Multiuser Detection in Asynchronous Multibeam Communications
This paper deals with multi-user detection techniques in asynchronous multibeam satellite communications. The proposed solutions are based on Successive Interference Cancellation architecture (SIC) and channel decoding algorithms. The aim of these detection methods is to reduce the effect of co-channel interference due to co-frequency access, and consequently, improves the capacity of the multibeam communications systems, by improving frequency reuse. Channel estimation allows the determination of interference coefficients, which helps their effects compensation. The developed multiuser detections techniques are iterative.