这个网站上的一系列讲解NS2的内容真的是深入浅出,看完立刻豁然开朗.所以就接连转了几篇. Scheduling Events那篇里的例子特别好,看完就懂了. http://www.mathcs.emory.edu/~cheung/Courses/558-old/Syllabus/90-NS/ NS Simulation Basic Common NS classes The following figure shows the most commonly used NS classes in w…

NS Simulation: Scheduling Events Simulation time A similation system (such as NS) must have a built-in simulation clock - it represents the "clock" in the real world. You can examine (read) the value of the simulation clock by using the now comm…

要求: 1.complie a verilog/systemverilog design using vcs 2.simulate a verilog/systemverilog design vcs ===> c===>binary(编译之后有一个目录csrc生成) step1 : compile step2: simv link verilog/sv files ==> c files ==> object files ====> simv(executable) PLI…

Studying TCP's Throughput and Goodput using NS What is Throughput Throughput is the amount of data received by the destination. The Average Throughput is the throughput per unit of time Example: Suppose a TCP receiver receives 60 M Bytes of data in 1…

Studying TCP's Congestion Window using NS How to obtain TCP's CWND value The most important value that determine the behavior of TCP is the congestion window size or traditionally abreviated as CWND In NS, every TCP-type class (Agent/TCP/Tahoe, (Agen…

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首先,编辑一下yepnope,生成yepnope.jsp,如下: <%@ page language="java" pageEncoding="UTF-8"%><script type="text/javascript" src="${ctx}/resources/loader/yepnope.min.js"></script><script type="text/javas…

Basic 概述 Basic 认证是HTTP 中非常简单的认证方式,因为简单,所以不是很安全,不过仍然非常常用. 当一个客户端向一个需要认证的HTTP服务器进行数据请求时,如果之前没有认证过,HTTP服务器会返回401状态码,要求客户端输入用户名和密码.用户输入用户名和密码后,用户名和密码会经过BASE64加密附加到请求信息中再次请求HTTP服务器,HTTP服务器会根据请求头携带的认证信息,决定是否认证成功及做出相应的响应. 使用Tomcat进行Basic认证 如果熟悉Tomcat的朋友,肯定知…

摘要:这2个单词 还是用英文解释,比较准确.按我的理解:simulation就是模拟,可以做些改变. emulation是仿真,是按照原来的样子进行部署,不可以改变. Yes, the concepts are very different. A simulation is a system that behaves similar to something else, but is implemented in an entirely different way. It provides th…

In digital logic simulation, a delta cycles are evaluation of expressions, followed by value updates, causing more evaluations, and more value updates, and so on. Each time through the loop is one delta cycle. Different languages have specific defini…