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Performance evaluation of cooperative sensing via IEEE 802.15.4 radio

机译：通过IEEE 802.15.4无线电进行协作感测的性能评估

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Spectrum Sensing is one of the important tasks for the wireless devices but due to fading, shadowing and noise the performance of individual spectrum sensing devices is not ideal. Cooperative Sensing is seen as a way to improve the performance of individual spectrum sensing devices resultantly improving the efficient utilization of radio bandwidth and minimizing the interference among wireless devices. State of the art are extensive simulations and analysis on cooperative sensing although there are also number of performance evaluations of various fusion rules of cooperative sensing using software defined radios and FPGAs. The limitation of previous work is that they do not address the question how we can improve the overall performance of real systems with cooperative sensing. To the best of our knowledge, this is the first experimental work which presents cooperative sensing protocols with standard radios and evaluates the system performance using cooperative sensing. With IEEE 802.15.4 equipped radio devices we model primary, secondary and cooperating users. We implement cooperative sensing protocols, setup a scenario, perform measurements and compare system performance with and without cooperative sensing. All the experiments are automated with the wisebed testbed software. The evaluation results of cooperative sensing protocols indicate new challenges for optimization and provide awareness to the problem of improving the overall system performance.
机译：频谱感测是无线设备的重要任务之一，但是由于衰落，阴影和噪声，单个频谱感测设备的性能并不理想。合作感测被视为一种改善单个频谱感测设备性能的方法，从而提高了无线带宽的有效利用率，并最大程度地减少了无线设备之间的干扰。尽管还存在许多使用软件定义的无线电和FPGA对协作感知的各种融合规则进行性能评估的技术，但现有技术是对协作感知的广泛仿真和分析。先前工作的局限性在于它们没有解决我们如何通过协作感知来改善实际系统的整体性能的问题。据我们所知，这是第一项实验性工作，它提出了带有标准无线电的协作感测协议，并使用协作感测来评估系统性能。借助配备IEEE 802.15.4的无线电设备，我们可以对主要，次要和合作用户进行建模。我们实施有协同感应的协议，设置方案，执行测量并比较有无协同感应的系统性能。所有实验均通过wisebed测试平台软件实现自动化。协作感测协议的评估结果表明了优化方面的新挑战，并使人们意识到了改善整体系统性能的问题。

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