Patent ID: 7535978

Claim:
A method for accurate signal detection by a receiver section in a wireless environment, comprising: receiving a radio frequency (RF) signal; converting the RF signal into a down converted baseband signal; performing a periodic pattern detection on the down converted baseband signal to produce a normalized detected periodic signal, wherein the performing the periodic pattern detection comprises: match filtering the down converted baseband signal to produce matched filtered signal, wherein coefficients of the match filtering correspond to a desired waveform of the down converted baseband signal; convolving the matched filtered signal with the matched filtered signal to produce a squared absolute value of the matched filtered signal; convolving the down converted baseband signal with the down converted baseband signal to produce a squared absolute value of the baseband signal; and comparing the squared absolute value of the matched filtered signal with the squared absolute value of the baseband signal to produce the normalized detected periodic signal; comparing the normalized detected periodic signal with a set of thresholds; and when the normalized detected periodic signal compares favorably with the set of thresholds, indicating that the down converted baseband signal is valid.