- modulation-frequency-to-carrier ratio
- Техника: отношение модулирующей частоты к несущей
Универсальный англо-русский словарь. Академик.ру. 2011.
modulation-frequency-to-carrier ratio
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Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… … Wikipedia
Frequency modulation synthesis — In audio and music frequency modulation synthesis (or FM synthesis) is a form of audio synthesis where the timbre of a simple waveform is changed by frequency modulating it with a modulating frequency that is also in the audio range, resulting in … Wikipedia
frequency — n. (pl. ies) 1 commonness of occurrence. 2 a the state of being frequent; frequent occurrence. b the process of being repeated at short intervals. 3 Physics the rate of recurrence of a vibration, oscillation, cycle, etc.; the number of… … Useful english dictionary
Signal-to-noise ratio — For signal to noise ratio in statistics, see Cohen s d. Signal to noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined… … Wikipedia
Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · … Wikipedia
Pulse-code modulation — PCM redirects here. For other uses, see PCM (disambiguation). Pulse code modulation (PCM) is a method used to digitally represent sampled analog signals. It is the standard form for digital audio in computers and various Blu ray, Compact Disc and … Wikipedia
Pulse-width modulation — (PWM) of a signal or power source involves the modulation of its duty cycle, to either convey information over a communications channel or control the amount of power sent to a load. PrinciplePulse width modulation uses a square wave whose pulse… … Wikipedia
Multi-carrier code division multiple access — (MC CDMA) is a multiple access scheme used in OFDM based telecommunication systems, allowing the system to support multiple users at the same time. MC CDMA spreads each user symbol in the frequency domain. That is, each user symbol is carried… … Wikipedia
Variable-frequency drive — A variable frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor.cite book | first=Sylvester J. |… … Wikipedia
Single-carrier FDMA — (SC FDMA) is frequency division multiple access scheme. It can be viewed as a linearly precoded OFDMA scheme, henceforth LP OFDMA. Or, it can be viewed as a single carrier multiple access scheme. One prominent advantage over conventional OFDMA is … Wikipedia
Difference in the depth of modulation — The difference in the depth of modulation or DDM is used by instrument landing systems in conjunction with the associated airborne receiving equipment to define a position in airspace.[1] DDM is usually expressed in percentage but may also be… … Wikipedia
