The combination of non-orthogonal multiple access in millimeter-wave communication called as mmWave-NOMA is capable of supporting more data streams with a larger number of users to cope up with the increasing traffic demand. In this paper, an energy-efficient scheme for downlink mmWave-NOMA systems with joint user grouping, scheduling, and optimal power allocation with the objective of energy efficiency maximization is proposed. Enhanced k-means clustering for user grouping which can handle the possible simultaneous access of network to enhance the sum throughput is proposed. Weighted sum algorithm-based scheduling where weights are calculated based on the service requirement of the users to maximize the sum rate and a proportional-based scheme of power allocation modeled as a resource allocation problem considering the beam gain and discrimination weight of each user for energy-efficient power allocation is discussed. The simulation results show that the proposed scheme is energy efficient than the conventional mmWave orthogonal multiple access systems.

中文翻译：

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毫米波-NOMA系统联合节能用户调度与功率分配方案

毫米波通信中的非正交多址组合称为mmWave-NOMA，能够支持更多数据流和更多用户，以应对不断增长的流量需求。在本文中，提出了一种具有联合用户分组、调度和优化功率分配的下行链路 mmWave-NOMA 系统的节能方案，其目标是能效最大化。提出了用于用户分组的增强k-means聚类，它可以处理可能的网络同时访问以提高总吞吐量。基于加权求和算法的调度，其中根据用户的服务需求计算权重以最大化求和率和基于比例的功率分配方案建模为资源分配问题，考虑每个用户的波束增益和能量鉴别权重- 讨论了高效的功率分配。仿真结果表明，所提出的方案比传统的毫米波正交多址系统更节能。