Random projection method for ultra wideband signal acquisition

doi:10.1016/S1005-8885(10)60117-3

中国邮电高校学报(英文) ›› 2011, Vol. 18 ›› Issue (6): 14-21.doi: 10.1016/S1005-8885(10)60117-3

Random projection method for ultra wideband signal acquisition

林杰¹,石光明²,²,陈旭阳²,²,张犁²,²

School of Electronic Engineering, Xidian University, Xi’an 710071, China

收稿日期:2011-03-01 修回日期:2011-07-16 出版日期:2011-12-31 发布日期:2011-12-30
通讯作者: 林杰 E-mail: jlin@mail.xidian.edu.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (60736043, 61070138, 61033004), the Specialized Research Fund for the Doctoral Program of High Education (200807010004).

Random projection method for ultra wideband signal acquisition

School of Electronic Engineering, Xidian University, Xi’an 710071, China

Received:2011-03-01 Revised:2011-07-16 Online:2011-12-31 Published:2011-12-30
Contact: Jie Lin E-mail: jlin@mail.xidian.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (60736043, 61070138, 61033004), the Specialized Research Fund for the Doctoral Program of High Education (200807010004).

摘要/Abstract

摘要：

High-speed high-resolution analog-to-digital (A/D) conversion demanded by ultra wideband (UWB) signal processing is a very challenging problem. This paper proposes a parallel random projection method for UWB signal acquisition. The proposed method can achieve high sampling rate, high resolution and technical feasibility of hardware implementation. In the proposed method, an analog UWB signal is projected over a set of random sign functions. Then the low-rate high-resolution analog-to-digital convertors (ADCs) are used to sample the projection coefficients. The signal can be reconstructed by simple linear calculation with the sampling matrix, without complying with optimization algorithm and prior knowledge. In other aspects, unlike other approaches that need to utilize an accurate time-shift at extremely high frequency, or design a hybrid filter bank, or generate specific basis functions or work for signals with prior knowledge, the proposed method is a universal sampling approach and easy to apply. The simulation results of signal to noise ratio (SNR) and spurious-free dynamic range (SFDR) validate the efficiency of the proposed method for UWB signal acquisition.

关键词:

random projection, high speed, high resolution, data acquisition, UWB signal

Abstract:

Key words:

random projection, high speed, high resolution, data acquisition, UWB signal

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Random projection method for ultra wideband signal acquisition

Random projection method for ultra wideband signal acquisition

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