认知网络中频谱感知的效率-精度权衡

2012 Second International Conference on Instrumentation, Measurement, Computer, Communication and Control Pub Date : 2012-12-08 DOI:10.1109/IMCCC.2012.267

Wujian Sun, Weiguo Dai, Zhang Lei, Liu Yang, L. Ou

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引用次数: 5

摘要

频谱感知是认知无线电技术的第一步，其感知效率和精度无法同时优化。这两个指标之间的权衡是通过感知持续时间和感知周期来表示的，它们是频谱感知中最重要的参数。以最大可用频谱机会为目标，提出了在给定阈值下对许可用户干扰的效率-精度折衷方案。基于Neyman-Pearson准则，建立了联合最优数学模型，导出了封闭表达式。仿真结果验证了所提方案的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Efficiency-Accuracy Trade-off for Spectrum Sensing in Cognitive Network

Spectrum sensing is the first and foremost step in cognitive radio technology, where sensing efficiency and accuracy cannot be simultaneously optimized. Tradeoff between the two metrics is represented by sensing duration and sensing period, which are among the most important parameters in spectrum sensing. Aiming at maximize overall available spectrum opportunity, an efficiency-accuracy tradeoff is proposed with interference to licensed user under specified threshold. Based on Neyman-Pearson criterion, joint optimal mathematical model is established and closed-form expressions are derived. Optimal sensing parameters can be obtained and simulation results verified our proposed scheme.

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2012 Second International Conference on Instrumentation, Measurement, Computer, Communication and Control

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