Spread-spectrum channel searcher and method for accelerating searching in a CDMA receiver

摘要

A wideband CDMA searcher and method accelerate searching for signal paths of a spread-spectrum signal. I and Q components of a received signal may be sampled at approximately once per chip and summed over one or more symbols to determine a measured channel value at a specific delay. The delay between sequentially checked paths may be one chip or less. A channel value may be estimated for each delay of the spreading code based in the measured channel values. A signal path may be selected based on the channel value for use in subsequent signal tracking.