1. A method for wireless communications by a user equipment (UE), comprising:detecting a synchronization channel and a secondary synchronization signal (SSS) transmitted with the synchronization channel by searching for one or more synchronization channels according to a synchronization channel raster, that is not centered around a direct current (DC) tone of a system bandwidth, the synchronization channel raster having a coarser granularity than a channel raster for other channels in the system bandwidth;
receiving a reference signal for demodulation (DMRS), other than a cell-specific reference signal, wherein a sequence of the DMRS is independent of at least one of a downlink bandwidth or a location of the synchronization channel within the system bandwidth;
demodulating a physical broadcast channel (PBCH) transmitted in the synchronization channel based on at least one of the DMRS and the SSS; and
determining the system bandwidth corresponding to the downlink bandwidth based at least in part on the PBCH.