移动终端定位参数联合估计方法的研究

Estimation of joint parameters for mobile terminal location

利用天线阵列对同一信源信号经过多径传输到达终端的时间时延、角度和强度进行了联合估计。首先利用训练序列估计信道特性 ,之后利用 2 D- ESPRIT算法及矩阵对角化等处理手段对多径信号的时延和角度进行了有效的估计。仿真结果证明了方法的有效性。角度和时延的联合估计在未来移动通信网络中移动终端的定位等方面均具有很好的应用前景。

In multipath propagation model, arrival angle, delay and strength received by an antenna array for same signal source are estimated. Firstly the channel characteristic is estimated by the use of the training signal, then joint parameters of multiath signal is estimated based on the 2D ESPRIT algorithm and matrix diagonalization method. The simulation illustrates that this estimation method is effective. The joint parameter estimation method is meaningful in mobile terminal location in future mobile communication networks.