On the achievable sum rate for two-way relay networks with stochastic energy harvesting
On the achievable sum rate for two-way relay networks with stochastic energy harvesting
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DOI：
10.1109/globalsip.2014.7032093
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
Wei Li;Meng-Lin Ku;Yan Chen;K. Liu
中科院分区：
文献类型：
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作者：
Wei Li;Meng-Lin Ku;Yan Chen;K. Liu
在本文中，使用随机能量收集（EH）模型研究了双向中继网络的最优传输策略。考虑到信道和有限的电池条件，我们提出了最佳中继传输策略，以最大化网络的长期可实现的总速率。设计问题被表述为马尔可夫决策过程（MDP），并使用众所周知的值迭代方法来寻找最优策略。基于最优传输策略，我们分析了预期可实现的总速率，并指出了相对于太阳能电池板尺寸的最优中继功率的扩展结构。模拟结果表明，我们提出的最优传输策略优于其他策略。
In this paper, an optimal transmission policy for two-way relay networks is investigated by using a stochastic energy harvesting (EH) model. Considering the channel and finite battery conditions, we propose an optimal relay transmission policy to maximize the long-term achievable sum rate of the network. The design problem is formulated as a Markov decision process (MDP), and the well-known value iteration approach is used to find the optimal policy. Based on the optimal transmission policy, we analyze the expected achievable sum rate and point out a spreading structure for the optimal relay power with respect to the solar panel size. Simulation results demonstrate that our proposed optimal transmission policy outperforms other policies.