| 摘要 |
The invention concerns a method and a device for recuperating a digital signal carrier. The current sample received signal r(n) of rank (n) is phase locked (1001), by being corrected on the basis of an estimated parasite phase value phi (n), to generate a corrected signal u(n) = r(n)exp(-j phi (n)), the corrected signal u(n) is phase-corrected (1002) for the current sample to generate an estimated corrected signal (v(n) = u(n).exp (-j epsilon (n)), a better estimation of the current symbol, which is subjected (1003) -o a non-linear decision generating a current estimated decided symbol dv(n)=DD(v(n)). A phase detection (1004) between u(n) and dv(n) generates an phase error signal epsilon (n) subjected to an adaptive whitening processing (1005) generating an estimated phase error signal epsilon (n), which enables the phase correction step (1002) and the computation (1006) on the basis of epsilon (n) the estimated parasite phase value phi (n + 1) for the following sample to ensure phase locking (1001). The invention is useful for receiving digital signals, in particular of the MAQ-M type.
|
