Digital Communication is the exchange of data in digital form. For example, communications done over the internet is a simple form of digital communication.
Communication is the transmission of information from a sender to a receiver through some medium. Communication enables us to know what is happening around us. A person can chat with his or her distant relatives over the phone and thus the medium of communication is achieved over the telephone.
In order to understand the notion of digitizing information, it must first be understood that everything in nature, including sounds and images are originally or initially in analog before digital came to being. The Digital is simply an encoded approximation of the Analog.
Our day to day communication is in the form of signals. These signals, for example, sound signals, generally are analog in nature. When the communication needs to be established over a distance, then the analog signals are sent through, using different techniques for effective transmission which is known as Digital Transmission.
The regular methods of communication made use of analog signals for communications, which had a lot of disadvantages such as interference, distortion and other losses including lots of security breaches. In order to solve these problems, the signals are digitized using different techniques. The digitized signals allow communication to be more clear, smoother and accurate without errors.
Below are some features and characteristics of digital communication:
As signals are digitalized, there are lots of advantages of digital communications over analog communication such as:
Here we highlight some of the things you will learn in this course:
Introduction to Digital Communication and Difference between Digital Signal and Analogue Signals.
You will learn that Digital Signal involves signals in represented in form of zeros and ones. This signal unlike the analogue signal has advantages like:
You will learn the Elements of Digital Communication like :
Also you will learn about the Pulse Code Modulators(PCM), Differential PCM, Delta Modulator(DM) which produces more accurate and less distorted signals.
You will learn Multiplexing which entails passage of many signals through a medium called MUX to a single signal and also De-Multiplexing which involves the conversion of one signal via DEMUX into many signals.
You will learn the Spread Spectrum Technology which uses broad frequency pattern to transmit signal thereby ensuring less distortion, less noise, strong signal strength and quality signal output. It can be divided into Frequency Hopped Spread Spectrum FHSS and DSSS/CDMA.
Other areas includes Sampling and Encoding of signals, where Encoding entails arranging data format into packets that can be transmitted over the digital device in 0s and 1s. This course in depth teaches how digital information is transmitted over a communication channel. It also reveals how analogue signal can be converted to digital signal and vice versa and many more.
In The Full Course, you will learn everything you need to know about Digital Communication with Diploma Certificate to showcase your knowledge and competence.
Digital Communication - Introduction
Digital Communication - Analog to Digital
Digital Communication - Pulse Code Modulation
Digital Communication - Sampling
Digital Communication - Quantization
Digital Communication - Differential PCM
Digital Communication - Delta Modulation
Digital Communication - Techniques
Digital Communication - Line Codes
Digital Communication - Data Encoding Techniques
Digital Communication - Pulse Shaping
Digital Communication - Digital Modulation Techniques
Digital Communication - Amplitude Shift Keying
Digital Communication - Frequency Shift Keying
Digital Communication - Phase Shift Keying
Digital Communication - Quadrature Phase Shift Keying
Digital Communication - Differential Phase Shift Keying
Digital Communication - M-ary Encoding
Digital Communication - Information Theory
Digital Communication - Source Coding Theorem
Digital Communication - Channel Coding Theorem
Digital Communication - Error Control Coding
Digital Communication - Spread Spectrum Modulation
Digital Communication - Exams and Certification
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