CAJ | 학술논문

结合射频识别(RFID)系统的工作特点,在给出适用于该系统的面阵多波束实现方法基础上,提出了一种防冲突算法.该算法采用平面阵列天线,通过数字多波束形成算法控制加权系数,将三维空间划分为多个波束方向,并同已有基于时分多址(TDMA)算法相结合,实现对在阅读器的识别范围内大量密集分布的标签进行快速准确识别的目的.此外,在实现多标签识别的同时,该算法还引入二次波束形成策略,以解决波束之间的重叠碰撞问题.实验表明,本算法可将识别效率提高65%以上.
결합사빈식별(RFID)계통적공작특점,재급출괄용우해계통적면진다파속실현방법기출상,제출료일충방충돌산법.해산법채용평면진렬천선,통과수자다파속형성산법공제가권계수,장삼유공간화분위다개파속방향,병동이유기우시분다지(TDMA)산법상결합,실현대재열독기적식별범위내대량밀집분포적표첨진행쾌속준학식별적목적.차외,재실현다표첨식별적동시,해산법환인입이차파속형성책략,이해결파속지간적중첩팽당문제.실험표명,본산법가장식별효솔제고65%이상.
In this paper,a radio frequency identification (RFID) anticollision algorithm was proposed based on an analysis of digital multi-beaming forming algorithm of planar array antenna. For identifying the numerous dense tags quickly and accurately in the recognition range of reader,three-dimensional spaces were divided into several subspaces by using planar array antenna and combined with the existing time division multiple access (TDMA) algorithm to avoid the tag collision in each beam. Twice digital beamforming strategy was adopted to solve the reader collision in the overlapping areas between adjacent beams. The simulation results show that the efficiency of identification can be improved more than 65%.