公开(公告)号：US06970499B2

公开(公告)日：2005-11-29

申请号：US09871276

申请日：2001-05-30

申请人： Sundar Raman

发明人： Sundar Raman

IPC分类号： H04B1/7085 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/707

CPC分类号： H04B1/7085 ,  H04B1/7115 ,  H04B1/7117

摘要： A rake receiver tracks a component of a multipath information signal transmitted over a communication network. The rake receiver aligns and synchronized the component with a locally generated replica of the code sequence that was originally used to spread the information signal at the transmitter side. The rake receiver derives an early de-spread signal using an early shifted version of the replica of the code sequence. The replica is early shifted by a variable delay. The rake receiver also derives a late shifted de-spread signal using a late shifted version of the replica of the code sequence. The replica is late shifted by the same variable delay. The variable delay may be chosen arbitrarily or among a selection of predetermined values. The predetermined values may be selected so that the tracking process is optimized.

摘要翻译： 雷达接收器跟踪通过通信网络发送的多径信息信号的分量。 瑞克接收机将组件与本地生成的原始用于在发射机侧扩展信息信号的代码序列的副本对齐并同步。 耙式接收器使用代码序列的副本的早期移位版本导出早期的解扩信号。 复制品早期移动了一个可变的延迟。 耙式接收机还使用代码序列的副本的后期移位版本导出迟延移位的解扩信号。 复制品被延迟移动相同的可变延迟。 可变延迟可以任意选择或选择预定值。 可以选择预定值，使得跟踪处理被优化。