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.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
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
关键词
超宽带信号
带通采样
重建
新息率
总体最小二乘
（ultra-wideband） UWB signal
bandpass sampling
reconstruction
innovation rate
total least square
