Various aspects described herein relate to determining a configuration of reference signal (RS) resources in wireless communications. A scheduling grant of resources can be received from an access point, wherein the scheduling grant indicates one or more parameters related to transmission locations of one or more RSs. RS resource locations can be determined for the one or more RSs based at least in part on the one or more parameters. The one or more RSs can be received over the RS resource locations allowing for decimation of the RSs in time and/or frequency.