JP7186788B2 - 光通信における次元変換 - Google Patents
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- 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
- H04B10/2543—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to fibre non-linearities, e.g. Kerr effect
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- 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
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/614—Coherent receivers comprising one or more polarization beam splitters, e.g. polarization multiplexed [PolMux] X-PSK coherent receivers, polarization diversity heterodyne coherent receivers
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- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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- 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
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
- H04B10/541—Digital intensity or amplitude modulation
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- 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
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/616—Details of the electronic signal processing in coherent optical receivers
- H04B10/6165—Estimation of the phase of the received optical signal, phase error estimation or phase error correction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/06—Polarisation multiplex systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
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- 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
- H04B10/40—Transceivers
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- 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
- H04B10/50—Transmitters
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- 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
- H04B10/60—Receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/203—Details of error rate determination, e.g. BER, FER or WER
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
- H04L2025/03611—Iterative algorithms
- H04L2025/03636—Algorithms using least mean square [LMS]
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Description
である。整数の組のような2値データではない値に対しては、例えば、特定の整数値の確率を他に可能性のある整数値の確率の合計値で割った値の対数のような他の数値を使用することができる。
Claims (15)
- 偏光ビームスプリッタ(344)、光ハイブリッド(358)、光検出器(362)、アナログ-デジタル変換器(324,326,328,330)、及びプロセッサ(314)を含む光受信器(102,300)で行われる方法であって、
光受信器と光送信器(102,200)との間で確立される光通信チャネル(104)を介して光信号(360)を受信し、該受信された光信号は、前記光送信器で生成された変調光信号が劣化したものを含み、
前記偏光ビームスプリッタによって前記受信された光信号を偏波成分(354,356)に分離し、
前記光ハイブリッドによって前記偏波成分を処理して処理済み成分(346,348,350,352)を生成し、
前記光検出器によって前記処理済み成分を受信アナログ信号(332,334,336,338)に変換し、
前記アナログ-デジタル変換器によって前記受信アナログ信号を前記受信光信号の複数の第1次元に対応する受信デジタル信号(316,318,320,322)に変換し、前記第1次元は、前記光送信器で変調された光信号キャリア(242)の次元に対応してマルチビットシンボル(212)を表し、前記第1次元は、2以上のタイムスロットにわたって分配され、
前記プロセッサによって前記受信デジタル信号に逆次元変換を適用して(806)複数の第2次元に対応する初期デジタル駆動信号推定値(370,372,374,376)を生成し、
前記プロセッサにより前記初期デジタル駆動信号推定値を処理して(808)前記マルチビットシンボルの推定値を生成する、
方法。 - 前記受信デジタル信号に対する前記逆次元変換の適用は、前記受信デジタル信号における信号劣化を平均化し、前記信号劣化は、雑音、非線形効果、偏波依存性損失又は利得(PDL)、及びアナログ不完全性のうち1つ以上によって生じる、請求項1に記載された方法。
- 前記逆次元変換は、実質的に線形で実質的にユニタリな行列を含む、請求項1又は請求項2に記載の方法。
- 前記光通信チャネルにおける線形インペアメントを補償するための適応等化回路を用いて前記受信光信号を処理する、請求項1から3のいずれか一項に記載の方法。
- プロセッサ(214)、デジタル-アナログ変換器(224,226,228,230)、電気光学変調器(250,252)、及びビームコンバイナ(258)を含む光送信器(102,200)で行われる方法であって、
前記プロセッサによってマルチビットシンボル(212)を表す初期デジタル駆動信号を生成し(702)、
前記プロセッサによって前記初期デジタル駆動信号から変換デジタル駆動信号(216,218,220,222)を生成し(704)、前記変換デジタル駆動信号は、光信号キャリア(242)の複数の第1次元を用いてそれぞれのマルチビットシンボルを表すように構成され、前記第1次元は、2以上の別個のタイムスロットにわたって分配され、前記初期デジタル駆動信号は、前記光信号キャリアの複数の第2次元を用いてそれぞれのマルチビットシンボルを表すように構成され、前記第2次元は前記第1次元とは異なり、
前記光送信器と光受信器(102,300)との間で確立される光通信チャネル(104)を介した伝送のために光信号(260)を生成し(706)、
前記デジタル-アナログ変換器によって前記変換デジタル駆動信号をそれぞれのアナログ信号(232,234,236,238)に変換し、
前記電気光学変調器によって前記アナログ信号を用いて前記光信号キャリアの偏波成分(246,248)を変調して変調偏波信号(254,256)を生成し、
前記ビームコンバイナによって前記変調偏波信号を結合して前記光信号を形成する、
方法。 - 前記変換デジタル駆動信号は、前記初期デジタル駆動信号に次元変換を適用することにより生成される、請求項5に記載の方法。
- 前記次元変換は、実質的に線形で実質的にユニタリな行列を含む、請求項6に記載の方法。
- 前記変換デジタル駆動信号は、前記初期デジタル駆動信号からルックアップテーブルを用いて生成される、請求項5に記載の方法。
- さらに、前記プロセッサによって前記変換デジタル駆動信号に周波数領域処理を適用する(906)、請求項5から8のいずれか一項に記載の方法。
- 前記複数の第2次元の数は、前記複数の第1次元の数より少ない、請求項1から9のいずれか一項に記載の方法。
- 前記2以上のタイムスロットは、非連続的である、請求項1から10のいずれか一項に記載の方法。
- 前記第1次元は、2つの偏波を含む、請求項1から11のいずれか一項に記載の方法。
- 前記第1次元は、少なくとも1つの偏波の同相成分(I)及び直交成分(Q)を含む、請求項1から12のいずれか一項に記載の方法。
- 偏光ビームスプリッタ(344)、光ハイブリッド(358)、光検出器(362)、アナログ-デジタル変換器(324,326,328,330)、及びプロセッサ(314)を含む光受信器(102,300)であって、前記光受信器は、請求項1から4のいずれか一項に記載の方法又は請求項1から4のいずれか一項に従属する請求項10から13のいずれか一項に記載の方法を実施するように構成される、光受信器。
- プロセッサ(214)、デジタル-アナログ変換器(224,226,228,230)、電気光学変調器(250,252)、及びビームコンバイナ(258)を含む光送信器(102,200)であって、前記光送信器は、請求項5から9のいずれか一項に記載の方法又は請求項5から9のいずれか一項に従属する請求項10から13のいずれか一項に記載の方法を実施するように構成される、光送信器。
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7203236B2 (ja) | 2019-09-02 | 2023-01-12 | 三菱電機株式会社 | 直流配電システム |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107277521B (zh) * | 2016-09-06 | 2020-11-27 | 芯原微电子(北京)有限公司 | 一种基于hevc视频编码的tu树状结构抉择算法 |
US11251878B2 (en) | 2018-02-07 | 2022-02-15 | Infinera Corporation | Independently routable digital subcarriers for optical communication networks |
US11368228B2 (en) | 2018-04-13 | 2022-06-21 | Infinera Corporation | Apparatuses and methods for digital subcarrier parameter modifications for optical communication networks |
US11095389B2 (en) | 2018-07-12 | 2021-08-17 | Infiriera Corporation | Subcarrier based data center network architecture |
US11258528B2 (en) | 2019-09-22 | 2022-02-22 | Infinera Corporation | Frequency division multiple access optical subcarriers |
US11075694B2 (en) | 2019-03-04 | 2021-07-27 | Infinera Corporation | Frequency division multiple access optical subcarriers |
US11336369B2 (en) | 2019-03-22 | 2022-05-17 | Infinera Corporation | Framework for handling signal integrity using ASE in optical networks |
US11032020B2 (en) | 2019-04-19 | 2021-06-08 | Infiriera Corporation | Synchronization for subcarrier communication |
US10972184B2 (en) | 2019-05-07 | 2021-04-06 | Infinera Corporation | Bidirectional optical communications |
US11296812B2 (en) | 2019-05-14 | 2022-04-05 | Infinera Corporation | Out-of-band communication channel for subcarrier-based optical communication systems |
US11476966B2 (en) | 2019-05-14 | 2022-10-18 | Infinera Corporation | Out-of-band communication channel for subcarrier-based optical communication systems |
US11190291B2 (en) | 2019-05-14 | 2021-11-30 | Infinera Corporation | Out-of-band communication channel for subcarrier-based optical communication systems |
US11239935B2 (en) * | 2019-05-14 | 2022-02-01 | Infinera Corporation | Out-of-band communication channel for subcarrier-based optical communication systems |
US11088764B2 (en) * | 2019-05-14 | 2021-08-10 | Infinera Corporation | Out-of-band communication channel for sub-carrier-based optical communication systems |
US11489613B2 (en) | 2019-05-14 | 2022-11-01 | Infinera Corporation | Out-of-band communication channel for subcarrier-based optical communication systems |
US11470019B2 (en) | 2019-09-05 | 2022-10-11 | Infinera Corporation | Dynamically switching queueing schemes for network switches |
WO2021072409A1 (en) | 2019-10-10 | 2021-04-15 | Tulasi Veguru | Network switches systems for optical communications networks |
US12081269B2 (en) | 2019-10-10 | 2024-09-03 | Infinera Corporation | Hub-leaf laser synchronization |
AU2020364088A1 (en) | 2019-10-10 | 2022-05-12 | Infinera Corporation | Optical subcarrier dual-path protection and restoration for optical communications networks |
EP3935762A1 (en) | 2019-10-31 | 2022-01-12 | Ciena Corporation | Asymmetric direct detection of optical signals |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011517222A (ja) | 2008-04-11 | 2011-05-26 | アルカテル−ルーセント | 増加された数の偏波状態を有する変調方式 |
JP2013153719A (ja) | 2012-01-31 | 2013-08-15 | House Foods Corp | 食品試料中のアミラーゼ活性の分析法 |
JP2016144199A (ja) | 2015-02-05 | 2016-08-08 | 日本電信電話株式会社 | 光送信機及び光送信方法 |
JP2016121341A5 (ja) | 2015-12-08 | 2016-08-18 | ||
JP2016152556A (ja) | 2015-02-18 | 2016-08-22 | 富士通株式会社 | 光伝送装置、光伝送システム、及び、偏波依存損失モニタ |
JP2016527552A (ja) | 2013-07-31 | 2016-09-08 | 日本電気株式会社 | 信号生成装置及び信号生成方法 |
JP2017034513A (ja) | 2015-08-03 | 2017-02-09 | 富士通株式会社 | 光受信装置及び信号処理方法 |
WO2017216836A1 (ja) | 2016-06-13 | 2017-12-21 | 三菱電機株式会社 | 光伝送方法及び光伝送システム |
Family Cites Families (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3388330A (en) | 1965-03-19 | 1968-06-11 | Bell Telephone Labor Inc | Partial response multilevel data system |
US3824597A (en) * | 1970-11-09 | 1974-07-16 | Data Transmission Co | Data transmission network |
US3823401A (en) * | 1972-10-04 | 1974-07-09 | Data Transmission Co | Synchronous data transmission network |
US7305183B2 (en) | 2001-08-27 | 2007-12-04 | Nortel Networks Limited | Measurement of polarization dependent loss in an optical transmission system |
US7382985B2 (en) | 2002-12-02 | 2008-06-03 | Nortel Networks Limited | Electrical domain mitigation of polarization dependent effects in an optical communications system |
GB0323211D0 (en) * | 2003-10-03 | 2003-11-05 | Toshiba Res Europ Ltd | Signal decoding methods and apparatus |
US7532822B2 (en) | 2005-02-28 | 2009-05-12 | Nortel Networks Limited | Clock recovery from an optical signal with polarization impairments |
US7606498B1 (en) * | 2005-10-21 | 2009-10-20 | Nortel Networks Limited | Carrier recovery in a coherent optical receiver |
US8412227B2 (en) * | 2007-05-18 | 2013-04-02 | Qualcomm Incorporated | Positioning using enhanced pilot signal |
US8005368B2 (en) * | 2007-12-05 | 2011-08-23 | Ciena Corporation | Signal equalizer in a coherent optical receiver |
US8718491B2 (en) | 2009-10-29 | 2014-05-06 | Ciena Corporation | Soft decoding of data in a coherent optical receiver |
US9203682B2 (en) * | 2010-09-07 | 2015-12-01 | Alcatel Lucent | Frequency-dependent I/Q-signal imbalance correction coherent optical transceivers |
US8682181B2 (en) * | 2011-03-05 | 2014-03-25 | Alcatel Lucent | System, method, and apparatus for high-sensitivity optical detection |
CN102761373A (zh) * | 2011-04-28 | 2012-10-31 | 北京邮电大学 | 一种实现相干接收的高速大容量无源光网络系统及方法 |
US9294315B2 (en) * | 2011-05-26 | 2016-03-22 | Cohere Technologies, Inc. | Modulation and equalization in an orthonormal time-frequency shifting communications system |
US9112614B2 (en) * | 2012-03-02 | 2015-08-18 | Alcatel Lucent | Correction of a local-oscillator phase error in a coherent optical receiver |
WO2013153719A1 (ja) * | 2012-04-10 | 2013-10-17 | 日本電気株式会社 | 光送信装置、光通信システム、光受信装置、光送信装置の調整方法、光送信方法、及び光受信方法 |
US9912507B2 (en) * | 2012-06-25 | 2018-03-06 | Cohere Technologies, Inc. | Orthogonal time frequency space communication system compatible with OFDM |
US8983294B2 (en) * | 2012-06-29 | 2015-03-17 | Alcatel Lucent | Forward error correction for an optical transport system |
US8761600B2 (en) * | 2012-09-14 | 2014-06-24 | Fujitsu Limited | In-band supervisory data modulation |
US8867926B2 (en) * | 2012-09-15 | 2014-10-21 | Alcatel Lucent | Optical communication of interleaved symbols associated with polarizations |
US9325427B1 (en) * | 2012-10-31 | 2016-04-26 | Ciena Corporation | Maximum likelihood decoding |
US9143238B2 (en) * | 2012-11-12 | 2015-09-22 | Ciena Corporation | Optical modulation schemes having reduced nonlinear optical transmission impairments |
US9264145B2 (en) * | 2013-05-31 | 2016-02-16 | Alcatel Lucent | Optical receiver having a chromatic-dispersion compensation module with a multibranch filter-bank structure |
US9148247B2 (en) * | 2013-09-20 | 2015-09-29 | Alcatel Lucent | Frequency-diversity MIMO processing for optical transmission |
JP6213287B2 (ja) * | 2014-02-13 | 2017-10-18 | 富士通株式会社 | 光伝送装置および光伝送装置の信号処理方法 |
JP6303691B2 (ja) * | 2014-03-26 | 2018-04-04 | 富士通株式会社 | 偏波状態検出装置及び方法、並びに、光通信システム、光送信器及び光受信器 |
US20150372764A1 (en) * | 2014-06-19 | 2015-12-24 | Alcatel-Lucent Usa Inc. | Optical receiver having an equalization filter with an integrated signal re-sampler |
JP6178389B2 (ja) | 2014-12-25 | 2017-08-09 | デクセリアルズ株式会社 | 熱伝導シートの製造方法、熱伝導シート、及び半導体装置 |
WO2016121341A1 (ja) * | 2015-01-28 | 2016-08-04 | 日本電気株式会社 | 光送信器、光通信システム、および光通信方法 |
US9553675B2 (en) * | 2015-03-03 | 2017-01-24 | Infinera Corporation | Frequency domain coded modulation with polarization interleaving for fiber nonlinearity mitigation in digital sub-carrier coherent optical communication systems |
US9906309B2 (en) * | 2015-03-31 | 2018-02-27 | Infinera Corporation | System and method for determining nonlinear mitigation perturbative distortion coefficients using a received optical signal |
US9853734B1 (en) * | 2015-04-16 | 2017-12-26 | Inphi Corporation | Apparatus and methods for digital signal constellation transformation |
US9749058B2 (en) * | 2015-06-19 | 2017-08-29 | Ciena Corporation | Nonlinear tolerant optical modulation formats at high spectral efficiency |
EP3244561B1 (en) * | 2016-05-13 | 2019-08-28 | Institut Mines-Telecom | Space-time coding methods and devices for optical mimo systems |
WO2018090185A1 (zh) * | 2016-11-15 | 2018-05-24 | 华为技术有限公司 | 一种数据调制方法以及编码器 |
US10574448B2 (en) * | 2017-02-16 | 2020-02-25 | Nec Corporation | Multidimensional coded modulation for wireless communications with physical layer security |
US10742328B2 (en) * | 2017-10-09 | 2020-08-11 | Infinera Corporation | Individually routable digital subcarriers |
US10979270B2 (en) * | 2018-03-09 | 2021-04-13 | Infinera Corporation | Scalable synthesis of signals of high symbol rate using lower symbol rate DSPS |
-
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Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011517222A (ja) | 2008-04-11 | 2011-05-26 | アルカテル−ルーセント | 増加された数の偏波状態を有する変調方式 |
JP2013153719A (ja) | 2012-01-31 | 2013-08-15 | House Foods Corp | 食品試料中のアミラーゼ活性の分析法 |
JP2016527552A (ja) | 2013-07-31 | 2016-09-08 | 日本電気株式会社 | 信号生成装置及び信号生成方法 |
JP2016144199A (ja) | 2015-02-05 | 2016-08-08 | 日本電信電話株式会社 | 光送信機及び光送信方法 |
JP2016152556A (ja) | 2015-02-18 | 2016-08-22 | 富士通株式会社 | 光伝送装置、光伝送システム、及び、偏波依存損失モニタ |
JP2017034513A (ja) | 2015-08-03 | 2017-02-09 | 富士通株式会社 | 光受信装置及び信号処理方法 |
JP2016121341A5 (ja) | 2015-12-08 | 2016-08-18 | ||
WO2017216836A1 (ja) | 2016-06-13 | 2017-12-21 | 三菱電機株式会社 | 光伝送方法及び光伝送システム |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7203236B2 (ja) | 2019-09-02 | 2023-01-12 | 三菱電機株式会社 | 直流配電システム |
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