The development of 5G system provides a unique opportunity to implement a unified wireless transmission platform that can simultaneous deliver unicast, multicast and broadcast services using the same spectrum and the same infrastructure. This can be achieved by developing a more capable point-to-multipoint transmission (PTM) system component, also called 5G Multimedia Broadcast Multicast Services (5G-MBMS). A properly designed 5G-MBMS could achieve the convergence of terrestrial mobile broadband and TV broadcasting systems.By inherently allowing dynamic spectrum allocation among different types of services, this converged system could offer significant higher spectrum utilization. In this paper, the power-based non-orthogonal multiplexing (P-NOM) technology is proposed in addition to the existing orthogonal time-division-multiplexing (TDM) scheme. Significant capacity gains could be achieved by using P-NOM in a 5G-MBMS system for delivering different types of broadcast services, and for delivering mixed unicast and broadcast services. The capacity benefits of a 5G-MBMS with P-NOM is demonstrated by both theoretical analysis and computer simulations. A key finding is that using a two-layer P-NOM can essentially deliver a broadcast service on top of a unicast network, each achieving nearly full capacity. Next, a complexity analysis will reveal that implementing P-NOM in a 5G-MBMS system does not require significant additional complexity at consumer devices. Finally, it will be shown that, different from the non-orthogonal-multiple-access (NOMA) technologies, using P-NOM in 5G-MBMS system requires little or no change to the existing radio resource allocation mechanisms in LTE and 5G, when one power layer is used for broadcast services delivery.

中文翻译：

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在5G-MBMS中使用非正交复用实现高频谱效率的宽带-广播融合

5G 系统的发展为实现统一的无线传输平台提供了独特的机会，该平台可以使用相同的频谱和相同的基础设施同时提供单播、组播和广播服务。这可以通过开发功能更强大的点对多点传输 (PTM) 系统组件来实现，也称为 5G 多媒体广播多播服务 (5G-MBMS)。设计合理的 5G-MBMS 可以实现地面移动宽带和电视广播系统的融合。通过固有地允许不同类型服务之间的动态频谱分配，这种融合系统可以提供更高的频谱利用率。在本文中，除了现有的正交时分复用（TDM）方案之外，还提出了基于功率的非正交复用（P-NOM）技术。通过在 5G-MBMS 系统中使用 P-NOM 来提供不同类型的广播服务，以及提供混合单播和广播服务，可以实现显着的容量增益。理论分析和计算机模拟都证明了具有 P-NOM 的 5G-MBMS 的容量优势。一个关键发现是，使用两层 P-NOM 本质上可以在单播网络之上提供广播服务，每个网络都可以实现几乎全部容量。接下来，复杂性分析将揭示在 5G-MBMS 系统中实施 P-NOM 不需要在消费设备上显着增加复杂性。最后，将表明，与非正交多址 (NOMA) 技术不同，在 5G-MBMS 系统中使用 P-NOM 几乎不需要或不需要改变 LTE 和 5G 中现有的无线电资源分配机制，