Patent ID: 7940856

Claim:
A method comprising: synchronizing a substantially rectilinear signal being propagated through an unknown channel, in the presence a presence of unknown substantially rectilinear interferences, received by an array of N sensors, in which a known training sequence s(nT) is used comprising K symbols and sampled at a symbol rate T (s(nT), 0≦n≦K−1) wherein, based on observations x((n+l/p)T) over a duration of the training sequence, where p=T/Te is an integer and Te the sampling period, l is the delay of the signal, a virtual observation vector X((n+l/p)T)=[x((n+l/p)T) T , x((n+l/p)T) † ] T is defined, where † is the conjugate transpose, as well as a decision criterion or decision statistic taking into account a second-order non-circular nature of the interferences, by using first and second correlation matrices of the virtual observation vector X((n+l/p)T).