有源RFID测试系统中低复杂度多读写器检测方法  

Low complexity multireader detection for active RFID test systems

作　　者：张光山[1] 李墩泰 张一民[1] 

机构地区：[1]中国电子科技集团公司第四十一研究所,青岛266555

出　　处：《国外电子测量技术》2016年第6期24-26,共3页Foreign Electronic Measurement Technology

基　　金：电子测试技术国防科技重点实验室基金资助项目(9140C120201150C12003)

摘　　要：针对采用快跳频模式的有源RFID测试系统,提出了一种用于多读写器测试的低复杂度非相干最大似然检测算法。该算法首先基于期望元素选择方式解跳出每读写器的时频矩阵图样并采用最大行原理进行预检测,然后对预检测的数据重映射及跳频地址编码,最后采用子空间最大似然检测算法恢复出读写器信号。该算法在复杂度与性能取得了很好的折衷,具有很好的实用价值。计算机仿真验证了本文研究方法的有效性。A low complexity noncoherent maximum likelihood multi-reader detection algorithm for active radio frequency identification（RFID）test system using fast frequency hopping pattern was proposed.Firstly,the time-frequency（TF）matrix pattern of every reader was calculated based on expectation element selection mode.By means of exploiting the majority row of TF matrix of the desired reader was used for pre-detection.Then these data was re-mapping and coding.Finally it used subspace maximum likelihood detection algorithm to recover the reader signal.The algorithm complexity and performance achieved a good compromise with good practical value.Computer simulation verified the validity of the proposed algorithm.

关 键 词：RFID 读写器 非相干 最大似然 

分 类 号：TN42[电子电信—微电子学与固体电子学]