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Link Performance Estimation Technique for PDMA Uplink System

Pattern division multiple access (PDMA) is a promising non-orthogonal multiple access scheme for the fifth generation mobile communication system. Link performance estimation technique is the key to ensure accurate performance evaluation of the PDMA uplink system. Although the belief propagation (BP) receiver with near-optimal performance is normally considered for PDMA uplink system, it remains a big challenge for the estimation of the link performance for the PDMA uplink system with the BP receiver. In this paper, we first propose a novel link performance estimation technique for the PDMA uplink system with the BP receiver. The performance of the BP receiver is estimated by utilizing the genie-aided interference cancellation receiver as an upper bound with a single fitting parameter. Then, we provide a simple search process of finding the fitting parameter. Finally, the simulation results show that the proposed method achieves greater link performance estimation accuracy over the conventional method in the PDMA uplink evaluation.