| 无线认知传感器网络的节能频谱感知策略 |
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| 引用本文： | 邹丹,钟国辉,屈代明,曹洋. 无线认知传感器网络的节能频谱感知策略[J]. 中国科学技术大学学报, 2009, 39(10) |
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| 作者姓名： | 邹丹 钟国辉 屈代明 曹洋 |
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| 作者单位： | 华中科技大学电子与信息工程系,湖北武汉,430074 |
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| 摘 要： | 针对无线认知传感器网络频谱感知过程中的能耗,提出两种节能策略:①使用可信度投票算法来减少传输检测结果的节点个数;②使用基于部分可观测马尔可夫决策过程的检测算法来减少检测次数.仿真结果表明这两种算法均能有效减少检测能耗,而且组合使用时相比一般算法能节省不低于30%的能量,同时保证检测可靠度满足系统要求.
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| 关 键 词： | 无线传感器网络 认知无线电 频谱感知 节能 |
Energy-efficient spectrum sensing in wireless cognitive sensor networks |
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| ZOU Dan,ZHONG Guo-hui,QU Dai-ming,CAO Yang. Energy-efficient spectrum sensing in wireless cognitive sensor networks[J]. Journal of University of Science and Technology of China, 2009, 39(10) |
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| Authors: | ZOU Dan ZHONG Guo-hui QU Dai-ming CAO Yang |
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| Abstract: | Two energy-efficient strategies are proposed to reduce the energy consumed in the spectrum sensing procedure for wireless cognitive sensor networks. One involves using confidence voting algorithm to reduce the detection number, the other is based on Partially Observable Markov Decision Process (POMDP). Simulation results show that both algorithms can reduce the energy consumed in the detection efficiently, and the combination of the two algorithms can save more than 30% energy compared with the general algorithm with system detection reliability requirement guaranteed. |
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| Keywords: | wireless sensor networks cognitive radio spectrum sensing energy-efficient |
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