Software defined rfid

The backscatter link frequency range is 40kHz to kHz and the data rate range is 5kbps to kbps. The cutoff range for the highpass filter is 6. The optimum filter bandwidth setting can be adjusted by a software algorithm and is a function of the data clock, data rate and encoding.

The filter bandwidth must be sufficiently narrow to maximize the dynamic range of the ADC input and wide enough to preserve signal transitions and pulse widths the proper filter setting ensures reliable DSP tag signal detection. If the lowpass cutoff frequency is lower, the signal transition and time interval will be distorted beyond recognition. The setting of the highpass cutoff frequency is more qualitative than specific.

Comparing the filter outputs with a 10kHz and a 30kHz highpass setting, the signal transitions and time intervals of the 10kHz output are adequate for detecting the symbol sequence in an RFID environment, noise will be superimposed on the output signal. Using the LTC under software control provides the ability to operate at high data rates with a single interrogator or with optimum tag signal detection in a multiple or dense interrogator physical setting.

First, we discuss the potential pros and cons of the envisioned distributed scenario, where RFID transmitters and listeners are physically separated. Our implementation is fully compliant with the Gen2 standard, and represents a starting basis for developing novel versions of Listeners going beyond the current specifications, for experimental pre-standard research.

As a third contribution, we present several experiments aimed at assessing the Listener performance and illustrating its operation as a flexible Gen2 protocol analyzer. De Donno, F. Ricciato, and L. De Donno, L. Catarinucci, L. Tarricone, V. Lakafosis, and M. Don't enter email or mobile no. Vijay Kumar 01 July Write a Review. Raj Janorkar.