%0 Journal Article
%A LIU Yan
%A ZHANG Yu
%T Radio frequency identification anti-collision algorithm based on Logistic mapping
%D 2020
%R 10.11772/j.issn.1001-9081.2019122121
%J Journal of Computer Applications
%P 2334-2339
%V 40
%N 8
%X Concerning the low tag recognition throughput caused by frame length limitation in the Dynamic Frame Slot Aloha (DFSA) algorithm, a Logistic mapping based DFSA (Logistic-DFSA) algorithm was proposed. First, the sequence generated by logistic mapping was used as the spreading code, and the spread spectrum technology was combined with the DFSA algorithm to realize the parallel recognition of multiple tags with one slot. Second, the influence of frame length, spreading code length and the number of tags on throughput in the recognition process was analyzed, and the optimal frame length and spreading code length were obtained. Finally, based on the number of remaining tags after a frame, a repeating frame algorithm with all tags recognizable was proposed. Simulation results show that compared with the DFSA algorithm, the Logistic-DFSA algorithm has reduced the total number of slots for tag recognition by 98.3% and increased the system throughout by 162%. Therefore, the Logistic-DFSA algorithm can greatly reduce the total number of slots, improve the system throughput, and effectively identify tags within the range of the reader.
%U http://www.joca.cn/EN/10.11772/j.issn.1001-9081.2019122121