Study on the ALOHA anti-collision algorithm based on optimized theory for RFID system

The Reader collision problem occurs when the signal received from different tag at the same time.Anti-collision algorithm can be adopted to eliminate data collision.The common anti-collision algorithm is studied in this paper such as P-ALOHA,F-ALOHA and S-ALOHA,a novel anti-collision based on optimization theory(O-ALOHA) is also proposed.The simulation results illustrate that ALOHA anti-collision algorithm based on optimization theory can get apparent advantage.The performance of the RFID system can be improved by the optimized transfer slot with high throughput and low error rate.