Virtual User Pairing Non-Orthogonal Multiple Access in Downlink Coordinated Multipoint Transmission
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In this paper, joint transmission coordinated multipoint (JT-CoMP) is exploited by using virtual user pairing non-orthogonal multiple access (VP-NOMA), termed as JT-CoMP VP-NOMA. The technique combines both VP-NOMA for enhancing ergodic sum capacity (ESC) and JT-CoMP for inter-cell interference mitigation. To show the performance gains, ESC of a three-cell scenario is analyzed as a key performance metric. The analytical and simulation results of JT-CoMP VP-NOMA are compared with orthogonal multiple access (OMA), non-orthogonal multiple access (NOMA), and VP-NOMA. It is shown that the proposed JT-CoMP VP-NOMA outperforms the other schemes in the viewpoint of ESC.
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Non-Orthogonal Multiple Access with Spatial Modulation in Downlink Coordinated Multipoint Transmission
JT-COMP NOMA-SM achieves the same cell-center capacity as JT-COMP VP-NOMA but higher cell-edge capacity and ergodic sum capacity than NOMA or VP-NOMA under imperfect SIC and CSI.
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