On Power Minimization for Non-orthogonal Multiple Access (NOMA)
On Power Minimization for Non-orthogonal Multiple Access (NOMA)
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DOI：
10.1109/lcomm.2016.2606596
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发表时间：
2016-12-01
期刊：
影响因子：
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通讯作者：
Varbrand, Peter
中科院分区：
文献类型：
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作者：
Lei, Lei;Yuan, Di;Varbrand, Peter
本文从数学上提出了一个非正交多址系统的功率优化问题，并证明了其np -硬度。为了解决这个问题，我们首先通过松弛来确定一个凸问题。在此基础上，提出了一种高效的“先放松后调整”算法，并给出了性能评价结果。
We formulate a power optimization problem for non-orthogonal multiple access systems mathematically, and prove its NP-hardness. For tackling the problem, we first identify a convex problem by relaxation. Based on this convexity, we then propose an efficient "relax-then-adjust" algorithm and provide results of performance evaluation.