A Low Complexity Ds/cdma Acquisition Technique for Large Frequency Offsets

This paper discusses a code acquisition technique, for use in spread-spectrum communication system with large frequency offsets, where the frequency offset is similar to the symbol rate. This is the situation typically in satellite communications systems. The technique uses a very efficient method of performing the correlation where the frequency and time space can be searched with very little performance loss. This means a low complexity, high performance solution to the problem of code (time) acquisition with frequency offset can be achieved.