Section: 10.2.8 OFDM baseband signal generation
Content: For an NB-IoT carrier - for which the higher layer parameter operationModeInfo indicates 'inband-DifferentPCI ' and for all NB-IoT downlink physical channels and signals except NPRS, - for which the higher layer parameter operationModeInfo indicates 'Guardband ' or 'Standalone ', - for an NB-IoT carrier for which the higher layer parameter CarrierConfigDedicated-NB or DL-CarrierConfigCommon-NB is present and no inbandCarrierInfo is present, or - for an NB-IoT carrier for which the higher layer parameters CarrierConfigDedicated-NB or DL-CarrierConfigCommon-NB is present and inbandCarrierInfo is present and the higher layers do not indicate is the same as and for all NB-IoT downlink physical channels and signals except NPRS, the time-continuous signal on antenna port in OFDM symbol in a downlink slot is defined by for where , , and is the content of resource element on antenna port . Otherwise, the time-continuous signal on antenna port in OFDM symbol , where is the OFDM symbol index from the start of the last even-numbered subframe, is defined by for where and, if resource element is used for Narrowband IoT except for NPRS, and 0 otherwise including NPRS. The quantity is the frequency location of the center of the Narrowband IoT PRB minus the frequency location of the center of the LTE signal. Only normal CP is supported for Narrowband IoT downlink in this release of the specification.