Side konspekt 2020 / eksami kordamisküsimused
* Reference Signals used to estimate carrier offset, channel estimation,
timing synchronisation etc.
* Reference signals are transmitted during the first and fifth OFDM
symbols of each slot when the short CP is used
* Reference signals are transmitted during the first and fourth OFDM
symbols of each slot when the long CP is used
* Reference symbols are transmitted every sixth subcarrier and
staggered in both time and frequency
-subcarrier - alamsageduskanal, need 15kHz kanalid millest
pannakse kokku LTE sageduskanal
21. Selgita mõistet MIMO (Multiple Input Multiple Output)
*On mitu saatvat antenni ja mitu vastuvõtvat antenni, seega on mitu andmevoogu
samaaegselt*
*Kui mõnest antennist on levi kehvem siis saab andmevood kätte antennidest millel
on levi parem, häired tulev siin siis peegeldustest*
MIMO = smart antennas
* MIMO is Smart Antenna technology, defined as, the use of two or more unique
annaabi.ee 
