Various embodiments of a method, system and computer program product for correcting distortions in a multimedia content comprising a set of temporal images are disclosed. In an aspect, a method for wireless communication is provided which includes receiving a signal associated with a downlink control channel, the signal including information specific to a user equipment ; and selecting, based on the information, a UE-specific reference signal pattern from a plurality of UE-specific RS patterns. Using estimates prepared based on such an impairment compensation sequence, individual phase intervals may be grouped according to similarity of apparent aggregate effect of the impairments thereon without identification of individual impairments active in the particular phases.