Spectrum measurement and utilization in an outdoor 5-GHz Wi-Fi network using cooperative cognitive radio system,International Journal of Communication Systems

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Spectrum measurement and utilization in an outdoor 5-GHz Wi-Fi network using cooperative cognitive radio system
International Journal of Communication Systems ( IF 1.7 ) Pub Date : 2021-04-30 , DOI: 10.1002/dac.4774
Walid El‐Shafai _{1,

2} , Ahmed Fawzi _{2,

3} , Abdelhalim Zekry ₄ , Fathi E. Abd El‐Samie _{2,

5} , Mohammed Abd‐Elnaby ₆

Affiliation

Nowadays, the popular 2.4-GHz band is used in different systems, such as Wi-Fi, Bluetooth, wireless sensor systems, and wireless cameras. Instead of the over-crowded 2.4-GHz Wi-Fi band, this research offers the experience of using the 5-GHz Wi-Fi band, which provides more spectrum availability, more channels, larger bandwidth, faster data transmission, higher data rates, higher speed, and better quality of service compared to those of the 2.4-GHz band. In this paper, practical implementation and testing of a cooperative spectrum sensing system are presented. The spectrum utilization in the 5-GHz Wi-Fi licensed band at six different locations is investigated to allow the transition of secondary users (SUs) to free bands. The spectrum measurement is performed on a centralized cooperative spectrum sensing system, which consists of a master cognitive radio node and five cognitive radio stations. The measurement and simulation results for the practical system are compared with the previous related measurements obtained in Singapore, Barcelona, North Dakota (USA), and Germany. They all agree that the spectrum is underutilized, and it needs to be better utilized for increasing the spectrum efficiency. The practical results show that the newly implemented system in the 5-GHz range fulfills the requirements of users with high efficiency and high quality of service compared to those of the 2.4-GHz system.

中文翻译：

使用协作认知无线电系统的室外 5-GHz Wi-Fi 网络中的频谱测量和利用

如今，流行的 2.4-GHz 频段用于不同的系统，例如 Wi-Fi、蓝牙、无线传感器系统和无线摄像头。这项研究提供了使用 5 GHz Wi-Fi 频段的经验，而不是过度拥挤的 2.4 GHz Wi-Fi 频段，该频段提供更多频谱可用性、更多信道、更大带宽、更快的数据传输、更高的数据速率，与 2.4 GHz 频段相比，速度更快，服务质量更好。在本文中，介绍了协作频谱感知系统的实际实现和测试。调查了六个不同位置的 5 GHz Wi-Fi 许可频段中的频谱利用率，以允许次要用户 (SU) 过渡到免费频段。频谱测量在集中式协作频谱感知系统上进行，它由一个主认知无线电节点和五个认知无线电台组成。实际系统的测量和仿真结果与之前在新加坡、巴塞罗那、北达科他州（美国）和德国获得的相关测量结果进行了比较。他们都同意频谱未被充分利用，需要更好地利用频谱以提高频谱效率。实际结果表明，与 2.4 GHz 系统相比，5 GHz 范围内新实施的系统满足了用户对高效率和高质量服务的要求。他们都同意频谱未得到充分利用，需要更好地利用频谱以提高频谱效率。实际结果表明，与 2.4 GHz 系统相比，5 GHz 范围内新实施的系统满足了用户对高效率和高质量服务的要求。他们都同意频谱未得到充分利用，需要更好地利用频谱以提高频谱效率。实际结果表明，与 2.4 GHz 系统相比，5 GHz 范围内新实施的系统满足了用户对高效率和高质量服务的要求。

更新日期：2021-06-03

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