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.