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> The 5G New Radio (NR) used 800MHz bandwidth, running on 15GHz Wow, 15Ghz signals are going to really suck for building penetration...
by djrogers 10y ago
> The 5G New Radio (NR) used 800MHz bandwidth, running on 15GHz
Wow, 15Ghz signals are going to really suck for building penetration...
- yaantc 10y agoYes. The issue is mitigated by massive beam-forming. Thanks to the high frequency antennas are small and it's possible to use many of them to steer a narrow beam toward the device. The antenna gain compensates for the pretty tough link budget at those high frequencies. For the number of antennas, I've seen anything from 64 to 1024 (amazing...). Even then millimeter waves are only for short distances (< ~300m). Of course, a very narrow beam makes life very interesting with mobile devices ;) But one of the first application of mmWaves should be last mile access, where this is not an issue. With this, fiber is required close to the home but the most costly last hundred meters can use wireless. This should reduce cost while still supporting very high throughput. TBC.