Patent ID: 7830949

Claim:
A communication system comprising: a wireless receiver, the wireless receiver receiving a signal including a first sequence of data values and converting the first sequence of data values into a sequence of digital data values, the wireless receiver further comprising a plurality of cross correlators that each receive the digital data values and cross correlate the digital data values with a corresponding plurality of different binary reference patterns, wherein if the first sequence of data values correlates with one of said plurality of binary reference patterns, one of said cross correlators generates a peak, and wherein each cross correlator of the plurality of cross correlators comprise a first cross correlator stage and a second cross correlator stage, wherein the second cross correlator stage comprises N binary reference pattern values and a plurality of single cycle delays, and wherein the first cross correlator stage comprises M binary reference pattern values and a plurality of N cycles delays, wherein N is a first number and M is a second number.