Characteristics of Signals and Systems
Let us study the characteristics of signals and systems
- Causality: Signals and systems can have a causal system where the current output of the system depends on the present and past input values and is independent of future values. Causality is a requirement of some real-world systems.
- Time Invariant: Time Invariant system can be defined as a system where If an input signal is shifted by some period then the response is that the system is also shifted by the same period. This ensures that the system doesn’t change with time.
- Linearity: Linear systems are defined by their property of superposition. It can be understood as the system response of the sum of two inputs is equal to the sum of the output response of individual input values.
- Stability: Stability is necessary to ensure that the system doesn’t grow uncontrollably, therefore stable systems are the ones that generate bounded output for a bounded input.
- Convolution: Convolution is often used for calculating the output of the system by convoluting the input signal with the transfer function of the system.
Signals and Systems
Electronics and communication engineering deals with signal processing and signal transmission. This field of engineering is known as signals and systems. In this article, we will introduce the readers to signals and systems by defining all the necessary terms and discussing the components that make up the communication system.
We will also categorize signals and systems based on their classification and try to understand them through circuit diagrams. The later part of the article will talk about the characteristics, advantages, and applications of signals and systems along with some limitations. The article will conclude with some frequently asked questions that the readers can refer to.
Table of Content
- Signals and Systems
- Components
- Signals
- Types
- Analog Vs Digital Signals
- System
- Conversion of Analog to Digital Signals
- Why do we need to convert an Analog Signal to a Digital Signal?
- Continuous Systems vs Discrete Systems
- Characteristics
- Advantages
- Disadvantages
- Applications