Analog & Digital Communication 5 min read
Channel Capacity theorem
It is possible, in principle, to device a means where by a communication system will transmit information with an arbitrary…
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Mutual Information
On an average we require H(X) bits of information to specify one input symbol. However, if we are allowed to observe the…
Analog & Digital Communication 2 min read
Huffmann Coding Techniques
Huffman coding is an entropy encoding algorithm used for lossless datacompression. The term refers to the use of a variable-length code…
Analog & Digital Communication 10 min read
Shannon-Fano Algorithm for Data Compression
DATA COMPRESSION AND ITS TYPESData Compression, also known as source coding, is the process of encoding or converting data in…
Analog & Digital Communication 5 min read
Digital Communication – Error Control Coding
Noise or Error is the main problem in the signal, which disturbs the reliability of the communication system. Error control coding is…
Analog & Digital Communication 3 min read
Pulse Code Modulation
Modulation is the process of varying one or more parameters of a carrier signal in accordance with the instantaneous values of…
Analog & Digital Communication 4 min read
Entropy, Source Encoding Theorem
Source encoding theorem The discrete memory less source of entropy H(X), the average code word length (L) for any distortion less…
Analog & Digital Communication 3 min read
Pulse Communication
PAM Modulator The amplitude of a carrier pulse is altered in accordance to that of amplitude of message signal to…
Analog & Digital Communication 1 min read
Error Detection and Correction Techniques
Different Types Of Error Detection Techniques: a. Redundancy b. Echoplex c. Exact count encoding d. Parity e. Check sum f. Vertical Redundancy Check g. Horizontal Redundancy Check…
Analog & Digital Communication 4 min read
Data Communication Circuits, Data Communication Codes
When the modulation index is less than 1, the angle modulated systems are called low index. The bandwidth requirement of…
Analog & Digital Communication 3 min read
History of Data Communications
Though data communication may seem a relatively new innovation, the history of data connections dates to the early 19th century.…
Analog & Digital Communication 3 min read
Pulse Code Modulation
Modulation is the process of varying one or more parameters of a carrier signal in accordance with the instantaneous values of…