標題: A Novel Sub-Nyquist Sampling of Sparse Wideband Signals
作者: Lin, Chia-Hua
Tsai, Shang-Ho
Chuang, Gene C. H.
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Compressive sensing (CS);sub-Nyquist sampling;spectrum blind reconstruction;modulated wideband converter (MWC);random demodulator (RD)
公開日期: 2013
摘要: We propose a Sub-Nyquist sampling scheme using only one mixer, one filter bank with M subfilters and M low rate ADCs. Compared to the MWC (Modulated Wideband Converter) system in [1], the proposed sampling system has several complexity advantages. First, due to the use of only one mixer, the hardware complexity for analog circuits is significantly reduced. Moreover, the system only needs one PN sequence and thus the search complexity for the best sequence is greatly reduced. The use of the best sequence enables the proposed system to achieve a smaller mean square error (MSE) between the original and the reconstructed signals than that of the MWC system. Simulation results are provided to show the performance superiority of the proposed system in terms of MSE and recovery percentage.
URI: http://hdl.handle.net/11536/23530
ISBN: 978-1-4799-0356-6
ISSN: 1520-6149
期刊: 2013 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP)
起始頁: 4628
結束頁: 4632
Appears in Collections:Conferences Paper