摘要
基于周期维纳滤波理论的LCL-FRESH(Linear-Conjugate-Linear-FREquency-SHift)滤波器,利用了信号在频域的谱相关性,分离时域交叠信号,可有效地抑制直接序列扩频系统当中的宽带干扰。该滤波算法的效果不会随干扰增强而下降,同时还能利用干扰的谱相关性进一步提高滤波的性能。此外,仿真结果也进一步表明,在干扰与信号有载波偏移的情况下滤波性能更好。
Based on periodic Wiener filtering theory and the spectral correlation properties between signal and interference, LCL-FRESH algorithm can be used to suppress wideband interference efficiently. While the actual jamming boosts up, LCL-FRESH algorithm will strongly improve the filter performance by use of spectral correlation, In addition, the simulation in DSSS environment also illustrates the suppression result of enhancement while the carrier shift between interference and signal exists.
出处
《无线电通信技术》
2008年第3期19-21,51,共4页
Radio Communications Technology
关键词
宽带干扰抑制
线性-共轭-线性频移
谱相关性
直接序列扩频
wideband interference suppression
LCL-FRESH
spectral correlation
direct-sequence-spread-spectrum
