Dynamic Resource Allocation in Cognitive Radio Networks
Dynamic Resource Allocation in Cognitive Radio Networks
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DOI：
10.1109/msp.2010.936022
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发表时间：
2010-01
影响因子：
14.9
通讯作者：
Rui Zhang;Ying-Chang Liang;Shuguang Cui
中科院分区：
文献类型：
--
作者：
Rui Zhang;Ying-Chang Liang;Shuguang Cui
本文概述了新兴认知无线电（CR）无线网络在空间、时间和频率上的通信资源分配的最新成果。重点关注认知无线电为保护主无线电传输而采用的干扰功率/干扰温度（IT）约束方法，提出了许多有关认知无线电系统设计的新的挑战性问题，并表明通过重构一些传统（非认知无线电）无线网络的经典结果可以获得一些相应的解决方案。研究表明，凸优化在严谨且高效地解决这些问题方面起着至关重要的作用。还讨论了认知无线电及其他相关多用户通信系统的干扰管理方面有前景的研究方向。
This article provides an overview of the state-of-art results on communication resource allocation over space, time, and frequency for emerging cognitive radio (CR) wireless networks. Focusing on the interference-power/interference-temperature (IT) constraint approach for CRs to protect primary radio transmissions, many new and challenging problems regarding the design of CR systems are formulated, and some of the corresponding solutions are shown to be obtainable by restructuring some classic results known for traditional (non-CR) wireless networks. It is demonstrated that convex optimization plays an essential role in solving these problems, in a both rigorous and efficient way. Promising research directions on interference management for CR and other related multiuser communication systems are discussed.