A frame has duration of 10 ms which consists of 10 subframes having 1ms duration each similar to LTE technology . Each subfame can have 2μ slots. Each slot typically consists of 14 OFDM symbols.
Read moreWhat is physical layer in 5G NR?
PHY layer sits at the bottom of the 5G NR protocol stack, interfacing to MAC sublayer higher up via transport channels . It provides its services to MAC and is configured by RRC . PHY supports downlink ( gNB -to- UE ), uplink ( UE -to- gNB ) and sidelink ( UE -to- UE ) communications.
Read moreWhat is SCS in 5G NR?
5G NR Numerology – Subcarrier Spcaing (SCS)
Read moreWhat is subcarrier bandwidth in LTE?
Each subcarrier is able to carry data at a maximum rate of 15 ksps (kilosymbols per second) . This gives a 20 MHz bandwidth system a raw symbol rate of 18 Msps. In turn this is able to provide a raw data rate of 108 Mbps as each symbol using 64QAM is able to represent six bits.
Read moreWhat is DC subcarrier?
In OFDM and OFDMA PHY layers, the DC subcarrier is the subcarrier whose frequency is equal to the RF centre frequency of the transmitting station . It corresponds to frequency zero (Direct Current) if the FFT signal is not modulated.
Read moreWhat is subcarrier frequency?
A subcarrier is a secondary modulated signal frequency modulated into the main frequency (the carrier) to provide an additional channel of transmission . It allows for a single transmission to carry more than one separate signal.
Read moreWhy are there different subcarrier spacing in 5G?
Wider subcarrier spacing would provide better resistance to such increased Doppler shifts at higher frequency bands . Furthermore, 5G NR provides a flexible solution to support various applications by choosing an appropriate configuration. For example, when higher Δf is used, it results in a shorter slot duration.
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