基于交织多址的密集射频识别系统检测方案  

An IDMA-based detection scheme for dense RFID networks

作　　者：沈伟杰[1] 周小林[1] 屠艳菊[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《太赫兹科学与电子信息学报》2013年第5期753-756,774,共5页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家高科技研究发展技术资助项目("863")(2011AA100701)

摘　　要：为降低密集射频识别技术（RFID）网络在多读卡器、多标签环境中的冲突并提高网络容量，提出一种新的多读卡器联合检测方案。该方案将 RFID读卡器密集排列，并应用交织多址技术，使得处于多个读卡器覆盖范围内的标签之间的干扰能够得到解析。这使得读卡器间的联合检测与分集合并成为可能，从而达到更高的信道复用率和网络容量。计算机仿真结果表明在密集 RFID环境中该系统可以在同等或更好误码率条件下实现2-6倍的信道复用率。This paper proposes a novel multi-reader joint detection scheme for dense Radio Frequency Identification（RFID） networks to reduce interference among multiple readers and tags and improve network capacity. By deploying RFID reader in high density and applying the Interleave Division Multiple Access（IDMA） scheme, signals from multiple tags can be resolved. This allows joint detection and diversity combining among different readers , resulting in better channel reuse. Through computer simulations,it is shown that the proposed system can achieve channel multiplexing by around 2-6 times with equal or better BER in dense RFID environment.

关 键 词：射频识别技术 交织多址 针孔信道 联合检测 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术]