Power Allocation for Max-Sum Rate and Max-Min Rate Proportional Fairness in NOMA
Power Allocation for Max-Sum Rate and Max-Min Rate Proportional Fairness in NOMA
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DOI：
10.1109/lcomm.2016.2596760
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发表时间：
2016-10-01
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影响因子：
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通讯作者：
Choi, Jinho
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文献类型：
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作者：
Choi, Jinho
在这封信中，我们认为比例公平调度（PFS）的下行链路非正交多址接入（NOMA）与两个用户。与传统的多用户分集系统不同，功率分配在NOMA的PFS中起着关键作用，因为它可以同时支持多个用户以正传输速率。在不同的准则下，我们找到了最优的功率分配。其中，最大化最小归一化速率的PFS方案不仅可以提供比例公平性，而且传输速率变化小。
In this letter, we consider proportional fairness scheduling (PFS) for downlink non-orthogonal multiple access (NOMA) with two users. Unlike conventional multiuser diversity systems, the power allocation plays a key role in PFS for NOMA as it can support multiple users simultaneously with positive transmission rates. With different criteria, we find optimal power allocation. Among those, it is shown that the PFS scheme that maximizes the minimum normalized rate can provide not only proportional fairness, but also small variation of transmission rates.