uard band. In FR1, if multiple numerologies are multiplexed over the same OFDM symbol and the BS channel bandwidth is greater than 50 MHz, then the guard band that is inserted adjacent to 15 kHz SCS is the same as the guard band defined for 30 kHz SCS for the same BS channel bandwidth. In FR2, if multiple numerologies are multiplexed over the same OFDM symbol Table 5.2: Minimum guard band (kHz) for FR1 and FR2 [5]. Subcarrier Bandwidth (MHz) Spacing (kHz) 242.5 312.5 382.5 452.5 522.5 592.5 552.5 692.5 215,560 662 Chapter 5 and the BS channel bandwidth is larger than 200 MHz, then the guard band inserted adja- cent to 60 kHz SCS is the same as the guard band defined for 120 kHz SCS for the same BS channel bandwidth [5]. For each BS channel bandwidth and each numerology, the BS transmission bandwidth configuration is required to satisfy the minimum guard band requirement. The common resource blocks (see Section 3.7.1) are specified for each numerology and the starting point of the associated transmission bandwidth configuration on the common resource block grid for a given channel bandwidth is indicated by an offset to reference point A in the unit of the numerology. For each numerology, all UE transmission bandwidth configurations that are indicated to the UEs by the serving gNB through higher layer parameter carrierBandwidth must be located within the BS transmission bandwidth configuration [5]. In carrier aggregation scenarios, the transmission bandwidth configuration is defined per component carrier. An aggregated BS channel bandwidth and guard bands are defined for intra-band contiguous carrier aggregation. The aggregated BS channel bandwidth (BWchannel_CA) is defined as BW channel_CA = fedge-high -fedge-low (MHz). As shown Fig. 5.3, the lower bandwidth edge fedge-low and the upper bandwidth edge fedge-high of the aggregated BS channel bandwidth are used as frequency reference points for transmitter and receiver requirements, which are defined as fedge-low = fc-low - foffset-low Aggregated BS channel bandwidt