Cognitive Backscatter Network: A Spectrum Sharing Paradigm for Passive IoT

被引：34
作者：
Guo, Huayan [1 ,2 ]
Long, Ruizhe [1 ,2 ]
Liang, Ying-Chang [2 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Peoples R China
[2] Univ Elect Sci & Technol China, Ctr Intelligent Networking & Commun, Chengdu 611731, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2019年 / 8卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Internet of Things; spectrum sharing; ambient backscatter communications;
D O I：
10.1109/LWC.2019.2919835
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this letter, a novel spectrum sharing system referred to as cognitive backscatter network (CBN) is proposed to support passive Internet of Things (IoT) transmission via backscatter modulation, in which the primary system transmits a sinusoidal carrier in addition to its own signal. In contrast to existing ambient backscatter communications, the proposed CBN does not require perfect symbol synchronization between the IoT and the primary transmissions. We maximize the data rate of the IoT transmission subject to the minimum rate requirement of the primary system by jointly optimizing the time sharing and power allocation parameters. Numerical results have demonstrated the superiority of the proposed CBN over conventional TDMA scheme.
引用
收藏
页码：1423 / 1426
页数：4
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