Very high speed integration circuits HDL 起源： 1985 年，美国国防部提出计划； 1987 年成为 IEEE1076 标准； 1993 年进一步修订完善； 是目前标准化程度最高，适应性最广的 HDL 语言； 特点：

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

§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

国防科技大学：《通信原理》PPT课件_第二章 模拟信源数字化与编码——时分多路复用通信

国防科技大学：《通信原理》PPT课件_第一章 绪论（王莹）

Two forms of Completeness Theorem Let Γ be a set of wffs. The following parts are equivalent. If Γ |= A then Γ ` A If Γ is consistent, then Γ is satisfiable

Interpretation An interpretation I of F is , where D is a non-empty set called the domain of individuals. I0 is a mapping defined on the constants of F satisfying 1. If c is an individual constant, then I0(c) ∈ D. 2. If f n is an n-ary function constant, then I0(f n) : Dn → D

Axiom Schemata for F Axiom Schema 1 A ∨ A ⊃ A Axiom Schema 2 A ⊃ (B ∨ A) Axiom Schema 3 A ⊃ B ⊃ (C ∨ A ⊃ (B ∨ C)) Axiom Schema 4 ∀xA ⊃ Sxt A where t is a term free for the individual variable x in A Axiom Schema 5 ∀x(A ∨ B) ⊃ (A ∨ ∀xB) provided that x is not free in A

Substitutivity of Equivalence Let A,M and N be wffs and let AMN be the result of replacing M by N at zero or more occurrences (henceforth called designate occurrences) of M in A. 1. AMN is a wff. 2. If |= M ≡ N then |= A ≡ AMN

Syntax Formation Rules for P The The Axiomatic Structure of P Theorems and Derived Rules