| 分布式认知无线电网络中的主动频谱切换 |
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| 引用本文： | 蒋 华,马立川,严定宇,潘 楠.分布式认知无线电网络中的主动频谱切换[J].通信学报,2014,35(Z2):27-202. |
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| 作者姓名： | 蒋 华 马立川 严定宇 潘 楠 |
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| 作者单位： | 1.空军工程大学 电讯工程学院，陕西 西安710077；
2.西安电子科技大学 综合业务网理论及关键技术国家重点实验室，陕西 西安710071 |
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| 摘 要： | 主要研究分布式认知无线电网络中的频谱切换，并提出一种主动的频谱切换方案。认知用户通过感知结果与历史信息建立授权用户的活动模型，预测频谱的使用情况。在不对授权用户产生干扰的前提下，提前安排频谱切换。同时，采用基于蚁群任务分工算法的频谱选择方法，使得认知用户综合考虑通信参数，实现认知用户的按需切换，保证不间断的传输。仿真表明，提出的方案能够提前执行切换，并在较短的时间内完成业务量的传输，同时具备较高的灵活性，适用于分布式认知无线电网络。
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| 关 键 词： | 分布式认知无线电网络 频谱切换 频谱预测 蚁群任务分工算法 |
Proactive spectrum handoff in distributed cognitive radio networks |
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| Hua JIANG,Li-chuan MA,Ding-yu YAN,Nan PAN.Proactive spectrum handoff in distributed cognitive radio networks[J].Journal on Communications,2014,35(Z2):27-202. |
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| Authors: | Hua JIANG Li-chuan MA Ding-yu YAN Nan PAN |
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| Affiliation: | 1. School of Telecommunication and Engineering,Air Force Engineering Univ.,Xi’an 710077,China;2. State Key Lab.of Integrated Service Networks,Xidian Univ.,Xi’an 710071,China |
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| Abstract: | Researches on the spectrum handover in distributed cognitive radio network, and the method of proactive spectrum handoff is proposed. The model is established by spectrum sensing and the information before which shows the law authorized user follows, to predict the usage of spectrum. The cognitive user can perform spectrum handoff in advance without interference on the authorized user. At the same time, the method of spectrum selection based on the task allocation algorithm of ant colony is proposed, considering more communication parameters, making cognitive user can perform spectrum handoff as required, to ensure the uninterrupted transmission. Simulation and analysis show that, the proposed scheme can perform spectrum handoff in advance, complete transmission of the traffic in a short time and have a high flexibility for distributed cognitive radio network. |
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| Keywords: | distributed cognitive radio network spectrum handoff spectrum prediction task allocation algorithm of ant colony |
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