Versatile system for interference tolerant packet detection in wireless communication systems

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;
• providing a cross-correlation construct for each adjacent channel interferer
• providing a cross-correlation construct for the each adjacent channel interferer at positive and negative 5 MHz intervals from inband;
• 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.

A system performing packet detection within a wireless local area network, the system comprising:

• a plurality of reference signals, a first of which corresponds to desired packets, and the remainder of which correspond to undesired packets or interference;
• 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;
• 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;
• and
• incoming signals provided to the plurality of cross-correlation constructs.