US 2003/0142639 A1 · Buffer-based GPS and CDMA pilot searcher

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.

Claims44

Dependent claims

A method of processing a received signal in a wireless communication system, comprising:

receiving input samples for the received signal;
storing the input samples to a sample buffer;
retrieving samples from the sample buffer in a time division multiplexed manner with the storing of the input samples;
and
processing the retrieved samples in accordance with a particular processing scheme.

2 more elements

Dependencies are inferred from the claim text.

Buffer-based GPS and CDMA pilot searcher

Life of this patent

Buffer-based GPS and CDMA pilot searcher

Life of this patent

Abstract

Claims44