特征结构法在多目标OFDM系统信号分辨中的应用

The Apply of Eigenvalue-construct Method in Signal Distinguish of Multi-objects OFDM System

本文分析了多径环境下 OFDM的信号特征 ,提出利用 OFDM的帧同步信息作为条件 ,应用特征结构法 (即 ESPRIT及 MUSIC算法 )和伪数据相关矩阵方法估计信号的波达方向 ,进行多目标信号分辨。理论分析和计算机仿真实验均表明了这种方法在 OFDM系统目标识别。

This paper analyzes the characteristic of OFDM's multi- path environment, proposes the method of distinguishing multi- objects signal on the basis of information of frame synchronization of OFDM,eigenvalue- construct method such as ESPRIT and MUSIC have been used joining with pseu- data correlative matrix method to estimate signal s DOA, thus could be used in subject of object identify.The following theoretical analysis and computer simulations help confirm its effectiveness in multi- objects identify and signal distinguish in OFDM system.