JP7139909B6 - 波形等化装置 - Google Patents
波形等化装置 Download PDFInfo
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- JP7139909B6 JP7139909B6 JP2018217072A JP2018217072A JP7139909B6 JP 7139909 B6 JP7139909 B6 JP 7139909B6 JP 2018217072 A JP2018217072 A JP 2018217072A JP 2018217072 A JP2018217072 A JP 2018217072A JP 7139909 B6 JP7139909 B6 JP 7139909B6
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- waveform equalization
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Optical Communication System (AREA)
- Filters That Use Time-Delay Elements (AREA)
Description
x k,m は、m番目の等化された出力信号y(m)に対するk次の入力信号x(m)をベクトル表記したものであり、xk,m=[x(m),x(m-1),・・・,x(m-Lk+1)]Tである。
w1は、式(A)の線形項のタップの重みづけをベクトル表記したものであり、w1=[w(0),w(1),・・・,w(L1+1)]Tであり、L1は、1次のメモリ長である。
w2,nは、n番目のカーネルに対する式(A)の非線形項のタップの重みづけをベクトル表記したものであり、w2,n=[w2(n,0),w2(1+n,1),・・・,w2(L2+n-1,L2-1)]Tであり、L2は、2次のメモリ長である。
Claims (2)
- 演算回路と記憶装置とを備え、非線形性が存在する入力信号xを2次のヴォルテラ級数で展開することにより波形等化した出力信号yを得る波形等化装置であって、
m番目の出力信号y(m)を以下の式(A)を用いて求める演算処理部を備える
ことを特徴とする波形等化装置。
x k,m は、m番目の等化された出力信号y(m)に対するk次の入力信号x(m)をベクトル表記したものであり、xk,m=[x(m),x(m-1),・・・,x(m-Lk+1)]Tである。
w1は、式(A)の線形項のタップの重みづけをベクトル表記したものであり、w1=[w(0),w(1),・・・,w(L1+1)]Tであり、L1は、1次のメモリ長である。
w2,nは、n番目のカーネルに対する式(A)の非線形項のタップの重みづけをベクトル表記したものであり、w2,n=[w2(n,0),w2(1+n,1),・・・,w2(L2+n-1,L2-1)]Tであり、L2は、2次のメモリ長である。 - 請求項1記載の波形等化装置において、
入力信号の間のビート干渉を除去する前処理を行う前処理部をさらに備える
ことを特徴とする波形等化装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018217072A JP7139909B6 (ja) | 2018-11-20 | 2018-11-20 | 波形等化装置 |
PCT/JP2019/043405 WO2020105430A1 (ja) | 2018-11-20 | 2019-11-06 | 波形等化装置 |
US17/294,799 US11418232B2 (en) | 2018-11-20 | 2019-11-06 | Waveform equalization device |
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JP2018217072A JP7139909B6 (ja) | 2018-11-20 | 2018-11-20 | 波形等化装置 |
Publications (3)
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JP2020088495A JP2020088495A (ja) | 2020-06-04 |
JP7139909B2 JP7139909B2 (ja) | 2022-09-21 |
JP7139909B6 true JP7139909B6 (ja) | 2024-02-07 |
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JP2018217072A Active JP7139909B6 (ja) | 2018-11-20 | 2018-11-20 | 波形等化装置 |
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US (1) | US11418232B2 (ja) |
JP (1) | JP7139909B6 (ja) |
WO (1) | WO2020105430A1 (ja) |
Families Citing this family (1)
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CN112532322B (zh) * | 2020-11-23 | 2022-05-17 | 同济大学 | 一种基于信道编码和二次vnle的im-dd光通信系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005303361A (ja) | 2004-04-06 | 2005-10-27 | Sony Corp | 信号処理装置及び方法、並びに信号復号装置及び方法 |
JP2016127599A (ja) | 2015-01-05 | 2016-07-11 | 富士通株式会社 | マルチキャリア光通信システムにおける非線形補償方法、装置及びシステム |
JP2017059962A (ja) | 2015-09-15 | 2017-03-23 | 富士通株式会社 | 伝送装置及び伝送システム |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001525101A (ja) * | 1998-02-12 | 2001-12-04 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 非線形尤逐次推定のための方法及び装置 |
US7251297B2 (en) * | 2000-11-22 | 2007-07-31 | Broadcom Corporation | Method and system to identify and characterize nonlinearities in optical communications channels |
US9621391B2 (en) * | 2013-09-24 | 2017-04-11 | Huawei Technologies Co., Ltd. | Methods and apparatuses to improve reception of direct detection optical signals |
US10608751B2 (en) * | 2017-03-15 | 2020-03-31 | Zte Corporation | Reception of twin single sideband signals using a MIMO filter |
-
2018
- 2018-11-20 JP JP2018217072A patent/JP7139909B6/ja active Active
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2019
- 2019-11-06 WO PCT/JP2019/043405 patent/WO2020105430A1/ja active Application Filing
- 2019-11-06 US US17/294,799 patent/US11418232B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005303361A (ja) | 2004-04-06 | 2005-10-27 | Sony Corp | 信号処理装置及び方法、並びに信号復号装置及び方法 |
JP2016127599A (ja) | 2015-01-05 | 2016-07-11 | 富士通株式会社 | マルチキャリア光通信システムにおける非線形補償方法、装置及びシステム |
JP2017059962A (ja) | 2015-09-15 | 2017-03-23 | 富士通株式会社 | 伝送装置及び伝送システム |
Also Published As
Publication number | Publication date |
---|---|
JP7139909B2 (ja) | 2022-09-21 |
US11418232B2 (en) | 2022-08-16 |
JP2020088495A (ja) | 2020-06-04 |
US20220014231A1 (en) | 2022-01-13 |
WO2020105430A1 (ja) | 2020-05-28 |
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