FILTER STATE DIVERGENCE JUDGEMENT METHOD AND DEVICE

WIPO Patent Application WO/2017/012350

A1

A filter state divergence judgement method and device, which are used for solving the problems in the prior art that a filter state judgement method has a relatively high calculation complexity and has a possibility of misjudgement. The method comprises: acquiring a near-end signal and a far-end signal synchronized with the near-end signal (300), and respectively performing synchronous framing processing on the near-end signal and the far-end signal, so as to obtain N pairs of synchronous frames (310); filtering the N pairs of synchronous frames via a filter, so as to obtain a mean value of N filter coefficient vectors corresponding to the N pairs of synchronous frames (320); respectively calculating N filter coefficient state reference quantities corresponding to the N pairs of synchronous frames according to the mean value of the N filter coefficient vectors (330); and when at least M filter coefficient state reference quantities greater than a pre-set threshold value exist in the N filter coefficient state reference quantities, determining that the filter is in a divergent state (340). Therefore, whether a filter is in a divergent state can be effectively determined, and update of a filter coefficient vector can be controlled.

JPH09233007	RADIO TRANSMITTER
JPS6116071	WAVEFORM EQUALIZER
JP2592390	ADAPTIVE AUTOMATIC EQUALIZER

SHLOMOT EYAL (US)
LIU YUANYUAN (CN)
LI HAITING (CN)

PCT/CN2016/075804

January 26, 2017

March 07, 2016

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HUAWEI TECH CO LTD (CN)

H03H21/00; H04B3/23; H04M1/20

CN105141287A	2015-12-09
CN101119135A	2008-02-06
CN1242651A	2000-01-26
CN101026392A	2007-08-29
CN102377453A	2012-03-14
CN103259563A	2013-08-21
JP2003324370A	2003-11-14
US8199927B1	2012-06-12

TDIP & PARTNERS (CN)

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