一种三维调制信号的MUSIC解调方法  

Demodulation of three-dimensional modulated signal based on MUSIC algorithm

作　　者：张俊博[1] 陈晓光[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《信息与电子工程》2012年第6期713-718,共6页information and electronic engineering

摘　　要：根据三维调制信号的特性,提出了一种三维调制信号的多重信号分类(MUSIC)解调方法,通过搜索接收信号的空间谱,来估计其极化辅助角与极化相位差等信息,从而恢复出基带信号。理论分析与仿真实验结果均表明,所提出的方法能够对三维极化幅度正交调制(PQAM)信号进行有效的接收,不仅具有很高的分辨率和精确度,而且在低信噪比条件下,可以获得更低的误码率和估计误差。Based on the characteristics of three-dimensional modulated signal,a novel approach for the demodulation of three-dimensional modulated signal by Multiple Signal Classification（MUSIC） algorithm is presented.By searching the space spectrum of the received signal,the Auxiliary Polarization Angle and Polarization Phase Difference are estimated;therefore,the base band signal is recovered.Both the analysis and the simulation results show that the proposed method can effectively receive the three-dimensional Polarization Quadrature Amplitude Modulation signal with high resolution and high accuracy,and with lower Bit Error Rate and estimation error under the condition of low SNR.

关 键 词：DOA估计 MUSIC算法 矢量天线 三维调制解调器 

分 类 号：TN911.3[电子电信—通信与信息系统]