A Spectrum Sensing Scheme Based On Second-Order Variable Step Energy Detection For Detecting 3bit Passive Wireless Rfid Tag Antenna

Today, in order to overcome the low flexibility and low openness of traditional hardware communication systems, software-based software radio platforms have emerged. In order to more flexibly test the design of 3-bit tag passive wireless RFID strain patch antenna, this paper chooses to use energy detection algorithm on USRP to monitor the change of its resonant frequency. Second-order variable step detection is proposed to balance the sampling resolution and time cost, making spectrum sensing more intelligent. Good experimental results have been obtained, which provides a way to broaden the scope of application and reduce costs.