Energy-Efficient Cooperative Communications for Multimedia Applications in Multi-Channel Wireless Networks
Energy-Efficient Cooperative Communications for Multimedia Applications in Multi-Channel Wireless Networks
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DOI：
10.1109/tc.2014.2345397
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发表时间：
2015-06
影响因子：
3.7
通讯作者：
Peng Li;Song Guo;Jiankun Hu
中科院分区：
文献类型：
--
作者：
Peng Li;Song Guo;Jiankun Hu
移动的多媒体通信的急剧增长对无线网络中的服务质量和能量效率提出了新的要求。在本文中，我们研究了能源和频谱有效的协作通信（ESCC）的问题，利用协作通信（CC）的移动的多媒体应用在多信道无线网络中的好处。在静态网络中，它被表述为一个混合整数非线性规划问题。为了解决这个问题，我们使用线性化和重构技术将其转化为一个混合整数线性规划问题，解决了分支定界算法具有增强的性能。针对动态网络中的问题，提出了一种计算复杂度和部署开销较低的在线算法。大量的仿真结果表明，该算法可以显着提高性能的能量效率在静态和动态网络。
The dramatic growth of mobile multimedia communications imposes new requirements on quality-of-service and energy efficiency in wireless networks. In this paper, we study the energy- and spectrum-efficient cooperative communication (ESCC) problem by exploiting the benefits of cooperative communication (CC) for mobile multimedia applications in multi-channel wireless networks. In a static network, it is formulated as a mixed-integer nonlinear programming problem. To solve this problem, we use linearization and reformulation techniques to transform it into a mixed-integer linear programming problem that is solved by a branch-and-bound algorithm with enhanced performance. To deal with the problem in dynamic networks, we propose an online algorithm with low computational complexity and deployment overhead. Extensive simulations are conducted to show that the proposed algorithm can significantly improve the performance of energy efficiency in both static and dynamic networks.