On the Application of BAC-NOMA to 6G umMTC
On the Application of BAC-NOMA to 6G umMTC
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DOI：
10.1109/lcomm.2021.3077219
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发表时间：
2021-08-01
期刊：
影响因子：
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通讯作者：
Poor, H. Vincent
中科院分区：
文献类型：
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作者：
Ding, Zhiguo;Poor, H. Vincent
本文研究了反向散射通信（BackCom）辅助非正交多址接入（BAC-NOMA）在第六代（6 G）超大规模机器类型通信（umMTC）中的应用。特别地，所提出的BAC-NOMA传输方案可以实现上行链路和下行链路用户之间的同时能量和频谱协作，这对于支持umMTC中的大规模连接和严格的能量约束是重要的。此外，资源分配问题，以最大限度地提高上行链路的吞吐量和抑制下行链路和上行链路传输之间的干扰被制定为一个优化问题，并获得相应的最优资源分配策略。计算机模拟证明了BAC-NOMA的上级性能。
This letter studies the application of backscatter communications (BackCom) assisted non-orthogonal multiple access (BAC-NOMA) to the envisioned sixth-generation (6G) ultra-massive machine type communications (umMTC). In particular, the proposed BAC-NOMA transmission scheme can realize simultaneous energy and spectrum cooperation between uplink and downlink users, which is important to support massive connectivity and stringent energy constraints in umMTC. Furthermore, a resource allocation problem for maximizing the uplink throughput and suppressing the interference between downlink and uplink transmission is formulated as an optimization problem and the corresponding optimal resource allocation policy is obtained. Computer simulations are provided to demonstrate the superior performance of BAC-NOMA.