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In this paper, we propose a resource allocation algorithm for V2Xcommunications based on Sparse Code Multiple Access(SCMA). By analyzing theinterference model in the V2X scenario, we formulate the problem which dealswith resource allocation to maximize the system throughput. A graph color-baseduser cluster algorithm combined with resource allocation algorithm based onboth result of clustering and SINR is presented to solve the problem. Thesimulation results indicate that the throughput performance of system based onSCMA is superior to which based on OFDMA, and the proposed algorithm canimprove the system throughput and the number of access users.

Resource Allocation Algorithm for V2X communications based on SCMA