| 认知电力物联网电视频谱感知方法 |
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| 引用本文： | 李博,翟少磊,张林山,曹敏,王艳艳,朱婧.认知电力物联网电视频谱感知方法[J].电视技术,2016,40(4):69-73. |
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| 作者姓名： | 李博 翟少磊 张林山 曹敏 王艳艳 朱婧 |
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| 作者单位： | 1. 云南电网有限责任公司电力科学研究院,云南昆明,650217;2. 电子科技大学电子工程学院,四川成都,610054 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 基于认知无线电(CR)技术的电力物联网(IOTIPS)通过频谱感知实现对空闲授权频段的接入,可以有效提高频谱利用率,由于电力物联网的通信环境复杂,载波频偏无法避免,提出一种适用于电视频段授权用户数字地面多媒体广播(DT-MB)的复合相关检测算法,可以在大载波频偏条件下保持对DTMB信号稳定的检测性能,提升了通信网络的可靠性.同时基于复合相关检测的协作频谱感知,可以有效降低隐藏终端对感知性能的不利影响,提高认知电力物联网的通信效率.
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| 关 键 词： | 电力物联网 认知无线电 频谱感知 数字地面多媒体广播 |
| 收稿时间： | 2015/11/5 0:00:00 |
| 修稿时间： | 2015/12/2 0:00:00 |
TV Spectrum Sensing Method for the Internet of Things in Power Systems |
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| Li Bo,ZHAI Shao-lei,zhang linshan,CAO Min,wang yanyan and ZHU Jing.TV Spectrum Sensing Method for the Internet of Things in Power Systems[J].Tv Engineering,2016,40(4):69-73. |
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| Authors: | Li Bo ZHAI Shao-lei zhang linshan CAO Min wang yanyan and ZHU Jing |
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| Affiliation: | Electric Power Research Institute, Yunnan Power Grid Limited Liability Company,Electric Power Research Institute, Yunnan Power Grid Limited Liability Company,Electric Power Research Institute, Yunnan Power Grid Limited Liability Company, Kunming Yunnan,Electric Power Research Institute, Yunnan Power Grid Limited Liability Company,University of Electronic Science and Technology of China,School of Electronic Engineering, University of Electronic Science and Technology of China |
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| Abstract: | Based on Cognitive Radio (CR), the IOTIPS implements spectrum sensing (SS) to access idle TV bands to communicate, which can effectively solve the spectral scarcity. However, because the communication environment of the IOTIPS is complex, the carrier frequency offset(CFO) can not be avoided. In this paper, a composite correlation based waveform detection (CC-WD) algorithm for digital terrestrial multimedia broadcasting (DTMB) signal is proposed, which can maintain stable detection performance against large CFO and enhance the reliability of communication network. Based on the CC-WD, the cooperative spectrum sensing can effectively reduce the adverse impact on the perception of hidden terminal based on performance, effectively improve the efficiency of IOTIPS. |
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| Keywords: | the Internet of Things in Power Systems CR spectrum sensing DTMB |
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