Modulation And Its Necessity
Chapter Name : Communication Systems |
Sub Topic Code : 101_12_15_07_01 |
Topic Name : Modulation And Its Necessity |
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Sub Topic Name : Modulation And Its Necessity |
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Introduction
A communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of interconnection and interoperation to form an integrated whole.
Pre-Requisites:
Communications system
Activity:
Radio.
Real Life Question:
What is modulation?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Modulation | Modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal which typically contains information to be transmitted. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Broadcasting | Broadcasting is the distribution of audio and video content to a dispersed audience via any audio or visual mass communications medium, but usually one using electromagnetic radiation (radio waves). |
Real life uses :
Communication.
Places to visit :
Radio station.
Practical examples around us
| Examples | Explainations |
|---|---|
| Radio communication system | A radio communication system is composed of several communications subsystems that give exterior communications capabilities. |
What you learn in Theory:
Modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal which typically contains information to be transmitted.
What you learn in Practice:
Modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be physically transmitted.