error-rate performance of a modem

См. также в других словарях:

• Modem — For other uses, see Modem (disambiguation). A modem (modulator demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The… …   Wikipedia

• Modem für Parallelübertragung — Parallelmodem offen, Typ D20P A02 (01/1978) Parallelmodem geschlossen …   Deutsch Wikipedia

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• Phase-shift keying — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Quadrature amplitude modulation — (QAM) (Pronounced IPA|kwa:m) is a modulation scheme which conveys data by changing ( modulating ) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature… …   Wikipedia

• telecommunication — [tel΄ə kə myo͞o΄ni kā′shən] n. [also pl., with sing. or pl. v.] communication by electronic or electric means, as through radio, telephone, telegraph, television, or computers * * * tel·e·com·mu·ni·ca·tion (tĕlʹĭ kə myo͞o nĭ kāʹshən) n. 1. The… …   Universalium

• Spectral efficiency — Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific communication system. It is a measure of how efficiently a limited frequency spectrum is… …   Wikipedia

• Frame relay — In the context of computer networking, frame relay consists of an efficient data transmission technique used to send digital information. It is a message forwarding relay race like system in which data packets, called frames, are passed from one… …   Wikipedia

• Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• ADSL Max — is a cover term for the UK telco BT s range of commercial ADSL services that are rate adaptive and are deployed over BT phone lines. BT s ADSL Max services were launched in March 2006. Contents 1 Rate adaptive service 2 Max Premium 3 …   Wikipedia

• Kleinkartenleser — Datenübertragung mit Parallelmodem Parallelmodem offen, Typ D20P A02 (01/1978) …   Deutsch Wikipedia