车辆动态频谱接入的空置UHF电视频道特性

S. Pagadarai, A. Wyglinski, Rama Vuyyuru
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引用次数: 72

摘要

在本文中,我们提出了定量和定性的结果所获得的电视频谱测量活动的结果。我们使用这些测量来描述美国马萨诸塞州沿主要州际公路(I-90)的空闲电视频道。通过表征470-806 MHz频率范围内空闲电视频道的可用性,我们从车辆动态频谱接入的角度展示了空闲频道可用性的趋势。我们还描述了在这种情况下对基于点对多点通信的体系结构施加的设计约束。具体来说,我们描述了一种通用的地理位置数据库方法来创建给定地理区域内可用通道的频谱图。我们展示了在MA州I-90上的几个位置应用这种技术获得的结果。此外,我们从车载通信的角度讨论了电视频谱中非连续信道可用性对认知无线电收发器设计的影响。在我们未来的工作中,我们将对2009年6月12日进行的转换前后上述地理区域的频道可用性进行比较研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterization of vacant UHF TV channels for vehicular dynamic spectrum access
In this paper, we present quantitative and qualitative results obtained as a result of a TV spectrum measurement campaign. We used these measurements to characterize vacant TV channels a along major interstate highway (I-90) in the state of Massachusetts, USA. By characterizing the availability of vacant TV channels in the 470–806 MHz frequency range, we show the trends in the availability of vacant channels from a vehicular dynamic spectrum access perspective. We also describe the design constraints imposed on a point-to-multipoint communications based architecture in such a setting. Specifically, we described a general geo-location database approach to create a spectral map of available channels in a given geographical area. We presented the results obtained by applying such a technique in the state of MA over several locations on I-90. Furthermore, we presented a discussion on the implications of the non-contiguous channel availability in the TV spectrum on the design of a cognitive radio transceiver from the perspective of vehicular communications. In our future work, we will be presenting a comparative study of the channel availability in the above mentioned geographical area before and after the switch-over carried out on June 12, 2009.
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