Optical receiver and signal processing method
US-2017041080-A1 · Feb 9, 2017 · US
Signal processing device and signal processing method
US2019215145A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019215145-A1 |
| Application number | US-201816226893-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 20, 2018 |
| Priority date | Jan 11, 2018 |
| Publication date | Jul 11, 2019 |
| Grant date | — |
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Abstract
Official abstract text for this publication.
A signal processing device includes: a filter configured to perform an adaptive equalization process of a signal, on a basis of a filter coefficient; an updater configured to update the filter coefficient, on a basis of amplitude of the signal and a target value of the amplitude; and a corrector configured to correct the target value, on a basis of the amplitude of the signal.
First claim
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What is claimed is: 1 . A signal processing device comprising: a filter configured to perform an adaptive equalization process of a signal, on a basis of a filter coefficient; an updater configured to update the filter coefficient, on a basis of amplitude of the signal and a target value of the amplitude; and a corrector configured to correct the target value, on a basis of the amplitude of the signal. 2 . The signal processing device as claimed in claim 1 , wherein the corrector is configured to correct the target value, with use of an average value of the amplitude that is detected twice or more. 3 . The signal processing device as claimed in claim 1 , further comprising: a calculator configured to calculate a difference between the amplitude and a predetermined value, wherein the corrector is configured to correct the target value, on a basis of the difference. 4 . The signal processing device as claimed in claim 3 , wherein: the calculator is configured to calculate the difference twice or more and calculate an average value of the difference calculated twice or more; and the corrector is configured to correct the target value, with use of the average value. 5 . The signal processing device as claimed in claim 1 , wherein: a symbol of a predetermined pattern is inserted into the signal; and the corrector is configured to correct the target value with respect to each type of the symbol. 6 . A signal processing method comprising: performing an adaptive equalization process of a signal, on a basis of a filter coefficient; updating the filter coefficient, on a basis of amplitude of the signal and a target value of the amplitude; and correcting the target value, on a basis of the amplitude of the signal. 7 . The method as claimed in claim 6 , wherein the target value is corrected, with use of an average value of the amplitude that is detected twice or more. 8 . The method as claimed in claim 6 , further comprising: calculating a difference between the amplitude and a predetermined value, wherein the target value is corrected, on a basis of the difference. 9 . The method as claimed in claim 8 , wherein: the difference is calculated twice or more and an average value of the difference calculated twice or more is calculated; and the target value is corrected, with use of the average value. 10 . The method as claimed in claim 6 , wherein: a symbol of a predetermined pattern is inserted into the signal; and the target value is corrected with respect to each type of the symbol.
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Classifications
with a non-recursive structure (H04L25/03031 takes precedence) · CPC title
Demodulator circuits; Receiver circuits · CPC title
Equalisers {(baseband equalizers at the transmitter end H04L25/03343; in analogue transmission systems H04B3/04, H04B7/005)} · CPC title
in external modulation systems · CPC title
with photonic or optical means · CPC title
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Frequently asked questions
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- What does patent US2019215145A1 cover?
- A signal processing device includes: a filter configured to perform an adaptive equalization process of a signal, on a basis of a filter coefficient; an updater configured to update the filter coefficient, on a basis of amplitude of the signal and a target value of the amplitude; and a corrector configured to correct the target value, on a basis of the amplitude of the signal.
- Who is the assignee on this patent?
- Fujitsu Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04B10/616. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jul 11 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).