| 摘要: |
| 检测门限作为认知无线电系统的重要指标，其合理设置是确保授权系统和认知系统工作的基
础。认知TD-LTE系统对数字电视广播信号的检测门限分析利用系统间共存研究
方法，仿真了不同典型参数下的覆盖区和干扰保护区，基于链路的对称性分析了认知TD-LT
E系统对数字电视广播信号的最小检测门限，并验证了此门限下的性能。仿真结果表明，
-87 dBm检测门限值既可满足对数字电视系统的保护，也可实现良好的检测和虚警性能。 |
| 关键词: 认知无线电；TD-LTE 检测门限；共存研究；数字广播电视；能量检测 |
| DOI：10.3969/j.issn.1001-893x.2013.07.025 |
|
| 基金项目:国家科技重大专项(2012ZX03003004,2012ZX03006003) |
|
| Detection threshold analysis of cognitive TD-LTE system based on coexistence of TD-LTE and digital broadcasting television |
| FANG Jian,YANG Wen-han,HUANG Biao |
| () |
| Abstract: |
| As a key indicator, reasonable setting of detection threshold guarante
es the authorization and cognitive system to work effectively. Under the guidanc
e of coexistence analysis between TD-LTE and digital broadcasting television, det
ection threshold can be derived by calculating coverage and protecting areas empl
oying symmetric link. Simulation results show that -87dBm detection thresho
ld can not only avoid interfering digital broadcasting television,but also achi
eve good performance of false alarm probability and detection probability. |
| Key words: cognitive radio (CR) TD-LTE detection threshold coexistence study DVB energy detection |
《电讯技术》编辑部 