Abstract: In this paper, a binary signal scheme is adopted based on two scenes of IEEE 802.15.3a Ultra-Wide Bandwidth（UWB） channel model. The average bit error rate formula [Pe] is deduced with added signal observation time window [[0,T]] in the receiver. Two methods of adding window are presented. The simulation results show that both of two methods can get the suitable window [[0,T]] to ensure the most channel characteristics are captured and system average bit error rate [Pe] is close to the theoretical value, while the signal observation time is reduced.

Key words: Ultra-Wide Bandwidth（UWB）, channel model, time window, average bit error rate

摘要： 在IEEE 802.15.3a超宽带（UWB）信道模型两个场景基础上，采用二进制信号调制方案，推导了超宽带系统接收机端加信号观察时间窗[[0,T]]的平均误比特率[Pe]公式，提出了两种时间窗选取方法来寻找合适的窗长[T]，仿真结果表明所提出的时间窗选取方法在保证捕获了大部分信道特性基础上，其平均误比特率[Pe]接近理论值，并减少了信号观察时间。

关键词: 超带宽（UWB）, 信道模型, 时间窗, 平均误比特率