Abstract: A method and system for reordering a plurality of DSS data packets stored in a memory is provided that utilizes a memory buffer capable of storing at least one DSS data packet. The last data packet (Pn) is located and moved to the memory buffer. The data packet (Px) that should be located at the location of the last packet (Pn) is moved to fill the space vacated. If the last data packet should be located at the location of Px, then the last but one (Pn−1) packet is located and moved to the memory buffer. The packet (Px′) that should be located at the location of Pn−1 is then moved to the location of Pn−1. The process is repeated until all the data packets are reordered.

Abstract: The present invention is a method and apparatus for detecting the presence of or acquiring a signal in a data stream, where the signal has been spread using a pseudonoise sequence. The method comprises the steps of delaying a pseudonoise sequence by a plurality of predetermined delays to produce a plurality of delayed pseudonoise sequences, combining each of the delayed pseudonoise sequences with the data stream to produce a plurality of despread data streams, and accumulating each of the despread data streams for a preselected duration to produce a plurality of coherent sums. Each of the coherent sums are accumulated for a further duration to produce a plurality of non-coherent sums. The non-coherent sums are examined to determine the most likely PN offset hypothesis.