超宽带信号的一种带通采样与重建方法  

Bandpass sampling and reconstruction method for UWB signals

作　　者：杨峰[1] 胡剑浩[1] 李少谦[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家重点实验室,四川成都610054

出　　处：《系统工程与电子技术》2010年第4期686-690,共5页Systems Engineering and Electronics

基　　金：国家重点基础研究发展计划(973计划)(2007CB310604)资助课题

摘　　要：针对超宽带无线通信中需要设计采样速率高达数十GHz高速模/数转换器的问题,提出了一种带通采样和总体最小二乘重建算法。该算法所要求的采样速率与信号新息率相当,远远低于传统香农采样理论所要求的奈奎斯特率。分析和仿真结果证明,所提出的采样和重建算法,能够准确地恢复原始超宽带信号,并具有良好的抗噪声性能。The most difficult job in ultra-wideband（UWB） wireless communications is to design the high speed ADC in which the sampling rate is as high as tens of GHz.A bandpass sampling and total least square reconstruction method is proposed.The required sampling rate of the proposed method is close to the signal innovation rate,which is much lower than the Nyquist rate in conventional Shannon sampling theorem.Analysis and simulation results show that the proposed method can accurately reconstruct the original UWB pulses with much lower sampling rate in the presence of noises.

关 键 词：超宽带信号 带通采样 重建 新息率 总体最小二乘 

分 类 号：TN92[电子电信—通信与信息系统]