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- Enhanced Data for GSM Evolution
- Achievable Rate: 384 kb/s
- Improved RF bit-coding -- factor 3 more information in one 'RF-symbol'
- GMSK, the standard GSM modulation scheme
- 8-PSK used for EDGE modulation
- Gray coding: only one bit changes between adjacent symbols
- To avoid zero-crossing, each phase rotation gets an additional offset of 3pi/8
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