Abstract
In this letter, we propose a new UHF RFID channel coding method, which improves the reliability of the system by using the excellent error correcting performance of the convolutional code. We introduce the coding principle of convolutional code, and compare with the cyclic codes used in the past. Finally, we analyze the error correcting performance of convolutional codes. The analysis results show that the results show that the transmission rate of the system is guaranteed, and the bit error rate can be reduced by 2.561%.
Highlights
UHF RFID tags are working in the range of 860~960MHz frequency band
In order to guarantee the reliability of information transmission, and the convolutional codes should be considered in the RFID channel coding
The performance of convolutional code is simulated by Matlab, and the simulation results are as follows: A
Summary
UHF RFID tags are working in the range of 860~960MHz frequency band. Compared with the daily use of the high frequency radio frequency tags (its typical operating frequency is 13.56MHz), its communication distance is longer, its transmission data rate is quicker and so on. In communication, when the CRC detects the fault code, which will ask the sender to resend the data until the receiving end of the data is right. This inevitably increases the time to repeat the communication, which affects the efficiency of the RFID UHF system. When the convolutional code is sent, the decoding end of convolutional code can detect error and correct when a general error code is generated in the communication process. It will reduce the bit error rate of the receiver and the communication time
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