A reorganized and comprehensive major revision of a classic book, this edition provides a bridge between introductory digital communications and more advanced treatment of information theory. Completely updated to cover the latest developments, it presents state-of-the-art error control techniques. Coverage of the fundamentals of coding and the applications of codes to the design of real error control systems. Contains the most recent developments of coded modulation, trellises for codes, soft-decision decoding algorithms, turbo coding for reliable data transmission and other areas. There are two new chapters on Reed-Solomon codes and concatenated coding schemes. Also contains hundreds of new and revised examples; and more than 200 illustrations of code structures, encoding and decoding circuits and error performance of many important codes and error control coding systems. Appropriate for those with minimum mathematical background as a comprehensive reference for coding theory.

A reorganized and comprehensive major revision of a classic book, this edition provides a bridge between introductory digital communications and more advanced treatment of information theory. Completely updated to cover the latest developments, it presents state-of-the-art error control techniques. Coverage of the fundamentals of coding and the applications of codes to the design of real error control systems. Contains the most recent developments of coded modulation, trellises for codes, soft-decision decoding algorithms, turbo coding for reliable data transmission and other areas. There are two new chapters on Reed-Solomon codes and concatenated coding schemes. Also contains hundreds of new and revised examples; and more than 200 illustrations of code structures, encoding and decoding circuits and error performance of many important codes and error control coding systems. Appropriate for those with minimum mathematical background as a comprehensive reference for coding theory.

Numerical Analysis（数值分析）.Timothy Sauer( 2nd ed) Timothy Sauer的这本《数值分析》通俗易懂，主线明晰，程序丰富，具有突出的几何洞见和严密性，是工科生学数值分析的首选入门教材。理论的严格和理解的通俗并不相违背，没必要像有的教材那般云里雾里，故作高深。本书为高清第二版pdf，直接解压即可，有感于本网站其他相同资料积分太贵，特此分享，希望对大家有所帮助。

Chong, Zak - An Introduction To Optimization (Wiley, 2001), 2nd Ed

A Perl expert can solve a problem in a few lines of well-tested code. Now you can unlock these powers for yourself. Modern Perl teaches you how Perl really works. It's the only book that explains Perl thoroughly, from its philosophical roots to the pragmatic decisions that help you solve real problems--and keep them solved. You'll understand how the language fits together and discover the secrets used by the global Perl community. This beloved guide is now completely updated for Perl 5.22. When you have to solve a problem now, reach for Perl. When you have to solve a problem right, reach for Modern Perl. Discover how to scale your skills from one-liners to asynchronous Unicode-aware web services and everything in between. Modern Perl will take you from novice to proficient Perl hacker. You'll see which features of modern Perl will make you more productive, and which features of this well-loved language are best left in the past. Along the way, you'll take advantage of Perl to write well-tested, clear, maintainable code that evolves with you. Learn how the language works, how to take advantage of the CPAN's immense trove of time-tested solutions, and how to write clear, concise, powerful code that runs everywhere. Specific coverage explains how to use Moose, how to write testable code, and how to deploy and maintain real-world Perl applications. This new edition covers the new features of Perl 5.20 and Perl 5.22, including all the new operators, standard library changes, bug and security fixes, and productivity enhancements. It gives you what you need to use the most up-to-date Perl most effectively, all day, every day. What You Need: Perl 5.16 or newer (Perl 5.20 or 5.22 preferred). Installation/upgrade instructions included. Table of Contents Chapter 1. The Perl Philosophy Chapter 2. Perl and Its Community Chapter 3. The Perl Language Chapter 4. Operators Chapter 5. Functions Chapter 6. Regular Expressions and Matching Chapter 7. Objects Chapter 8. Style and

VHDL 实现IIC通信协议，并驱动hdc1080芯片，进行温湿度的测量与监控。eda目录下有编译好的模块，工程项目的入口在keshe3

本文主要介绍在使用阿里云 Redis 的开发规范，从下面几个方面进行说明。 键值设计 命令使用 客户端使用 相关工具 通过本文的介绍可以减少使用 Redis 过程带来的问题。 一、键值设计 1、key 名设计 可读性和可管理性 以业务名 (或数据库名) 为前缀(防止 key 冲突)，用冒号分隔，比如业务名: 表名: id ugc:video:1 简洁性 保证语义的前提下，控制 key 的长度，当 key 较多时，内存占用也不容忽视，例如： user:{uid}:friends:messages:{mid}简化为u:{uid}:fr:m:{mid}。 不要包含特殊字符 反例：包含空格、换行、

前言 还在用keys命令模糊匹配删除数据吗？这就是一颗随时爆炸的炸弹！ Redis中没有批量删除特定前缀key的指令，但我们往往需要根据前缀来删除，那么究竟该怎么做呢？可能你一通搜索后会得到下边的答案 redis-cli --raw keys "ops-coffee-*" | xargs redis-cli del 直接在linux下通过redis的keys命令匹配到所有的key，然后调用系统命令xargs来删除，看似非常完美，实则风险巨大 因为Redis的单线程服务模式，命令keys会阻塞正常的业务请求，如果你一次keys匹配的数量过多或者在del的时候遇到大key，都会直接导致业务的不可

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联邦学习（Federated Learning）分类及架构设计1、联邦学习起源2、联邦学习定义3、联邦学习的隐私保护机制4、联邦学习分类4.1 水平/横向联邦学习（Horizontal Federated Learning）4.2 垂直/纵向联邦学习（Vertical Federated Learning）4.3 联邦迁移学习（ Federated Transfer Learning）5、联邦学习系统架构5.1 水平联邦学习系统架构5.2 垂直联邦学习系统架构5.3 联邦迁移学习系统架构5.4 联邦学习激励机制6、联邦学习的应用 (声明：本文参考论文“Federated Machine Lea