Analysis of a multi-element multi-user receiver for a shallow water acoustic network (SWAN) based on recursive successive interference cancellation (RSIC) technique

A novel technique based on recursive successive interference cancellation (RSIC) is proposed for cancelling intersymbol interference (ISI) and multiple access interference (MAI), which adversely affect the performance of shallow water acoustic networks (SWAN). Conventional structures employing decision feedback equalisation (DFE) are known to be effective for intersymbol interference reduction. However, if there are one or more interfering users, the DFE performs inadequately in extracting the useful signal for the weaker user. The performance is further degraded due to power control inefficiency. The simulation results presented in this paper demonstrate the ability of the RSIC structure in mitigating the effect of MAI, ISI and power control inefficiency