Design of Cognitive Radio Database using Terrain Maps and Validated Propagation Models
Design of Cognitive Radio Database using Terrain Maps and Validated Propagation Models
复制标题
使用地形图和经过验证的传播模型设计认知无线电数据库
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Fanan
中科院分区：
文献类型：
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作者：
A. Fanan;N. Riley;M. Mehdawi;Anwar Mohamed;Fanan
-认知无线电(CR)包括许多技术，这些技术使不同级别的系统能够自适应地自我编程，以更有效地利用日益拥挤的无线电频谱。CRS有可能使用分配给电视服务的频谱，而不是由主用户(TV)使用，而不会通过在TV白色空间(TVW)中使用适当的传播模型来对许可用户造成中断干扰。在本文中，我们讨论了认知无线电信道占用预测的两个相关方面。首先，我们继续研究在电视频段使用的三种传播模型(扩展的HATA、Davidson-Hata和Egli)中最好的传播模型，同时也找到了使用的最佳地形数据分辨率(1000、100或30m)。在用于预测TVWS系统性能时，我们使用实施时间和准确性这两个比较标准，将建模结果与在英国赫尔周围随机选择的地点进行的测量进行比较。其次，我们描述了如何通过创建一个灵活的模拟系统来创建TVWS数据库，从而将这些模型集成到一个数据库驱动的工具中，用于TVWS环境中的CR频道选择。
— Cognitive Radio (CR) encompasses a number of technologies which enable adaptive self-programing of systems at different levels to provide more effective use of the increasingly congested radio spectrum. CRs have potential to use spectrum allocated to TV services, which is not used by the primary user (TV), without causing disruptive interference to licensed users by using appropriate propagation modelling in TV White Spaces (TVWS). In this paper we address two related aspects of channel occupancy prediction for cognitive radio. Firstly, we continue to investigate the best propagation model among three propagation models (Extended-Hata, Davidson-Hata and Egli) for use in the TV band, whilst also finding the optimum terrain data resolution to use (1000, 100 or 30 m). We compare modelled results with measurements taken in randomly-selected locations around Hull UK, using the two comparison criteria of implementation time and accuracy, when used for predicting TVWS system performance. Secondly, we describe how such models can be integrated into a database-driven tool for CR channel selection within the TVWS environment by creating a flexible simulation system for creating a TVWS database.