| 摘要 |
The invention relates to a threshold detector for a receiver of a system for transmitting digital signals in a transmission channel, especially to mobile units, comprising means (21) for calculating a set of coefficients fn (24) belonging to the group containing, on the one hand, a set of coefficients cn (24) of correlation between a first series of digital samples received xn by the said receiver and a second series of digital samples with reference Pn known to the said receiver, for searching for the synchronisation of the said system, and, on the other hand <IMAGE> of an estimate of the pulse response of the said transmission channel, when the said system is already synchronised, and moreover comprising means (25) for calculating a decision variable A such that: <IMAGE> where L and N are two predetermined whole numbers. The invention finds numerous applications in mobile radio systems, for example for acquiring synchronisation in DS-CDMA systems or optimisation of the estimate of the transmission channel. <IMAGE> |
