Kind of Interference Suppression for Cellular System Using Base-station Cooperation

Interference from other cells can be treated efficiently by base-station cooperation. A kind of interference suppression using base-station cooperation is introduced. A central base-station is chosen from all the cooperative base-stations. User signals higher than SNR threshold are demodulated using interference cancellation by each station,and residual signals are sent to the central base-station. Local residual signals are combined with those from other cooperative base-stations by the central base-station,and interference cancellation is used again. Strong signals and weak signals are efficiently distinguished by the first interference cancellation,and diversity can be induced by the combination at the central base-station,then interference cancellation is used again in order to efficiently detect weak signals,so the aim of interference suppression can be achieved at last.