Research And Achievement Of The Arithmetic Of RFID

Radio Frequency Identification (RFID) technology is an automatic identification technology which has been developed and maturated since 1990s. Compared with the early touched identification technology, it has many advantages, therefore it works in many fileds. But in the course of RFID development, many problems occurred and need to be soloved urgently, such as channel code , data anti-collision and security of system. Once such these problems are solved, RFID technology would be popularized in our life quickly. So it is important to solve above-mentioned problems for the RFID technology. Therefore the main content of the paper focused on the above-mentioned issue, including the coding study, channel coding , data Anti-collision and security of system.In order to select an appropriate coding method, vary coding and decoding module are setup with Matlab. Comparing with various coding methods, we can find an appropriate coding who fit into RFID system.Following, the problem of data anti-collision is studied. Based on the traditional anti-collision method, an ameliorated anti-collision method is put forward. Using this method, much superfluous information is wiped off, which could reduce the time of identification and improve the efficiency of anti-collision greatly.Furthermore, the security of system is also studied. The arithmetic of DES is analysed roundly. Simulation realization of above arithemetic are accomplished by Verilog HDL and synthesized by synnplify, which could confirm the arithemetic is valid.