Spectrum sensing method based on cognitive radio in LTE systems

被引：0

作者：

Zuo, Xu-Zhou ^{[1
]}

Xia, Wei-Wei ^{[1
]}

Shen, Lian-Feng ^{[1
]}

机构：

[1] National Mobile Communications Research Laboratory, Southeast University, Nanjing

来源：

Dianzi Keji Daxue Xuebao/Journal of the University of Electronic Science and Technology of China | 2014年 / 43卷 / 05期

关键词：

Cognitive radio; Energy sensing; Femtocell; Sensing overhead; Sensing period; Spectrum sensing; Traffic identification;

D O I：

10.3969/j.issn.1001-0548.2014.05.005

中图分类号：

学科分类号：

摘要：

A spectrum sensing method in the femtocell of long time evolution (LTE) system is proposed. In this method, the femtocells sense the uplink spectrum via energy sensing and discover the active macrocell users through two-steps decision spectrum sensing method. The femtocells identify the traffic types of these active macrocell users and adjust the sensing period according to different traffic types to implement the tradeoffs between throughput and sensing overhead of femtocells. Simulation results indicate that this method can improve the femtocell throughput and system performance when the interference to macrocell users and sensing overhead are effectively controlled.

引用

页码：663 / 668

页数：5

共 15 条

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