公开(公告)号：WO2003065610A3

公开(公告)日：2003-08-07

申请号：PCT/US2003/002912

申请日：2003-01-31

Applicant: QUALCOMM INCORPORATED

Inventor： KANG, Inyup ,  PATRICK, Christopher ,  MEAGHER, Bruce, R. ,  PATEL, Shimman ,  LI, Tao ,  CHEUNG, Joseph ,  SRINAVAS, Pillappakkam ,  FOERSTER, Gregory, B. ,  VARADARAJAN, Srinivas ,  WEI, Jian

IPC: H04B1/707

Abstract: A pilot searcher for CDMA and GPS signals. In one aspect, the searcher is operated in conjunction with a sample buffer in a "real-time" or "off-line" mode. The writing/reading of samples to/from the buffer may be performed in a TDM manner via a common port, and samples may be decimated and packed prior to storing in the buffer. In another aspect, the overall search for pilots is partitioned into a number of tasks, with each task corresponding to a search over a given sample segment and based on a particular set of parameter values. The tasks may be stored in a queue and performed one at a time based on their order in the queue. Prior to performing a new task, the parameter values for that task is downloaded to a set of configuration registers. The parameters may be ordered and linked such that only new values are downloaded.