基于电控序列位移接收结构的无线网络信号定位算法

摘要

为解决当前5G无线网络中高速移动节点信号定位不准确和高稳定分布噪声(high stable distribution noise,HSDN)等特殊偏移噪声降低定位准确性的问题,提出基于电控旋转序列位移接收结构的5G无线网络信号定位算法.利用单一节点接收结构及环接收结构并采取分层方式,构建电控旋转序列位移接收结构;基于待定位信号与中央基站及各层接收节点之间的切线关系,初步估计待测信号方位;针对信号发射环境中的HSDN噪声频率漂移特性,通过信号定位差分机制,联合最优极大似然估计,构建基于差分方式的方位角精度优化机制,降低定位误差.仿真结果表明,与采取单一节点接收方式的GDAM算法及采取单层环接收方式的NUPOS-1算法相比,在HSDN噪声干扰环境下,该算法具有更低的信号定位误差.%To solve the problem of inaccurate signal positioning of moving nodes at high speed in the current 5G wireless network as well as the performance degradation resulting from high stable distribution noise (HSDN),a rotating ring control receiving structure based signal positioning algorithm for 5G wireless network was presented.The rotating ring electronic receiver structure was constructed by means of both single node receiving structure and ring receiving process.Making use of the relationship between the positioning signal and the central base station and each receiving node,the azimuth of the signal was estimated.Combining the positioning signal differential mode and maximum likelihood estimation,the difference of the improvement of precision filtering mechanism was constructed to further reduce the error in the process of positioning.Simulation results show that compared with the traditional single node receiving GDAM algorithm and single-layer ring receiving NUPOS-1 algorithm,the proposed algorithm can reduce positioning error when the signal is contaminated by HSND noise and enable more accurate positioning than the traditional algorithm.