A power control algorithm for tv white space cognitive radio system
A power control algorithm for tv white space cognitive radio system
复制标题
电视空白频段认知无线电系统的功率控制算法
DOI：
10.1049/cp.2011.0728
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Nan Wang
中科院分区：
文献类型：
--
作者：
Nan Wang
英国的数字切换计划预计将于2012年完成，能够释放总计约240 MHz的电视带宽。这包括无线区域网络(WRAN)的IEEE 802.22标准中定义的免许可证访问电视空白区域(TVW)。本文基于现有的避让区域算法建立了一个仿真模型，并对该模型进行了验证，以利用认知无线电技术在英国任何给定的地点探索潜在的TVWS资源。提出了一种基于最大允许发射功率的功率控制算法，取代了保持域算法，提高了认知无线电(CR)操作的可用性。最后从系统容量的角度对这两种算法进行了比较。
The digital switchover plan in the UK, expected to be completed in 2012, is capable of freeing up a total of about 240MHz TV bandwidth. This includes the license-exempt access to TV White Spaces (TVWS) as defined in IEEE 802.22 standards for Wireless Regional Area Network (WRAN). In this paper, a simulation model based on the existing keep-away region algorithm is established and verified to explore the potential TVWS resources with the Cognitive Radio technology at any given location in the UK. The proposed power control algorithm based on the maximum allowed transmission power is to replace the keep-away region algorithm and improve the availability of a cognitive radio (CR) operation. Finally, a comparison between these two algorithms is made in terms of system capacity.