Abstract: The invention relates to a method for synchronizing a radio terminal in a radio-communication network with a received signal flow comprising a predefined synchronization sequence repeated at predefined time intervals. According to the invention, the method consists in generating correlation profiles at the radio terminal by correlating a part of said signal flow with the synchronization sequence to reveal correlation peaks and accumulating as many correlation profiles as necessary, until a threshold level is reached by at least the largest correlation peak. The threshold level is updated, during the accumulation, depending on a background noise level estimated in the signal flow to dynamically determine if the synchronization sequence has been detected at the radio terminal.

Abstract: Path selection method in a CDMA receiver for the selection of the true path of a transmission channel, comprising the step of comparing the profile energy with a threshold, characterized in that the threshold is dynamically determined as a function of the mean of noise and interference paths derived from the transmission channel profile estimation.

Abstract: The invention relates to a method for synchronizing a radio terminal in a radio-communication network with a received signal flow comprising a predefined synchronization sequence repeated at predefined time intervals. According to the invention, the method consists in generating correlation profiles at the radio terminal by correlating a part of said signal flow with the synchronization sequence to reveal correlation peaks and accumulating as many correlation profiles as necessary, until a threshold level is reached by at least the largest correlation peak. The threshold level is updated, during the accumulation, depending on a background noise level estimated in the signal flow to dynamically determine if the synchronization sequence has been detected at the radio terminal.

Abstract: The invention relates to a telecommunication method, wherein: terminals communicate through a central station, uplink and downlink communications are coded with a spread spectrum sequence, and terminals have different powers. At the central station, interference cancellation is performed in order to reduce the interfering effect of the highest power signals on the detected lowest power signals. In this method, at least for some of the most powerful interfering signals, groups of symbols (TS1, TS3) of different interfering signals are time aligned when they reach the central station. Preferably, the synchronized groups of symbols are synchronously detected at the central station and are processed jointly prior to be subtracted from the signal to be detected.