摘要
随着超宽带技术的不断发展,脉冲无线电系统越来越受到关注。通常这些系统在频带规划上要求与目前的窄带系统相重叠,相互共存但不能相互干扰。然而,窄带系统通常对脉冲无线电产生干扰。分析一种基于最小均方误差(MMSE)联合估计的窄带干扰(NBI)的抑制算法。理论分析表明,该算法可以有效抑制窄带干扰。该结论可扩展到当接收机的相关器个数多于信道抽头数的情况。
Recently, with the development of the ultra - wideband radio, impulse radio（IR） system have been paid much attention during these years. Those systems are designed to coexist with narrowband systems without interference with each other. Nevertheless, the narrowband systems can cause interference which can fail the receiver. This paper analyses a kind of narrowband interference suppression algorithm for ultra - wideband systems, based on MMSE combining. The theoretical analysis reveals that the algorithm can almost eliminate the NBI, The result also can be extended to the case where the receiver has more correlators than channel taps.
出处
《信息技术》
2006年第11期67-70,共4页
Information Technology
关键词
脉冲无线电
最小均方误差
窄带干扰
超宽带系统
impulse radio （IR）
minimal mean - square error （MMSE）
narrowband interference （NBI）
ultra - wideband system
