Andmesignaali

andmesignaali is a signal that carries data for transmitting information between devices or within systems. It can be analog or digital and may represent information as binary digits or multi-level symbols depending on the signaling scheme used.

Digital data signals use discrete levels to encode information. They can be baseband, carrying data directly, or passband, where the data are modulated onto a carrier. Encoding and modulation schemes are used to improve reliability and efficiency, including non-return-to-zero (NRZ), Manchester encoding, quadrature amplitude modulation (QAM), and phase-shift keying (PSK).

Generation and processing: andmesignaali is produced by transmitters and shaped by filters before transmission. At the receiver, the signal is sampled, demodulated, and decoded to recover the original data. Noise, distortion, and attenuation can degrade quality; error-detection and error-correction techniques help maintain data integrity.

Metrics and applications: Data rate and bandwidth describe how much data can be transmitted per unit time. Signal-to-noise ratio and bit error rate are common quality measures. Andmesignaali underpin modern digital communications, computer networks, data storage interfaces, and many sensing and control systems.

See also: data communication, digital signaling, modulation, encoding.