公开(公告)号：WO2003061151A1

公开(公告)日：2003-07-24

申请号：PCT/US2002/038935

申请日：2002-12-06

Applicant: ANALOG DEVICES, INC.

Inventor： RIFAAT, Rasekh ,  GREENFIELD, Zvi ,  PRIMO, Hiam

IPC: H04B1/707

CPC classification number: H04B1/7113 ,  H04B1/7117

Abstract: A digital signal processor performs path search calculations for a Rake receiver. Despread operations are performed for multiple relative delays over a subcorrelation length by shifting either received chips or code chips for each relative delay. The result of despread operation for a relative delay is added to the result of previous despread operations of the same delay performed on prior subcorrelation lengths. These calculation are performed in response to a single instruction. By issuing multiple instructions, path search calculations are performed for the entire correlation length.

Abstract translation: 数字信号处理器对Rake接收机执行路径搜索计算。 通过针对每个相对延迟移位所接收的码片或码片，对子相关长度进行多次相对延迟的解扩操作。 对于相对延迟的解扩操作的结果与对先前的子相关长度执行的相同延迟的先前解扩操作的结果相加。 这些计算是响应于单个指令执行的。 通过发出多个指令，对整个相关长度执行路径搜索计算。

公开(公告)号：WO2003015305A1

公开(公告)日：2003-02-20

申请号：PCT/US2002/024702

申请日：2002-08-06

Applicant: ANALOG DEVICES, INC.

Inventor： RIFAAT, Rasekh ,  GREENFIELD, Zvi ,  FRIDMAN, Jose

IPC: H04B1/707

CPC classification number: H04B1/7093

Abstract: A digital signal processor performs despread decoding in wireless telephone systems. Orthogonal codes are used to combine data signals into one overall coded signal which is transmitted. The orthogonal codes are used to retrieve individual data signals from the transmitted overall coded signal. Despread instructions are included in the digital signal processor functionality.

Abstract translation: 数字信号处理器在无线电话系统中执行解扩解码。 正交码用于将数据信号组合成一个发送的总编码信号。 正交码用于从发送的总体编码信号中检索单个数据信号。 解扩指令包括在数字信号处理器功能中。