Novel Relay Selection Strategies for Cooperative NOMA

Novel Relay Selection Strategies for Cooperative NOMA
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协作 NOMA 的新颖中继选择策略

DOI:
10.1109/tvt.2017.2752264
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发表时间:
2017-09
影响因子:
6.8
通讯作者:
Fan Pingzhi
Fan Pingzhi
中科院分区:
计算机科学2区
文献类型:
--
作者:
Yang Zheng;Ding Zhiguo;Wu Yi;Fan Pingzhi

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在本文中,我们考虑非正交多址(NOMA)中继网络,其中一个基站借助多个中继与两个移动用户进行通信。我们提出了一种针对 NOMA 网络的两阶段中继选择策略,其中解码转发 (DF) 和放大转发 (AF) 中继协议分别具有不同的用户服务质量要求。然后,以闭式表达式获得NOMA两级DF和AF方案的中断概率,并根据它们在高信噪比下的渐近表达式确定分集阶数。开发的分析结果和计算机模拟均表明,NOMA 两级 DF (AF) 中继优于为协作 NOMA 和正交多址网络开发的现有中继选择策略。
In this paper, we consider non-orthogonal multiple access (NOMA) relaying networks, where one base station communicates with two mobile users with the aid of multiple relays. We propose a two-stage relay selection strategy for NOMA networks with decode-and-forward (DF) and amplify-and-forward (AF) relaying protocols with different quality of service requirements at the users, respectively. Then, the outage probabilities of the NOMA two-stage DF and AF schemes are obtained in closed-form expressions, and the diversity order is determined based on their asymptotic expressions at high signal-to-noise ratio. Both of the developed analytical results and carried out computer simulations show that NOMA two-stage DF (AF) relaying is superior to existing relay selection strategies developed for cooperative NOMA and orthogonal multiple access networks.
DOI: 10.1109/lcomm.2015.2441064
发表时间: 2015-08-01
期刊: IEEE COMMUNICATIONS LETTERS
影响因子: --
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