Channel Coding Theorem, The noise present in a channel creates unwanted errors between the input and the output sequences of a digital communication system. The error probability shoul…Read More
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 the coding procedure done …Read More
Spread Spectrum Modulation, A collective class of signaling techniques are employed before transmitting a signal to provide a secure communication, known as the Spread Spectrum Modulation.…Read More
Digital Communication – Information Theory, Information is the source of a communication system, whether it is analog or digital. Information theory is a mathematical approach to the study of coding of in…Read More
Source Coding Theorem, The Code produced by a discrete memoryless source, has to be efficiently represented, which is an important problem in communications. For this to happen, there…Read More
Quadrature Phase Shift Keying, The Quadrature Phase Shift Keying (QPSK) is a variation of BPSK, and it is also a Double Side Band Suppressed Carrier (DSBSC) modulation scheme, which sends two…Read More
Differential Phase Shift Keying, In Differential Phase Shift Keying (DPSK) the phase of the modulated signal is shifted relative to the previous signal element. No reference signal is considere…Read More
Digital Communication – M-ary Encoding, The word binary represents two bits. M represents a digit that corresponds to the number of conditions, levels, or combinations possible for a given number of b…Read More
Amplitude Shift Keying, Amplitude Shift Keying (ASK) is a type of Amplitude Modulation which represents the binary data in the form of variations in the amplitude of a signal.…Read More
Frequency Shift Keying, Frequency Shift Keying (FSK) is the digital modulation technique in which the frequency of the carrier signal varies according to the digital signal changes. FS…Read More