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Description: GPRS(General Packet Radio Service)是通用分组无线业务的简称。GPRS是GSM Phase2.1规范实现的内容之一，能提供比现有GSM网9.6kbit/s更高的数据率。GPRS采用与GSM 相同的频段、频带宽度、突发结构、无线调制标准、跳频规则以及相同的TDMA帧结构。因此，在GSM系统的基础上构建GPRS系统时，GSM系统中的绝大部分部件都不需要作硬件改动，只需作软件升级。-GPRS (General Packet Radio Service) is a General Packet Radio Service abbreviation. GPRS GSM Phase2.1 norms to achieve one of the elements that can provide more than the existing GSM network 9.6kbit/s higher data rate. GSM and GPRS using the same frequency and bandwidth, unexpected structure, the wireless standard modulation, frequency hopping and the same rules TDMA frame structure. Therefore, in the GSM system builds on the GPRS system, the GSM system of most components do not need to make hardware changes, only for software upgrades.
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Size: 1072128 |
Author: 齐征 |
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Description:
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Size: 2048 |
Author: five |
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Description: OPNET中关于包交换的例子，初学者有用-OPNET packet-switched on the example of a useful beginners
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Size: 28672 |
Author: ligu |
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Description: SIMULATION OF PACKET DATA NETWORKS USING OPNET
In this paper we describe the use of the OPNET simulation tool for modeling and analysis of packet data networks.-SIMULATION OF PACKET DATA NETWORKS USING OPNET
In this paper we describe the use of the OPNET simulation tool for modeling and analysis of packet data networks.
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Size: 80896 |
Author: DAHMANI |
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Description: OPNET
教程中包交换程序实例，以仿真通过-packet-switching opnet
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Size: 95232 |
Author: caiwenlong |
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Description: 在opnet平台对离散时间仿真机制的基于包的通信进行了建模仿真-In the discrete-time simulation platform opnet packet-based communication mechanism for the modeling and simulation
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Size: 116736 |
Author: 杨彂珐 |
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Description: opnet仿真平台
这是packet switch的一个工程包。中心hub节点完成路由功能。周边node节点产生数据包并发送给目的节点。
适合初学者了解opnet\(^o^)/~-opnet simulation platform is a packet switch works package. Central hub node to complete routing. Peripheral node node generates data packets sent to destination node. Suitable for beginners to understand opnet \ (^ o ^)/~
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Size: 289792 |
Author: shan5217 |
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Description: In this paper we simulate a multi-hop self-organizing wireless
sensor network. The purpose of the simulation is to investigate,
quantitatively, the performance of our self-organizing network
design. In particular, we examine such parameters as network
formation time, data packet delivery performance, throughput,
and device duty cycle. In addition, we analyze the impact of
MAC and low-duty cycle protocols. We demonstrate that our
tree network has the capability of automatic network formation,
update, and recovery. The design also supports simple address
assignments and straightforward routing. We discuss our
approach, OPNET simulation design, and simulation results
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Size: 191488 |
Author: Leontin |
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Description: We developed an OPNET model for GPRS
The model implemented various GPRS-specific protocols
We presented implementation of two additional protocols in
an existing GPRS model:
RLC/MAC
BSSGP
Three simulated scenarios were used to verify the model
implementation
Additional simulations need to be performed in order to
explore the model scalability
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Size: 1926144 |
Author: Leontin |
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Description: General Packet Radio Service OPNET Model
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Size: 279552 |
Author: Torres |
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Description: This paper presents a comparative study of two well-known network simulators: OPNET Modeler and Ns-
2. Other studies in this area have generally been confined to just one simulator. The motivation of this paper is to
provide a guide to researchers undertaking packet-level network simulations. The simulator outputs were compared to
the output from a live network testbed. The experimental comparison consisted of deploying both CBR data traffic,
and an FTP session, both on the network testbed and the simulators. CBR data traffic was used due to its simplicity of
modeling. A custom analysis tool was employed to examine the behavior of the network in different background
traffic scenarios. The same scenarios were then recreated in the simulators in order to ascertain their realism. The
results show the necessity of fine-tuning the parameters within a simulator so that it closely tracks the behavior of a
real network.
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Size: 181248 |
Author: Faisel |
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Description: 在OPNET模型中，当包被传送到发送器请求发送后，实际中的情况是 包将立即被发送到通信信道上进行传输，因此OPNET必须对通信信道进行建模，也就是在模型中要实现物理层的特征，以便将信道对包产生的传输效果考虑进整个网络模型。OPNET将信道对包产生的传输效果建模为若干个计算阶段（称为pipeline stage），最终来判断该包能否被接收到。 -In the OPNET model, when the packet sent to the transmitter sends a request, the actual situation in the package will be immediately sent to the communication channel for transmission, so OPNET to model the communication channel, which is to be achieved in the model physical layer characteristics, in order to channel the transmission of packets have the effect to take into account the entire network model. OPNET will channel the effect of the transmission packet generation model calculation for the number of stages (called pipeline stage), finally to determine whether the packet was received.
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Size: 339968 |
Author: 王琛 |
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Description: 在本文中,我们描述了使用OPNET
仿真建模和分析工具的分组数据
网络。我们模拟两种类型的高性能
网络:光纤分布式数据接口
异步传输模式。我们将
协议性能的不同网络FDDI
在两个网络参数配置。我们也
一个简单的ATM网络模型和衡量
各种自动取款机服务类别下的性能。
最后,我们发展一套OPNET对漏过程模型
桶的拥塞控制算法。我们检查其
性能和影响交通模式(损失
和丛集尺寸)在ATM网络。
-In this paper we describe the use of the OPNET
simulation tool for modeling and analysis of packet data
networks. We simulate two types of high-performance
networks: Fiber Distributed Data Interface and
Asynchronous Transfer Mode. We examine the
performance of the FDDI protocol by varying network
parameters in two network configurations. We also
model a simple ATM network and measure its
performance under various ATM service categories.
Finally, we develop an OPNET process model for leaky
bucket congestion control algorithm. We examine its
performance and its effect on the traffic patterns (loss
and burst size) in an ATM network.
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Size: 81920 |
Author: 王琛 |
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Description: OPNET中包交换实验二的工程文件和源码，按照OPNET中帮助文档实现的，仿真结果相似。-OPNET packet switching in the project file and the source of the second experiment, in accordance with the the OPNET help documentation, simulation results similar.
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Size: 113664 |
Author: 刘开 |
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Description: packet creating code in opnet software
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Size: 6144 |
Author: saeidmot |
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Description: 该平台是使用OPNET网络仿真软件实现包交换功能，比陈敏上面的功能要多一些-The platform is using OPNET network simulation software packet switching functions than Chen above functions to be more
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Size: 403456 |
Author: 刘文鹏 |
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Description: packet creating code in opnet software
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Size: 6144 |
Author: utrkachi |
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Description: opnet14.5实现陈敏版opnet仿真书籍的包交换网络(Opnet14.5 implementation of Chen Min version of OPNET simulation books packet switching network)
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Size: 220160 |
Author: 栗子姐
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Description: OPNET软件的练习例子，关于pakcet switch的代码，运行可以使用(Practice example of OPNET software, code about packet switch, running can be used)
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Size: 772096 |
Author: 陌上孤魂
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Description: OPNET软件仿真包交换网络，并在其中加入排队模型并拓展网络拓扑，对于统计量有不同影响(OPNET software simulates packet switching network, adds queuing model and expands network topology, which has different influence on statistics)
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Size: 1585152 |
Author: 阿龙961109 |
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