宽带信号DOA估计处理方法研究  

DOA estimation method for wideband signal

作　　者：闫杰[1] 周围[1,2] 杜晓雷[1] 邓琦新[1] 

机构地区：[1]重庆邮电大学移动通信重点实验室,重庆400065 [2]重庆邮电大学光电工程学院,重庆400065

出　　处：《数字通信》2012年第6期29-32,共4页Digital Communications and Networks

基　　金：重庆邮电大学研究生教育创新计划重点项目(Y201019);重庆市教委科研项目(KJ090513)

摘　　要：从频域上建立宽带阵列接收信号的模型,引出了2种宽带阵列信号处理的研究方法:非相干信号的处理方法(ISM)和相干信号子空间算法(CSM)。并利用MATLAB仿真软件,模拟远场、等功率、平稳的第三代移动通信手机信号,对2种算法性能进行对比。仿真结果表明,CSM算法相对ISM算法虽然加大了运算复杂度,但是能够更有效分辨出宽带相干信号。Direction of Arrival Estimation as the key technology of smart antenna plays an important role in the field of array signal processing.With more and more broadband signal being used,many scholars have paid attention to the DOA estima-tion of broadband signals.The authors Established the model of the broadband array receiving signal from the frequency do-main and gave two broadband array signal processing research methods：incoherent signal processing method（ISM） and co-herent signal subspace method（CSM）.Then simulated a far-field,equivalent power and stable 3G signals by MATLAB to compare the performance of these two algorithms.Simulation results show that CSM,compared to ISM,although increase the computational complexity,it can more effectively distinguish the broadband coherent signal.

关 键 词：波达方向估计 智能天线 宽带信号 非相干信号 相干信号 

分 类 号：TN911.7[电子电信—通信与信息系统]