03-12-2012, 04:44 PM
Gaussian Minimum Shift keying (GMSK)
GMSK.pptx (Size: 174.54 KB / Downloads: 37)
Gaussian Minimum Shift Keying (GMSK)
GMSK is the simple binary modulation scheme which may be derivative of MSK
In GMSK the side lobe levels of the spectrum are reduced by passing through the modulating NRZ data waveform through premodulation Gaussian pulse-shapping filter
Premodulation Gaussian filtering converts full response message signals into partial response scheme, where each transmitted symbol spans several bit periods
GMSK Transmitter
To generate GMSK signal is to pass NRZ message bits stream through Gaussian based band filter having impulse response fallowed by FM modulator.