Description: The first，this paper investigates the f．0rward link and retum link data encodlng
method in short range communication types A and B in ISO／IEC 1 8000-6，and deeply
analyzes encoding method and technical parameters of Bi—Phase Space(FMO)coding，
Pulse IntervaI Encoding(PIE)coding and Manchester coding．We also designed and
simulated code circuits and decode circuits of the three encoding method by FPGA
experiment platfoml． The second， We discussed the technical principle of error
control of the UHF RFID system，especially for the techn0109y of data Verification
肌d calibration，namely cyclic redundancy check that used in IS0／IEC 1 8000·6·The
circuits of CRC based on Linear Feedback Shin Register(LSFR)are analyzed行om
theonr and realization，and some means of solVing problems are put fon)Irard，then an
improved LSFR circuit to implement CRC is designed．For some require fast CRC
calculation system，we designed a noVel parallel CRC circuit by using recurslVe
fomlula．In the end，we put forw
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超高频RFID系统编解码与校验问题的研究.pdf
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