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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。
Direct Sequence Spread Spectrum Ultra-Wideband (DS-UWB) systems can coexist with other radio systems using narrow-pulse and spread-spectrum techniques, but system-wide interference suppression must be suppressed during system design. In the presence of narrowband interference, an adaptive multi-antenna Rake receiver is proposed to suppress the impact of narrowband interference on the system by adaptively adjusting the antenna combining weight vector. The simulation experiments are compared with the existing narrowband interference receiver Compare Theoretical analysis and simulation results show that the receiver has good environmental robustness and can suppress the interference of the narrowband system to DS-UWB system to a certain extent and ensure the receiving performance of the system.