Cellular Equipment White Papers
A Note on the Application of the Laurent Decomposition to the GSM GMSK Signaling Waveform
Overview
The GMSK signaling waveform is a constant envelope phase modulated sinusoid. This waveform presents
formidable challenges to receiver designers when considering the waveform as a phase modulated signal.
This note illustrates the application of the Laurent Decomposition to the GMSK waveform. This remarkably useful result allows the complicated phase modulated waveform to be represented as amplitude modulated pulses (AMP). Once the GMSK signal has been represented in the AMP format the rich results
of detection and estimation that have been developed for the AMP signaling structures may be applied.
The GSM cellular phone system uses GMSK as the on the air signaling waveform. This waveform has many interesting properties. It is fairly easy to generate and the constant envelope property allows it to be transmitted using relatively efficient amplifiers.
| Publisher | Tropian | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | August 2003 | Downloads | 49 |
| Format | White Papers | ||
| Topics | |||
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