ng Table 3-2 Example of 5G O-RAN fronthaul eCPRI IQ bandwidths-low-end. RF Occupied Uncompressed IQ 9b/16b Modulation #Antenna layer bandwidth (OBW) bandwidth compressed compressed Consumer 2-layer DL, 1- 40 MHz 2.3 Gbps DL 1.32 Gbps DL 427 Mbps DL indoor layer UL 1.2 Gbps UL 0.66 Gbps UL Consumer 4-layer DL, 2. 4- 100 MHz 11.72 Gbps DL 6.6 Gbps DL 2.2 Gbps DL layer UL 5.86-11.72 Gbps UL 3.29-6.6 Gbps Outdoor 8-layer DL, 4- 100 MHz 23.44 Gbps DL 13.2 Gbps DL 4.4 Gbps DL layer UL 11.72 Gbps UL 6.6 Gbps UL OBW, Occupied bandwidth; DL, Downlink; UL; Uplink. Table 3-3 Example of 5G O-RAN fronthaul eCPRI IQ bandwidths-high-end. MU-MIMO RF Bandwidth Uncompressed IQ 9b/16b 12b/16b configuration (IBW) bandwidth Compressed compressed 16RT 8 layer DL, 4 layer UL 100 MHz 23.44 Gbps DL 13.7 Gbps DL 18 Gbps DL 11.72 Gbps UL 6.8 Gbps UL 9 Gbps DL 32RT 8 layer DL, 8 layer UL 100 MHz 23.44 Gbps DL 13.7 Gbps DL 18 Gbps DL 23.44 Gbps UL 13.7 Gbps UL 18 Gbps DL 32RT 8 layer DL, 8 layer UL 200 MHz 46.88 Gbps DL 27.4 Gbps DL 36 Gbps DL 46.88 Gbps UL 27.4 Gbps UL 36 Gbps DL 64RT 8 layer DL, 8 layer UL 200 MHz 46.88 Gbps DL 27.4 Gbps DL 36 Gbps DL 46.88 Gbps UL 27.4 Gbps UL 36 Gbps DL DL, Downlink; IBW, Instantaneous bandwidth; RT, real time; UL; Uplink. Note: These tables assume 14 occupied symbols (all layers occupied) which is unrealistic typically, a subset of the symbols is used for Physical Downlink Control Channel (PDCCH) and other "overhead." These tables exclude overheads associated with (Ethernet) packetization of imaginary and real (IQ) sample data as well as signaling overhead of beamforming information. A 10% margin is typically assumed to accommodate these components. 4G bandwidth examples Like 5G, 4G fronthaul bandwidth can be estimated by calculating the aggregate number of (frequency domain occupied) IQ samples that are carried over the fronthaul link. This is defined by the air interface bandwidth and number of antennas (RU Type A) or layers (RU type B) carried. 4G subcarrier bandwidth is defined to 15KHz which corres