关键词: 无线射频识别（RFID）, 防碰撞, 捕获效应, 反馈

Abstract:  It proposes a RFID anti-collision algorithm coping with capture effect which is based on feedback mechanism （CEFB）. CEFB is divided into three phases： the packet phase, the fractal dimension identification phase and the feedback recognition phase. CEFB can solve the problem of excessive collisions effectively at the early stage of recognition. Adopting the fractal dimension identification algorithm, CEFB can speed up the processing of the collision node and develop reading speed. Meanwhile, CEFB can avoid tags misreading influenced by the capture effect and channel interference. Theoretical analysis and simulation results show that CEFB significantly outperforms other existing anti-collision algorithms.

Key words: Radio Frequency Identification Device（RFID）, anti-collision, capture effect, feedback