📖 5. Analog Transmission

📖 From Data Communication and Networks • 155 questions available

About 5. Analog Transmission

Analog transmission refers to the process of sending continuous waveforms over bandpass channels, typically requiring modulation to shift baseband signals to higher frequencies suitable for the transmission medium. Techniques like Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), Phase Shift Keying (PSK), and Quadrature Amplitude Modulation (QAM) convert digital data into analog carriers, enabling efficient use of limited spectrum resources in radio, satellite, and telephone systems.

Conversely, when analog signals must traverse digital networks, they undergo digitization through sampling and quantization processes defined by the Nyquist theorem. This dual nature of analog transmission highlights the importance of understanding both traditional carrier modulation for wireless/broadcast media and the conversion interfaces that bridge legacy analog equipment with modern digital infrastructure, ensuring backward compatibility and spectral efficiency.

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🔄 Last updated: 2026-07-31