Difference between revisions of "GMSK"
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([https://en.wikipedia.org/wiki/Minimum-shift_keying#Gaussian_minimum-shift_keying Gaussian minimum-shift keying]) |
(GMSK waterfalls) |
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| − | == | + | == Introduction == |
GMSK is an acronym for Gaussian minimum-shift keying. | GMSK is an acronym for Gaussian minimum-shift keying. | ||
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GMSK is similar to standard minimum-shift keying (MSK); however, the digital data stream is first shaped with a Gaussian filter before being applied to a frequency modulator, and typically has much narrower phase shift angles than most MSK modulation systems. This has the advantage of reducing sideband power, which in turn reduces out-of-band interference between signal carriers in adjacent frequency channels. | GMSK is similar to standard minimum-shift keying (MSK); however, the digital data stream is first shaped with a Gaussian filter before being applied to a frequency modulator, and typically has much narrower phase shift angles than most MSK modulation systems. This has the advantage of reducing sideband power, which in turn reduces out-of-band interference between signal carriers in adjacent frequency channels. | ||
| + | |||
| + | == Waterfalls == | ||
| + | Example waterfalls below: | ||
| + | |||
| + | <gallery mode="packed" widths=310px heights=400px> | ||
| + | File:Waterfall 1524946 2020-01-11T14-57-12.png|[[GMSK]] | ||
| + | File:Waterfall_1493960_2020-01-05T04-44-29.png|[[GMSK1k2]] | ||
| + | File:Waterfall_1505060_2020-01-07T10-17-10.png|[[GMSK1k2]] | ||
| + | File:Waterfall_1521477_2020-01-10T19-31-32.png|[[GMSK2k4]] | ||
| + | File:Waterfall 1521029 2020-01-10T17-38-40.png|[[GMSK4k8]] | ||
| + | File:Waterfall 1521032 2020-01-10T17-55-29.png|[[GMSK4k8]] | ||
| + | File:Waterfall 1521108 2020-01-10T18-22-34.png|[[GMSK9k6]] | ||
| + | </gallery> | ||
== See also == | == See also == | ||
* [https://en.wikipedia.org/wiki/Minimum-shift_keying#Gaussian_minimum-shift_keying Gaussian minimum-shift keying] | * [https://en.wikipedia.org/wiki/Minimum-shift_keying#Gaussian_minimum-shift_keying Gaussian minimum-shift keying] | ||
| + | |||
| + | [[Category:RF Modes]] | ||
Latest revision as of 23:36, 14 January 2020
Introduction
GMSK is an acronym for Gaussian minimum-shift keying.
In digital communication, Gaussian minimum shift keying or GMSK is a continuous-phase frequency-shift keying modulation scheme.
GMSK is similar to standard minimum-shift keying (MSK); however, the digital data stream is first shaped with a Gaussian filter before being applied to a frequency modulator, and typically has much narrower phase shift angles than most MSK modulation systems. This has the advantage of reducing sideband power, which in turn reduces out-of-band interference between signal carriers in adjacent frequency channels.
Waterfalls
Example waterfalls below:
