Research on Tag Anti-collision Algorithms of RFID System under Dense Tag Environment

This paper firstly analyses the performances of several RFID anti-collision algorithms under the environment of dense tags.The performances discussed include total time consumed,system efficiency,total bits transmitted by the reader and average bits sent by each tag and so on.Then a novel improved algorithm based on ALOHA algorithms is present.The new algorithm has high system efficiency around 0.41 and less amount of data transmitted which is decreased by 50 percent at least compared with tree-based algorithms.Lastly,conclusions are made and directions of further work are given.