Learn Digital Communication

Data transmission or digital communications is the transfer of data (a digital bit stream or a digitized analog signal[1]) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibers, wireless communication channels, storage media and computer buses. The data are represented as an electromagnetic signal, such as an electrical voltage, radiowave, microwave, or infrared signal.

Analog or analogue transmission is a transmission method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable. The messages are either represented by a sequence of pulses by means of a line code (baseband transmission), or by a limited set of continuously varying wave forms (passband transmission), using a digital modulation method. The passband modulation and corresponding demodulation (also known as detection) is carried out by modem equipment. According to the most common definition of digital signal, both baseband and passband signals representing bit-streams are considered as digital transmission, while an alternative definition only considers the baseband signal as digital, and passband transmission of digital data as a form of digital-to-analog conversion.


Learn Digital Communication


1. Analog to Digital
2. Pulse Code Modulation
3. Sampling
4. Quantization
5. Differential PCM
6. Delta Modulation
7. Techniques
8. Line Codes
9. Data Encoding Techniques
10. Pulse Shaping
11. Digital Modulation Techniques
12. Amplitude Shift Keying
13. Frequency Shift Keying
14. Phase Shift Keying
15. Quadrature Phase Shift Keying
16. Differential Phase Shift Keying
17. M-ary Encoding
18. Information Theory
19. Source Coding Theorem
20. Channel Coding Theorem
21. Error Control Coding
22. Spread Spectrum Modulation
23. Quick Guide

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