一、Introduction
1. Representation of LTI systems
a. Impulse response: response of system to an impulse
b. Frequency response: response of system to a complex exponential exp(jω) for all possible frequencies f (ω).
c. Transfer function: Laplace transform and Z transform of impulse response
2. Significance of unit impulse
二、DT-LTI:Convolution Sum
1. Output
2. Impulse response of LTI system H
系统的输出是系统对时移脉冲的响应的加权和。
3. Convolution sum
4. Convolution Sum Evaluation Procedure
5. Sequence Convolution Algebra
(1)Commutative Property
(2)Associative Property
(3)Distributive Property
6. Properties of DT-LTI Systems
(1)Memoryless
(2)Stability
(3)Causality
三、CT-LTI:Convolution Integral
1. The Convolution Integral
(1)Output
(2)Impulse response of LTI system H
(3)
2. Convolution Integral Evaluation Procedure
a. 变换变量,画图 b. 分区间,求值 c. 求卷积
3. Interconnections of CT-LTI system
(1)Parallel Connection of CT-LTI system
(2)Cascade Connection of CT-LTI system
4. Convolution Algebra
5. Response to a Step Excitation
6. Properties of CT-LTI system
(1) Systems with/without memory
(2) Causality
(3) Stability
四、Differential and Difference Equation Representations of LTI systems
1. The general form of a linear constant-coefficient differential equation
2. Solving Differential and Difference Equations
3. The Homogeneous Solution (通解)