Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a collision between a physical uplink shared channel (PUSCH) transmission and a guard period of a sounding reference signal (SRS) transmission, wherein the SRS transmission includes a first SRS transmission and a second SRS transmission, the second SRS transmission uses a first set of one or more antenna ports of the UE, and the PUSCH transmission uses a second set of one or more antenna ports of the UE; and perform an action to mitigate the collision based at least in part on identifying the collision. Numerous other aspects are provided.