This article analyzes the performance of a distributed joint power/packet diversity random access scheme in the presence of energy requirements. In particular, the two main approaches separately developed in the recent years for exploiting the Interference Cancellation (IC) capabilities of modern receivers, that is, Non-Orthogonal Multiple Access (NOMA) and Packet Repetition (PR), are firstly compared and then combined by imposing a constraint on the total available power. This constraint, which is alternative to the commonly adopted one based on the maximum power allowed for a transmission, results much more practical, since it enables to better infer the energy efficiency of a scheme, be it a pure NOMA, PR or combined NOMA/PR one. Both theoretical derivations and numerical simulations are carried out to evaluate the success probability and the throughput of the considered schemes by accounting for evolved reception criteria and different fading scenarios. Furthermore, the influence of several nonidealities, including imperfect IC and packet overhead, is discussed together with the impact of the system parameters, such as the user rate, the average signal to noise ratio, and the number of slots that compose a random access frame.

中文翻译：

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能源受限的下一代网络的非协调多路访问

本文分析了在存在能量需求的情况下分布式联合功率/分组分集随机接入方案的性能。特别是，首先比较并结合了近年来分别开发的利用现代接收器的干扰消除（IC）功能的两种主要方法，即非正交多址（NOMA）和分组重复（PR）。通过对总可用功率施加约束。这种限制可以根据传输允许的最大功率来替代通常采用的限制，因此更为实用，因为它可以更好地推断方案的能源效率，无论是纯NOMA，PR还是组合式NOMA /公关一。通过考虑演进的接收标准和不同的衰落情况，进行了理论推导和数值模拟，以评估所考虑方案的成功概率和吞吐量。此外，还讨论了几种不理想的影响，包括不完善的IC和数据包开销，以及系统参数的影响，例如用户速率，平均信噪比以及组成随机访问帧的时隙数。