ology supported by NR. Physical channels and 2n 15 kHz Frequency range CP duration reference signals Normal Normal Normal, extended Normal Normal Only SS/PBCH 38.211). The common waveform based on CP-OFDM simplifies system design and provides better co-existence for downlink and uplink transmissions in dynamic TDD systems; see Section 3.5.3 for a description of dynamic TDD for NR. Additionally, for coverage-limited scenarios in the uplink, Release-15 NR specifies DFT-s-OFDM with transmission of a single MIMO layer. The DFT-s-OFDM waveform has lower peak to average power ratio (PAPR) properties compared with CP-OFDM and, therefore, provides better UE power efficiency for uplink transmission. Compared with LTE, NR is expected to offer more flexibility in supporting different deployment scenarios and carrier frequencies. In particular for Release-15, two frequency ranges denoted as FR1 (corresponding to carrier frequencies up to 7.125 GHz) (3GPP TS 38.101-1) and FR2 (corresponding to millimeter wave carrier frequencies up to 52.6 GHz) (3GPP TS 38.101-2) are introduced for NR operation. To support such a wide spectrum range, multiple numerologies - defined conveniently by their subcarrier spacing (SCS) - are defined. The actual SCS for NR is determined as 2H . 15 kHz, = 0,1, ,4, where the scaling factor 2H ensures alignment of slots and symbols in the time domain, which is important to efficiently enable TDD networks. In order to maintain similar overhead, the CP duration in NR is scaled down by a factor of 2H. The choice of the scaling parameter M depends on several factors such as the deployment scenario, frequency range, radio frequency impairments, the type of service, etc. In particular, the narrower subcarrier spacing of 15 and 30 kHz, corresponding to scaling parameter = 0 and = 1, respectively, can be used in FR1 to accommodate larger delay spread channels inherent to the deployments with larger cell sizes. Numerologies with the wider subcarrier spacing of 60 and 120 kHz, corresponding to scaling parameter M 