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Channel Coding Theorem

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

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Spread Spectrum Modulation

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

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Source Coding Theorem

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

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Quadrature Phase Shift Keying

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

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Differential Phase Shift Keying

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

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Amplitude Shift Keying

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

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Frequency Shift Keying

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