DS-UWB系统中一种抑制窄带干扰的多天线接收机  

Multi-antenna Receiver to Suppress the Narrow Band Interference in DS-UWB Systems

作　　者：齐丽娜[1] 朱洪波[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003

出　　处：《微波学报》2009年第4期37-40,共4页Journal of Microwaves

基　　金：国家自然科学基金(60572024);教育部博士点基金项目(20050293003)

摘　　要：直接序列扩频超宽带(DS-UWB)系统采用窄脉冲和扩频技术能够与其它无线电系统共存,但是,在进行系统设计时,必须对同频段系统的干扰加以抑制。文中在存在窄带干扰的情况下,提出一种自适应多天线Rake接收机,通过自适应调整天线合并权向量来抑制窄带干扰对系统的影响,并通过仿真实验与现有抑制窄带干扰接收机进行比较。理论分析与仿真结果表明,该接收机具有较好的环境鲁棒性,并且能够一定程度上抑制窄带系统对DS-UWB系统的干扰,保证系统接收性能。Directed-Spread-Spectrum Ultra Wide Band （DS-UWB） is an effective technique that enables coexistence with other radio systems using very short pulses and spread spectrum. However, there are potential interferences among those using the same frequency bands. To mitigate the effects of interference from other radio systems, a novel receiver structure with adaptive multi-antennas and Rake receivers is presented, and compared with the current receivers using simulation test. Theoretical analysis and simulation results show that the proposed receiver is robust to the environment, and can suppress the narrow band interference （NBI） to the DS-UWB systems.

关 键 词：直接序列扩频超宽带 窄带干扰 RAKE接收机 LMS算法 

分 类 号：TN851[电子电信—信息与通信工程]