Multi-slot and multi-user joint detection scheme for CRDSA in satellite network

Abstract

A multi-slot and multi-user detection scheme is presented for the contention resolution diversity slotted ALOHA (CRDSA) in satellite networks. The scheme can effectively resolve the deadlock loop of the collided packets of J users in J slots, and can be applied to DVB-RCS2 directly with a little change on receiver. The simulation results show the throughput of the CRDSA with the proposed scheme can improve greatly when the PLR is at 0.001, and has less latency compared with the conventional CRDSA.