Title:
SPARSE LMS METHOD COMBINING ZERO ATTRACTION PENALTY AND ATTRACTION COMPENSATION
Document Type and Number:
WIPO Patent Application WO/2022/184180
Kind Code:
A1
Abstract:
The present invention relates to the field of signal processing, and to a sparse LMS method combining zero attraction penalty and attraction compensation. In the method, zero attraction penalty and attraction compensation are combined, coefficients of an estimation filter are divided into a near-zero coefficient, a small coefficient and a large coefficient, and then different attraction methods are used. In each iteration update, for the near-zero coefficient of the estimation filter, only a product term in an iterative update formula is used to calculate; for the large coefficient of the estimation filter, a trace amount of attraction compensation is performed thereon to accelerate the convergence speed of the estimation filter coefficient approaching a large coefficient of a channel; and for the small coefficient of the estimation filter, if the coefficient approaches a zero coefficient value or a large coefficient value of the channel during iteration, processing is performed according to the methods for the near zero coefficient and the large coefficient of the estimation filter, respectively, or otherwise, simple zero attraction penalty is performed on the small coefficient. The method is high in convergence speed, low in complexity and wide in the scope of application of a tuning parameter.
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Inventors:
ZHANG HONGSHENG (CN)
MENG JIN (CN)
GAN JIZHANG (CN)
YANG HONG (CN)
HUANG YI (CN)
LIU TING (CN)
MENG JIN (CN)
GAN JIZHANG (CN)
YANG HONG (CN)
HUANG YI (CN)
LIU TING (CN)
Application Number:
PCT/CN2022/080833
Publication Date:
September 09, 2022
Filing Date:
March 15, 2022
Export Citation:
Assignee:
UNIV CHONGQING POSTS & TELECOM (CN)
International Classes:
H04L25/02; H04M9/08
Foreign References:
| CN113037661A | 2021-06-25 | |||
| CN110572525A | 2019-12-13 | |||
| CN111277244A | 2020-06-12 | |||
| CN109257030A | 2019-01-22 | |||
| CN109347457A | 2019-02-15 | |||
| US20150263701A1 | 2015-09-17 |
Attorney, Agent or Firm:
TIDYTEND INTELLECTUAL PROPERTY LAW FIRM (CN)
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