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| Property | TETRA | GSM900 | GSM1800 | DECT | UTRA
FDD | UTRA
TDD |
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| Handset frequency (MHz) | 380–430 | 890–915 | 1710–1785 | 1800–1900 | 1920–1980 | 1900–1920,
2010–2025 |
| Multiple-access mode | TDMA/FDMA | TDMA/FDMA | TDMA/FDMA | TDMA/FDMA | Wideband CDMA | TD-CDMA |
| Modulation (uplink) | ¼/4-Differential quadrature phase shift keying (DQPSK) | Gaussian minimum shift keying (GMSK) | GMSK | Gaussian frequency shift keying | Dual-channel (QPSK) | Dual-channel QPSK |
| Channel spacing (kHz) | 25 | 200 | 200 | 1728 | 5000 | 5000 |
| Table I. Summary of current and emerging telecommunication systems characteristics. |
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