee based on NS2
This repositories includes the codes of my undergraduate thesis.
1. zigbee.scn: network topology in 3D
2. zigbee.tcl: network script written in tcl
3. thr_drop_delay.awk: eualuation script written in awk
4. data: results of delay, throughput, jitter, and packet loss rate
5. out: figures of results
6. demo: demos of nam
7. thesis
How to
1. make sure zigbee.scn and zibee.tcl are in the same folder
2. cd to the folder by terminal
3. run ns zigbee.tcl
4. run awk -f thr_drop_delay.awk zigbee.tr
5. run gnuplot xxx.dat
-ns2_zigbee
==========
Performance evaluation of Zigbee based on NS2
This repositories includes the codes of my undergraduate thesis.
1. zigbee.scn: network topology in 3D
2. zigbee.tcl: network script written in tcl
3. thr_drop_delay.awk: eualuation script written in awk
4. data: results of delay, throughput, jitter, and packet loss rate
5. out: figures of results
6. demo: demos of nam
7. thesis
How to
1. make sure zigbee.scn and zibee.tcl are in the same folder
2. cd to the folder by terminal
3. run ns zigbee.tcl
4. run awk -f thr_drop_delay.awk zigbee.tr
5. run gnuplot xxx.dat
Platform: |
Size: 1358848 |
Author:Nguyen Hoang Anh |
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Description: 控制器延时程序，可实现对电力系统型式试验中触点性能延时出口控制器的延时控制-Controller delay procedures can be realized on the type of power system performance test delay export contacts controller delay control Platform: |
Size: 2048 |
Author:陈可友 |
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Description: UMTS和WLAN的融合数据通信仿真。模拟了UMTS和WLAN的融合数据通信的移动IP性能。仿真结果显示：移动IP的方法有高的切换延迟，网关方法有更好的时延特性。-Data fusion of UMTS and WLAN communication simulation. Simulation of the UMTS and WLAN fusion data communication in mobile IP performance. The
simulation results show: method of mobile IP has high handover latency, gateway method has better delay characteristics. Platform: |
Size: 2048 |
Author:a |
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Description: 随着计算机网络的迅速发展，发生了翻天覆地的变化，数字信息的保护已是一个刻不容缓的问题，由于数字内容很容易复制，修改，网络上的数字内容分发的，有很多的盗版，侵权行为，知识产权保护，以抵抗各种侵权行为，近年来一直是世界上一种新的信息安全技术的提出，数字水印技术，它是一种新的数字信息技术为数字文件的特定著作权利益的保护。现在流行的水印算法在国内外主要是基于空间域和变换域，从综合性能比较，变换域的方法更为优越，目前占主要地位，未来的趋势为变换域方法为主流。本文提出了一种离散余弦变换（DCT）基于变换域的彩色图像水印算法，从低频部分和高频部分的变换后的图像，水印信号嵌入到低频部分，可以保证水印的鲁棒性。-With the rapid development of computer network, happened to turn the world upside down change, the protection of digital information has been a brook no delay problem, due to the modification of digital content is very easy to copy, distribute, digital content on the Internet, there are a lot of piracy, infringement, protection of intellectual property rights, to resist all kinds of tort, in recent years has been is a new information security technology, digital watermarking technology, it is a kind of digital information technology for specific works of digital document right to protect the interests of the. Watermarking algorithm now popular at home and abroad is mainly based on spatial domain and transform domain, from the comparison of comprehensive performance, the transform domain approach is more superior, currently occupies the main position, future trends in the transform domain method for the mainstream. This paper presents a discrete cosine transform (DCT) color image waterm Platform: |
Size: 499712 |
Author:汪超 |
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Description: Anypath routing is proposed to improve the performance
of wireless networks by exploiting the spatial diversity and
broadcast nature of the wireless medium. In this paper, we study
anypath routing in wireless networks with directional antennas,
and propose DART (Directional Anypath RouTing), a crosslayer
design of MAC and routing layers. For the routing layer,
we propose two shortest directional anypath routing algorithms
based on two antenna models. Our routing algorithms are
simple and fast, thus are suitable for implementation in practical
protocols. For the MAC layer, we present a directional anycast
MAC, which is an enhancement to the IEEE 802.11 MAC, making
DART suitable for integration into current systems. Simulation
results show that DART can significantly reduce the packet
transmission delay.
Platform: |
Size: 491520 |
Author:fahim68 |
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Description: EMDA is based on a per-node reservation
of a block of contiguous transmission opportunities that are
properly dimensioned. Moreover, we further improve the neardeterministic
access of EMDA by using short jamming periods
just before these reservations. Extensive simulation results show
that our proposed MAC enlarges the voice capacity and uniformly
distribute it over the WMN. It also provide a better
performance in guaranteeing hard delay constraints, lower jitter
and lower packet losses compared to other MAC Platform: |
Size: 441344 |
Author:annariel |
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Description: 对EBPSK(Extended binary phase shift keying)调制雷达系统的特点，本文将其与传统的LFM(Linear frequency modulation)雷达系统进行综合性能比较。-he overall performances of EBPSK(Extended binary phase shift keying) modulation and LFM(Linear frequency modulation) radar systems are compared. First, the target detection performance base on CFAR(Constant False Alarm Rate) of two systems are analyzed under several conditions. As the time-delay is relatively large, the detection performance of EBPSK modulation radar system is better than LFM radar system. EBPSK modulation signals can combat the effect of Doppler spread on system performance in HF(High Frequency) channel. Platform: |
Size: 6144 |
Author:shell |
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Description: 局域网的多点访问方式主要有固定分配，随机分配和按需分配三大类型。本篇文章主要分析随机分配方式网络的各种性能指标，包括在各种协议工作方式下的输入业务量，吞吐量，平均归一化传输时延，系统稳定性等。-LAN multi-access methods are mainly fixed allocation, random allocation and distribution according to need three types. Various performance indicators This article analyzes the random distribution of the network, including input traffic under various protocols work, throughput, average normalized transmission delay, the system stability. Platform: |
Size: 109568 |
Author:lixianhe |
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Description: JavaScript 延时加载实例代码，延时加载效果，在一些大型的前端设计项目中，加载的处理是一个大方面，直接影响到网页性能，因此这方面的知识也是有必要掌握的。-JavaScript code examples delay loading, delay loading effects, in some large front-end design project, the processing load is a big aspect, directly affects the performance of web pages, so this knowledge is necessary to grasp. Platform: |
Size: 354304 |
Author:wpudn72 |
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Description: ALOHA接入协议仿真，对吞吐量和时延进行仿真分析，同时对比了有无捕获效应两种情况下的性能-ALOHA access protocol emulation, simulation throughput and delay analysis, and comparison of the performance of whether the capture effect in both cases Platform: |
Size: 2048 |
Author:纪鹏宇 |
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Search - delay performance