Patent ID: 7583764
Filing Date: 2009-09-01
Classification: H04L

Abstract:
1. A method of packet detection within a wireless communications network, the method comprising the steps of: providing a plurality of reference signals, a first of which corresponds to desired packets, and the remainder of which correspond to undesired packets or interference; providing a plurality of cross-correlation constructs from a number of cross-correlators, said plurality of cross-correlation constructs corresponding, respectively, to the plurality of reference signals, each adapted to correlate an incoming signal to a plurality of repetitions of its respective reference signal, wherein a plurality of subsequent repetitions of the reference signal will be phase offset with an initial repetition of the first reference signal; providing an analysis construct adapted to compare output from each cross-correlation construct with other outputs from other cross-correlation constructs and with a threshold value; providing incoming signals to the plurality of cross-correlation constructs; performing cross-correlation on the incoming signals; utilizing the analysis construct to determine a desired incoming signal that corresponds to desired packets; and detecting packets from the desired incoming signal.