
Air Interface - Spectrum
• EDGE is spectrum compatible with GSM, i.e. it uses the same 200 kHz
channel spacing
GSM Air Interface
• Uses 0.3GMSK modulation: 1 bit/symbol
• Constant envelope
• 200 kHz channel bandwidth
Data
270.833 kB/s
Frequency
+67.708 kHz
-67.708 kHz
Phase
+90̓ -90̓
9
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