हिंदी माध्यम नोट्स
Digital electronics
Code Word , Code Rate , Code Vectors , Hamming Distance , Hamming Weight of a Code Word [w(x)]
IMPORTANT DEFINITIONS RELATED TO CODES Code Word The code word is the n bit encoded block of bits. As already…
ERROR DETECTION METHODS , Parity checking , Checksum error detection , Cyclic Redundancy Check (CRC)
ERROR DETECTION METHODS Before thinking of correcting the error introduced in the data bits, it is essential to first detect…
ARQ SYSTEM (AUTOMATIC REPEAT REQUEST) , types and arq system requirements
ARQ SYSTEM (AUTOMATIC REPEAT REQUEST) As discussed earlier, there earlier two basic systems of error detection and correction. The first…
ERROR CONTROL CONDING , Detection and Correction of Errors , Error detecting codes
ERROR CONTROL CONDING : INTRODUCTION When a digital signal is transmitted between two systems (such as computers) as shown in…
What is a Discrete Memoryless Channels (DMC) ? Explain , What do you mean by Information Rate?
What do you mean by Information Rate? , What is a Discrete Memoryless Channels (DMC) ? :- SHORT QUESTIONS WITH…
A voice grade channel of the telephone network has a bandwidth of 3.4 kHz. Calculate the information capacity of the telephone channel for a signal-to-noise ratio of 30 dB
EXAMPLE 9.56. A voice grade channel of the telephone network has a bandwidth of 3.4 kHz. Calculate the information capacity…
ENTROPY CODING , shannon fano coding example and huffman coding entropy formula
shannon fano coding example and huffman coding entropy formula :- ENTROPY CODING The design of a variable-length code such that…
Instantaneous Codes , Optimal Codes , The Kraft Inequality in digital communication
The Kraft Inequality in digital communication , Instantaneous Codes , Optimal Codes :- 9.19.3.6. Instantaneous Codes A uniquely decodable…
DIGITAL MULTIPLEXERS , MULTIPLEXING definition , techniques , Frequency , time Division Multiplexing (FDM)
MULTIPLEXING definition , techniques , Frequency , time Division Multiplexing (FDM) , DIGITAL MULTIPLEXERS Inside this Chapter Introduction multiplexing A…
pulse digital modulation scheme , Noise effect in PCM , digital communications , block diagram of DPCM
SUMMARY ■ The use of digital communications offers several important advantages as compared to analog communications. ■ Digital communications have…