电子科技大学学报Issue(5)：663-668,6.DOI:10.3969/j.issn.1001-0548.2014.05.005
基于认知无线电的LTE系统频谱感知方法
Spectrum Sensing Method Based on Cognitive Radio in LTE Systems
摘要
Abstract
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.关键词
认知无线电/femtocell/能量检测/感知开销/感知周期/频谱感知/业务识别Key words
cognitive radio/femtocell/energy sensing/sensing overhead/sensing period/spectrum sensing/traffic identification分类
信息技术与安全科学引用本文复制引用
左旭舟,夏玮玮,沈连丰..基于认知无线电的LTE系统频谱感知方法[J].电子科技大学学报,2014,(5):663-668,6.基金项目
国家科技重大专项(2011ZX03005-004-03)；国家自然科学基金(61171081,61201175) （2011ZX03005-004-03）
