98.1 Introduction 98.2 Definitions of Failure, Fault, and Error 98.3 Failure Rate and Reliability 98.4 Relationship Between Reliability and Failure Rate 98.5 Mean Time to Failure 98.6 Mean Time to Repair 98.7 Mean Time Between Failures

97.1 Computer and Communications Security Physical Security Cryptology Software Security Hardware Security Network Security Personnel Security 97.2 Fundamentals of Cryptography Central Paradigms Pseudorandomness Zero-Knowledge

96.1 Introduction 96.2 Types of Operating Systems 96.3 Distributed Computing Systems 96.4 Fault-Tolerant Systems 96.5 Parallel Processing 96.6 Real-Time Systems 96.7 Operating System Structure 96.8 Industry Standards 96.9 Conclusions

95.1 Introduction 95.2 Classifications 95.3 Types of Parallel Processors

94.1 Databases Database Abstraction • Data Models • Relational Databases • Hierarchical Databases • Network Databases • Architecture of a DBMS • Data Integrity and Security • Emerging Trends 94.2 Rule-Based Expert Systems

倒13V/ue减少的dB数→增加的dB数

§5.1 位同步 §5.2 帧同步 §5.3 网同步 §5.4 数字复接原理

载波同步的方法一般分为两类： 一类是插入导频法，即在发送调制信号时插入载波分量， 使调制信号本身带有载波分量，接收端直接用窄带滤波和锁 相环捕获跟踪来提取载波。 另一类是自同步法或直接法。在抑制载波的调制中，用 非线性处理提取载波。 这一节主要讨论自同步法

§4.1 数字调制的基本原理 §4.2 数字调制方式及调制信号频谱特性 §4.3 数字信号的接收 §4.4 载波同步

§3.1 数字传输的基本理论 §3.2 数字基带信号传输的基本准则 §3.3 最佳基带传输系统 §3.4 均衡 §3.5 数字序列的扰码与解扰