适用于无线传感器网络的低复杂度非相干OQPSK接收机  

Low-complexity Noncoherent Detection Scheme for OQPSK Receivers in Wireless Sensor Networks

作　　者：常莉莉 王喜月 张萌 张高远 Chang Lili;Wang Xiyue;Zhang Meng;Zhang Gaoyuan(School of Information Engineering,Henan University of Science and Technology,Luoyang Henan 471023,China)

机构地区：[1]河南科技大学信息工程学院,河南洛阳471023

出　　处：《山西电子技术》2019年第2期48-50,共3页Shanxi Electronic Technology

基　　金：河南科技大学大学生研究训练计划(SRTP)项目(2018084)

摘　　要：提出一种适用于无线传感器网络中OQPSK信号的低复杂度非相干接收机。首先,接收机对接收到的前导码进行处理,获取频率偏移估计值;其次,根据频偏影响估计值对数据接收值进行补偿,以供检测判决使用;最后,借助补偿后的数据接收值对物理层数据服务单元进行非相干检测判决。仿真结果表明,本文提出的低复杂度接收机基本不降低检测性能,但实现复杂度却得到一定程度降低。In this paper,it proposes a noncoherent detection scheme for Offset Quadrature Phase Shift Keying(OQPSK)signals in Wireless Sensor Networks(WSNs).First,the receiver processes the received preamble chip samples and acquires frequency offset effect(CFOE)information.Secondly,the CFOE in the information chip sample is compensated.Finally,the incoherent detection decision of the physical layer data service unit is carried out with the compensated data receiving value.Analysis and simulation results demonstrate that the proposed scheme has the characteristics of low computational complexity and high reliability.

关 键 词：IEEE802.15.4 物理层 复基带 OQPSK信号 非相干检测 

分 类 号：TN911.3[电子电信—通信与信息系统]