5G cm wave vs mm wave-Difference between cm wave and mm wave
This page compares 5G cm wave vs mm wave and describes difference between cm wave and mm wave 5G technologies. The useful links to difference between various terms are provided here.
Following table mentions comparison between 5G variants viz. sub 6GHz, cm wave (centimeter wave) and mm wave (millimeter wave). The cm wave is known by this name due to its wavelength in cm range while mm wave as it has wavelength in mm range.
| Features | 5G sub 6GHz | 5G cm wave | 5G mm wave |
|---|---|---|---|
| Frequency spectrum | 0.5 to 10 GHz | 3 to 30 GHz | 30 to 100 GHz |
| Bandwidth | approx. 5 to 40 MHz | approx. 40 to 200 MHz | approx. 400 to 2 GHz |
| Duplex topology | FDD/TDD | Dynamic TDD | Dynamic TDD |
| Transmit power(DL/UL) | >40dBm/ 23 dBm | <approx. 30dBm/23 dBm | <approx. 30dBm/23 dBm |
| Modulated waveform (DL/UL) | OFDMA/SC-FDMA | OFDMA/OFDMA | SC-TDMA/SC-TDMA |
| Multiple Access Type | Time and Frequency | Time and Frequency | Time |
| Multi Antenna technique | SU/MU Beamforming and Medium Rank |
SU/MU Beamforming and High Rank |
SU/MU Beamforming and Low Rank |
| TTI (Transmission Time Interval) | Flexible | Approx. 0.25 ms | Approx. 0.1 ms |
Reference: 5G Research at Nokia Networks
5G TECHNOLOGY RELATED LINKS
Following are the useful links on 5G technology:
5G tutorial
5G millimeter wave
Difference between 4G and 5G
5G testing and test equipments
5G network architecture
5G channel sounding
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