摘要
提出了用于直扩CDMA通信中抑制大功率窄带干扰的改进条件中值滤波(ICMF)算法。文中给出了算法的FPGA实现方案,并在Quartus环境下对系统进行了仿真。仿真结果表明,该算法能够有效的抑制干扰,提高通信质量。此外,该算法资源消耗少,可在Altera的低成本产品Cyclone II系列的芯片上实现,因此具有很强的实用性。
An improved conditional median filter （ICMF） method is proposed in this paper to suppress narrow band interference （NBI） in direct-spread CDMA communication. The implementation scheme of ICMF method with FPGA is given in the paper, and the system is simulated in the quartus environment. The simulation results show that ICMF method can suppress interference effectively and improve communication quality. Additionally, the system＇s resources consumption is low, so it can be implemented on Cyclone Ⅱ series, which is the low-cost FPGA chip of Altera company. The system＇s practicability is strong.
出处
《信息技术》
2009年第4期58-62,共5页
Information Technology
