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Title:
FRI SPARSE SAMPLING KERNEL FUNCTION CONSTRUCTION METHOD AND CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/223416
Kind Code:
A1
Abstract:
A finite rate of innovation (FRI) sparse sampling kernel function construction method and circuit. In the method, a condition that a sampling kernel needs to be satisfied is determined according to characteristics of an analog input signal and a subsequent parameter estimation algorithm, a frequency response function of a Fourier series coefficient screening circuit is designed, a performance parameter of the sampling kernel frequency response function is determined, and a sampling kernel function is obtained after correction. The circuit is implemented by cascading a Fourier series coefficient screening module and a phase correction module. The Fourier series coefficient screening module adopts a Chebyshev type-II low-pass filter circuit, and the phase correction module adopts an all-pass filter circuit. After a signal passes through the sampling kernel circuit, the signal can be sparsely sampled directly according to a signal FRI, and after sparse data is obtained, an original signal characteristic parameter can be accurately restored by using a parameter estimation algorithm. The FRI sparse sampling kernel is particularly suitable for FRI sparse sampling systems of pulse stream signals, and the sampling rate thereof is far lower than conventional Nyquist sampling rates, greatly reducing data collection volumes.

Inventors:
SONG, Shoupeng (NO.301, Xuefu RoadZhenjiang, Jiangsu 3, 212013, CN)
JIANG, Zhou (NO.301, Xuefu RoadZhenjiang, Jiangsu 3, 212013, CN)
Application Number:
CN2017/088676
Publication Date:
December 13, 2018
Filing Date:
June 16, 2017
Export Citation:
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Assignee:
JIANGSU UNIVERSITY (NO.301, Xuefu RoadZhenjiang, Jiangsu 3, 212013, CN)
International Classes:
H03H17/00; H03H17/02
Foreign References:
CN104468427A2015-03-25
US20140195200A12014-07-10
Other References:
WANG, YAJUN ET AL.: "Sampling Complex Pulse Streams with Finite Rate of Innovation Methods", JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY, vol. 35, no. 7, 31 July 2013 (2013-07-31), ISSN: 1009-5896
TAN, XUEQIN ET AL.: "Sampling and Reconstructing Algorithm for Non-bandlimited Signals Based on Finite Innovation Rate", JOURNAL OF DATA ACQUISITION & PROCESSING, 31 March 2010 (2010-03-31), ISSN: 1004-9037
SONG , SHOUPENG ET AL.: "Quadrature Demodulation Based Circuit Implementation of Pulse Stream for Ultrasonic Signal FRI Sparse Sampling", MEASUREMENT SCIENCE AND TECHNOLOGY, vol. 28, no. 3, 31 January 2017 (2017-01-31), pages 35005, XP020313829, ISSN: 1361-6501
NAGESH, SUDARSHAN ET AL.: "FRI Sampling and Reconstruction of Asymmetric Pulses", INTERNATIONAL CONFERENCE ON ACOUSTICS SPEECH AND SIGNAL PROCESSING ICASSP, 24 April 2015 (2015-04-24), pages 5957 - 5961, XP033187905, ISSN: 4673-6997
Attorney, Agent or Firm:
JW IP LAW FIRM (Room 701, Floor 7,Building A5, No. 14 Courtyard, Jiuxianqiao Road, Chaoyang District, Beijing 5, 100015, CN)
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