Innehållsförteckning
Vad är FDD?
Finansiell due diligence (FDD) är en form av due diligence som fokuserar på att samla in och analysera finansiell information om ett målföretag åt köparföretaget inför en företagstransaktion.
Vilken frekvens använder 5G?
5G använder det som kallas milimeter wave frequency, en våglängd som är mycket kortare än det som används av 4G och Wi-Fi. På grund av att våglängden är kortare har den även högre energi. WiFi använder en våglängd mellan 2,4-5 GHz och LTE använder 2,5 GHz. 5G använder en våglängder upp till 300 GHz.
What is the difference between FDD and TDD in LTE?
TDD merely requires an unpaired spectrum for deployment. What this means is, you can deploy LTE on TDD using unpaired spectrum or. even small availability of spectrum. For the case of FDD, the requirement is to a paired spectrum to be available. In this case TDD takes lead over FDD .
What is FDD and how does it work?
FDD requires two separate wireless communications channels on separate frequencies, one for transmit and the other for received data. FDD is used in the following wireless systems: Microwave (MW) Links Millimeter Wave (MMW) links Some 4G/LTE networks (some use TDD) Wireless systems need two separate frequency bands or channels.
Should you choose FDD or TDD for your business?
Existing industry standards and spectrum regulation rules will often impose which choice of FDD or TDD is used. TDD appears often to be the better overall choice, but FDD is far more widely implemented because of prior frequency spectrum assignments and earlier technologies. FDD will continue to dominate the cellular business for now.
What is the spectral efficiency of TDD and FDD?
The spectral efficiency of TDD is better than FDD. It is clear that TDD uses unpaired spectrum, i.e., it uses one frequency while FDD uses a. paired spectrum ,i.e., two frequencies. Therefore, the spectral efficiency of TDD is better than FDD.