3GPP TS 38.101 Carrier Allocation & Spectrum Efficiency.
Carrier Config
Awaiting Spectrum Config
Advertisement
5G NR requires a minimum guard band between the edge of the channel bandwidth and the edge of the resource block. This prevents adjacent channel interference. The guard band depends on the channel bandwidth and the subcarrier spacing (SCS).
Typically ranges from 90% to 98% utilization.
Smaller guard bands require more aggressive pulse shaping / filtering.