1. A method for mitigating interference in a wireless communication system, the method comprising: receiving a signal transmitted from a mobile station; subtracting a target signal within a target bandwidth (BW) from the received signal to obtain a resultant signal, wherein the target signal is constructed by estimating a target channel and target symbols from the received signal; determining a subspace blind interference sensing (BIS) BW by extending resource blocks (RBs) prior to a starting RB and after an ending RB of the target bandwidth using energy detection in each RB; determining a set of candidate interfering BWs in the subspace BIS BW by determining the number of interferers in each RB in the subspace BIS BW; and determining a set of candidate interfering DeModulation Reference Signal (DMRS) sequences based on the set of candidate interfering BWs by performing DMRS detection for each candidate interfering BW.