Patent ID: 7352778
Filing Date: 2008-04-01
Classification: H04J,H04L

Abstract:
1. A method of synchronizing an incoming signal, said method comprising: extracting a real part and an imaginary part of the incoming signal and a real part and an imaginary part of a sequence of at least one known coefficient; extracting a sign for each of the extracted real part and imaginary part of the incoming signal, and the extracted real part and imaginary part of the sequence of at least one coefficient; correlating said extracted sign of the extracted real part and imaginary part of the incoming signal and said extracted sign of the real part and imaginary part of the sequence of at least one coefficient to obtain a correlated signal; selecting said correlated signal when said correlated signal matches a given criterion; and synchronizing said incoming signal with said at least one known coefficient using said selected correlated signal wherein said extracting a sign comprises applying a signum function defined as sgn (f)=1 when f≧0 and sgn (f)=−1 when f<0.