公开(公告)号：US5383164A

公开(公告)日：1995-01-17

申请号：US74940

申请日：1993-06-10

申请人： Terrence Sejnowski ,  Shao L. Li

发明人： Terrence Sejnowski ,  Shao L. Li

IPC分类号： G06K9/62 ,  H01Q3/26 ,  H04B1/10 ,  H04B1/12 ,  G01S13/68

CPC分类号： G06K9/624 ,  H01Q3/2605 ,  H03H2021/0034 ,  H04B1/1081 ,  H04B1/126

摘要： A system for separating mixed signal sources by processing a received signal through the combination of a beamforming network and an adaptive Herault-Jutten network. The conventional Herault-Jutten network is useful for separating independent signals that have been linearly mixed, but cannot separate a mixture of several independent signals in free field conditions because of the propagation time delays between sources and sensors. The system of this invention combines planar beamforming techniques with a conventional HJ network to adaptively distinguish among signals having delays introduced by the propagation medium. A new sensor filter scheme is introduced to eliminate beamforming variation with frequency over the band of interest. The resulting system has application to adaptive interferer rejection and to acoustic and cellular communications receivers.

摘要翻译： 一种用于通过波束成形网络和自适应Hérault-Jutten网络的组合处理接收信号来分离混合信号源的系统。 常规的Hérault-Jutten网络对于分离已经线性混合的独立信号是有用的，但是由于源和传感器之间的传播时间延迟，在自由场条件下不能分离几个独立信号的混合。 本发明的系统将平面波束形成技术与常规HJ网络相结合，以自适应地区分由传播介质引入的延迟的信号。 引入了一种新的传感器滤波器方案，以消除在感兴趣的频带上的频率的波束成形变化。 所得到的系统具有适用于自适应干扰源抑制和声学和蜂窝通信接收机的应用。