摘要
基于抑制MB-OFDM-UWB系统中干扰信号的目的,提出了一种抑制系统带宽内干扰信号的新算法。该算法采用两组自适应干扰对消滤波器,利用LMS方法来实现对干扰信号的抑制。通过仿真,在接收端利用频谱和星座图两种途径分析了该算法对干扰信号的抑制效果。仿真结果表明,该算法在不损失带内有用信号电平的情况下,对干扰信号抑制达到30 d B。因此,对UWB信号带内的干扰信号起到了良好的抑制作用。
Based on the purpose of suppressing undesired signals on MB-OFDM-UWB systems, the article proposes a new al- gorithm to suppress undesired signals with two sets of adaptive interference cancellation filter by the LMS method. Through simulation, the article analyzed the undesired signal suppression effect by two ways. Simulation results show that the algorithm proposed in this paper is able to achieve 30 dB signal-to-interference suppression without damaging desired signals. Hence, the algorithm is significant.
出处
《电子设计工程》
2015年第23期54-55,59,共3页
Electronic Design Engineering
