基于RFID的防冲突算法

In the RFID system, if two or more of the RFID electronic tags at the same time transmit data to reader，there will be communication conflict, data interfere with each other. In the receiver of reader, the data packets of electronic tag can not be correctly identified and create errors. The anti-collision algorithm is used to avoid the data collision resulted from the data transaction between more tags and the reader at the same time. Anti-collision technique is a key technique in the RFID system. This thesis researches anti-collision algorithms of RFID system. Based on introducing the foundation of the structure and workflow of the RFID system briefly, it stresses to discuss one of the key techniques of RFID--anti-collision algorithm, summarizes the project of anti-collision, and carries on comparing and analyzing necessarily. Then it imitates ALOHA algorithm and other algorithms which come into ALOHA algorithm, which improves identification efficiency and reduces the search range. Moreover, the performance analysis shows that the algorithm has more obvious advantages than the binary search algorithm and the dynamic binary search algorithm.