摘要：To improve the performance of the identificationspeed and the reliability in RFID system with large intensivetags, an improved tag anti-collision algorithm based on CSMAis proposed in this paper. The proposed model adopts theprinciple of the first arrival tag occupies channel and transmitspackets in the next idle slot when the detected channel is idle,otherwise, adjusts the back-off time according to the collisiontimes. Hence, the channel conflict caused by listeningmisjudgment is eased and propagation delay is reducedefficiently. Based on the Markov chain analysis, the simulationresults show that the anti-collision algorithm proposed in thispaper has higher recognition precision than the traditionalalgorithm.
