公开(公告)号：US20030165132A1

公开(公告)日：2003-09-04

申请号：US10377453

申请日：2003-02-28

申请人： BENO CORPORATION

发明人： Lin Che-Li ,  Chen Sheng-Jie

IPC分类号： H04B007/216

CPC分类号： H04B1/70755 ,  H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712

摘要： This present invention is a system and method to adjust a searcher threshold parameter of a RAKE receiver. The adjusting system includes a searcher, a power estimator, and a parameter control apparatus. When the searcher finds and acquires a new path signal, the power estimator will estimate the power of the new path signal and that of the other path signals. The parameter control apparatus will calculate and monitor the power ratio corresponding to the new path signal. If the power ratio remains smaller than a predetermined power ratio parameter for a first predetermined times, the parameter control apparatus will increase the value of the threshold parameter. If the power ratio remains unchanged for a second predetermined times, the parameter control apparatus will lower the value of the threshold parameter. After that, the searcher will acquire the path signals among the multipath signal being searched in accordance with the adjusted threshold parameter. With this adjusted threshold parameter, the present invention can improve the sensitivity of the searcher, acquire the correct path signals in various environments, and provide the correct position of the path signal to the RAKE receiver.

摘要翻译： 本发明是一种调整RAKE接收机的搜索者阈值参数的系统和方法。 调整系统包括搜索器，功率估计器和参数控制装置。 当搜索者发现并获取新的路径信号时，功率估计器将估计新路径信号的功率和其他路径信号的功率。 参数控制装置将计算并监视与新路径信号对应的功率比。 如果第一预定次数的功率比保持小于预定功率比参数，则参数控制装置将增加阈值参数的值。 如果功率比在第二预定时间内保持不变，则参数控制装置将降低阈值参数的值。 之后，搜索器将根据调整后的阈值参数获得被搜索的多径信号之间的路径信号。 利用该调整后的阈值参数，本发明可以提高搜索者的灵敏度，在各种环境中获取正确的路径信号，并将路径信号的正确位置提供给RAKE接收机。