Difference between revisions of "GMSK"

From SatNOGS
([https://en.wikipedia.org/wiki/Minimum-shift_keying#Gaussian_minimum-shift_keying Gaussian minimum-shift keying])
 
(GMSK waterfalls)
 
Line 1: Line 1:
== GMSK ==
+
== Introduction ==
 
GMSK is an acronym for Gaussian minimum-shift keying.
 
GMSK is an acronym for Gaussian minimum-shift keying.
  
Line 5: Line 5:
  
 
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:

See also