设计模式：可复用面向对象软件设计基础（附源码) 设计模式：可复用面向对象软件设计基础（附源码) 设计模式：可复用面向对象软件设计基础（附源码)

针对现有预留子载波TR 技术对无线OFDM信号峰均比（PAPR）抑制性能效率低，且难以同时兼顾峰均比抑制、误码率（BER）性能损失及带外频谱分量扩展的问题，提出一种联合智能梯度映射主动星座扩展ACE的预留子载波峰均比抑制ACE-TR算法，能以较低的复杂度同时对信号峰均比和接收端误码率性能进行联合优化，并在迭代过程中消除因限幅处理所导致的信号带外频谱分量再生；特别是，由于在优化迭代过程中可以对迭代参数进行自适应调整，能够有效提高算法的适用灵活性。对算法进行了全面深入的理论分析，推导了其可获得的PAPR 抑制增益理论界和接收信号误码率性能理论值。理论分析与仿真表明，ACE-TR 算法能以更快的收敛速度产生所需的削峰信号，并同时获得优异的峰均比抑制、误码率及带外功率谱性能。

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大容量轨道角动量复用光通信，王超峰，杨博，该研究提出了一种基于轨道角动量（Orbital angular momentum: OAM）复用的大容量光通信系统。利用波长与轨道角动量联合复用，成功实现了系�

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本资源分别含有《设计模式:可复用面向对象软件的基础》中英文版本。读者可以下载后进行对照越多。两个都是 PDF 格式的，英文版带有 PDF 书签，大小 4.1 MB，中文版按章节独立成册，大小 10.3 MB。 《设计模式:可复用面向对象软件的基础》，英文名《Design Patterns:Elements of Reusable Object-Oriented software》，是公认的设计模式的泰山北斗。作者（美）Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides，翻译：李英军 马晓星 蔡敏 刘建中。 英文版《Design Patterns:Elements of Reusable Object-Oriented software》内容简介： 　　 Capturing a wealth of experience about the design of object-oriented software, four top-notch designers present a catalog of simple and succinct solutions to commonly occur ring design problems. Previously undocumented, these 23 patterns allow designers to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions themselves. 　　 The authors begin by describing what patterns are and how they can help you design object-oriented software. They then go on to systematically name, explain, evaluate, and catalog recurring designs in object-oriented systems. With Design Patterns: Elements of Reusable Object-Oriented Software as your guide, you will learn how these important patterns fit into the software development process, and how you can leverage them to solve your own design problems most efficiently. 　　 Each pattern describes the circumstances in which it is applicable, when it can be applied in view of other design constraints, and the consequences and trade-offs of using the pattern within a larger design. AII patterns are compiled from real systems and are based on real-world examples. Each pattern also includes code that demonstrates how it may be implemented in object-oriented programming languages like C++ or Smalltalk. 英文版《Design Patterns:Elements of Reusable Object-Oriented software》目录： preface foreword guide to readers 1 introduction 1.1 what is a design pattern? 1.2 design patterns in smalltalk mvc 1.3 describing design patterns l.4 the catalog of design patterns 1.5 organizing the catalog 1.6 how design patterns

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TCP网络编程IO复用服务器例子，使用select+多线程。运行方法，linux下，先执行server，再执行client，客户端即可获得服务端的当前时间。

《设计模式-可复用面向对象软件的基础》之源码下载地址:http://hillside.net/patterns/DPBook/Source.html(ftp://st.cs.uiuc.edu/pub/patterns/dpcat/DPCPP.zip)