中文摘要：

为了准确评价直接序列超宽带（DS-UWB）系统在窄带干扰抑制下的误比特率,提出了一种基于特征函数的方法,精确计算使用双边抽头横向滤波器抑制单音干扰后的系统误比特率,从数学上给出了双边抽头横向滤波器干扰抑制因子的表达式,并证明了滤波器抽头数足够多,单音干扰可以几乎完全被抑制.仿真及数值结果表明,该闭式误比特率性能分析方法具有准确性和有效性.

英文摘要：

In order to accurately evaluate the bit error rate（BER） of DS-UWB systems with narrowband interference suppressor,a method based on characteristic function（CF） is proposed for precisely calculating the BER of DS-UWB systems using two-sided transversal filters for rejection of single tone interference.We derive a mathematical expression called interference suppression factor of two-sided transversal filters.In addition,theory analyses show that with sufficiently large tap number,the tone interference could be almost cancelled totally.The simulation and numerical results validate the accuracy and effectiveness of analytical BER derivations.