| Information | |
|---|---|
| has gloss | eng: In digital modulation, minimum-shift keying (MSK) is a type of continuous-phase frequency-shift keying that was developed in the late 1960s. Similar to OQPSK, MSK is encoded with bits alternating between quarternary components, with the Q component delayed by half the symbol period. However, instead of square pulses as OQPSK uses, MSK encodes each bit as a half sinusoid. This results in a constant-modulus signal, which reduces problems caused by non-linear distortion. In addition to being viewed as related to OQPSK, MSK can also be viewed as a continuous phase frequency shift keyed (CPFSK) signal with a frequency separation of one-half the bit rate. |
| lexicalization | eng: Minimum shift keying |
| lexicalization | eng: minimum-shift keying |
| instance of | (noun) (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase modulation |
| Meaning | |
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| French | |
| has gloss | fra: La modulation Minimum-shift keying (MSK) est un type de modulation numérique par déplacement de fréquence à phase continue. Sur le principe du OQPSK, la MSK est encodée par des bits alternant entre des moments en quadrature, la composante Q étant retardée de la durée dun symbole. Cependant, à linverse des signaux carrés utilisés en QPSK, la modulation MSK encode chaque bit sur une demi-sinusoïde. On obtient ainsi un signal de module constant, ce qui diminue les problèmes de distorsions non linéaires. |
| lexicalization | fra: Minimum-shift keying |
| Polish | |
| has gloss | pol: MSK (ang. Minimum Shift Keying) odmiana modulacji FSK fal elektromagnetycznych stosowana do przesyłu informacji w telekomunikacji. Jest to w praktyce modulacja CPFSK (ang. Continuous Phase FSK), czyli kluczowanie częstotliwości z ciągłą fazą. Charakteryzuje się dobrymi właściwościami energetycznymi. |
| lexicalization | pol: MSK |
| Chinese | |
| lexicalization | zho: 最小移频键控 |
| Media | |
|---|---|
| media:img | Diagram konstalacji MSK.jpg |
| media:img | Modulator MSK.jpg |
| media:img | Pi-by-O-QPSK Gray Coded.svg |
| media:img | Wykres kratowy fazy.jpg |
| media:img | Wykres kratowy fazy2.jpg |
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