宽带与超宽带室内无线信道特性比较与分析

Comparison and analysis with wide - band and ultra - wide band in indoor radio environment

对超宽带(UWB)与宽带无线通信系统的信道特性进行了分析比较,其中包括发送脉冲波形、脉冲响应、到达时间、均方延迟扩展(RMS)、功率延迟分布(PDP)以及一些描述信道特性的关键参数。UWB脉冲信号在纳秒级,具有很大的路径分辨率,多径分量数少且时间延迟扩展小,在实际通信系统中表现为传码率高,在相同条件下,码间干扰(ISI)低于传统的宽带系统。

Analysis and compare of radio channel characteristics between Ultra-Wide Bandwidth (UWB) and Wide-Bandwidth(WB) communication systems have been performed,including impulse waveform,impulse response, arrival time, RMS, PDP and other parameters about the radio channel characteristics. The higher path resolution of UWB systems leads to less number of paths in each bin .less time delay spread and high spread and high bit rate. The ISI of UWB is lower than traditional WB systems under the same condition.