公开(公告)号：US20040008640A1

公开(公告)日：2004-01-15

申请号：US10067496

申请日：2002-02-04

Applicant: QuickSilver Technology, Inc.

Inventor： Ghobad Heidari ,  Kuor-Hsin Chang

IPC: H04B007/216

CPC classification number: G06F15/7867 ,  H04B1/708 ,  H04B2201/70711

Abstract: A system for implementing a searcher for use with a communication device is provided. According to one aspect of the system, the searcher includes one or more computational units which are used to perform a PN sequence generation function to generate a sequence of PN codes. The searcher further includes a number of computational units which are used to correlate received signal samples with the PN codes. As each signal sample is received by the communication device, the received signal sample is correlated with a first PN sequence in a parallel manner using the computational units. The correlation results are then accumulated. As the next signal sample is received, this newly received signal sample is similarly correlated with the next PN sequence in a parallel manner. Likewise, the correlation results are accumulated with the previous correlation results. The foregoing process is repeated until all the signal samples needed for correlation are received and correlated with sequences of PN codes. According to another aspect of the system, the a computational units are implemented using adaptive hardware resources. The number of computational units which are used to implement the correlation function is adjustable depending on, for example, the amount of available adaptive hardware resources.

Abstract translation: 提供了一种用于实现与通信设备一起使用的搜索器的系统。 根据该系统的一个方面，搜索器包括一个或多个计算单元，用于执行PN序列生成功能以产生PN码序列。 搜索器还包括多个计算单元，用于将接收到的信号采样与PN码相关联。 由于每个信号采样由通信设备接收，所以接收的信号样本使用计算单元并行地与第一PN序列相关。 然后累积相关结果。 当接收到下一个信号样本时，新接收的信号样本与下一个PN序列以并行方式类似地相关。 同样地，相关结果与先前的相关结果一起累积。 重复上述过程，直到接收到相关所需的所有信号样本并与PN码的序列相关联。 根据系统的另一方面，使用自适应硬件资源来实现计算单元。 用于实现相关函数的计算单元的数量可以根据例如可用的自适应硬件资源的量来调整。