Aiming at problem of sensing tags collision in multiple input multiple output radio frequency identification（ MIMO-RFID） system

a parallelizable identification anti-collision algorithm based on underdetermined blind separation is propsoed. On the basis of fast independent component analysis（ Fast-ICA）algorithm

using the iteration method of higher order

to realize underdetermined blind source separation of collision sensing tag signals. Performance simulation of two aspects of separation performance and throughput are carried out. Experimental results show that the proposed anti-collision algorithm can quickly separate sensing tag signals.Under the condition of same number of reader antennas

the algorithm of the maximum throughput than the current blind separation tag anti-collision algorithm improved by more than 40 %.