JP5980464B1 - 受信装置 - Google Patents
受信装置 Download PDFInfo
- Publication number
- JP5980464B1 JP5980464B1 JP2016531730A JP2016531730A JP5980464B1 JP 5980464 B1 JP5980464 B1 JP 5980464B1 JP 2016531730 A JP2016531730 A JP 2016531730A JP 2016531730 A JP2016531730 A JP 2016531730A JP 5980464 B1 JP5980464 B1 JP 5980464B1
- Authority
- JP
- Japan
- Prior art keywords
- signal
- rate
- resampler
- equalizer
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005314 correlation function Methods 0.000 claims abstract description 70
- 238000006243 chemical reaction Methods 0.000 claims abstract description 53
- 238000005070 sampling Methods 0.000 claims abstract description 49
- 230000003044 adaptive effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 50
- 230000008569 process Effects 0.000 claims description 31
- 230000010287 polarization Effects 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 abstract description 51
- 230000005540 biological transmission Effects 0.000 description 38
- 238000004364 calculation method Methods 0.000 description 17
- 238000004891 communication Methods 0.000 description 17
- 230000000875 corresponding effect Effects 0.000 description 15
- 230000006870 function Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 230000001360 synchronised effect Effects 0.000 description 9
- 238000012937 correction Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000012935 Averaging Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000010363 phase shift Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
-
- 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
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
- H04L25/0305—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using blind adaptation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0223—Computation saving measures; Accelerating measures
- H03H17/0227—Measures concerning the coefficients
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/06—Non-recursive filters
- H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
- H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
- H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
- H03H17/0657—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is higher than the input sampling frequency, i.e. interpolation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- 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
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
- H04L25/03044—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using fractionally spaced delay lines or combinations of fractionally integrally spaced taps
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/01—Equalisers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
- H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
- H04L7/0029—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of received data signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0219—Compensation of undesirable effects, e.g. quantisation noise, overflow
- H03H2017/0222—Phase error
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
- H03H21/0012—Digital adaptive filters
- H03H21/0043—Adaptive algorithms
- H03H2021/0056—Non-recursive least squares algorithm [LMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0038—Correction of carrier offset using an equaliser
- H04L2027/0042—Correction of carrier offset using an equaliser the equaliser providing the offset correction per se
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Description
図1は、本発明の実施の形態1にかかる受信装置の構成例を示す図である。図1に示すように、本実施の形態の受信装置100は、受信アンテナ1、RF(Radio Frequency)/IF(Intermediate Frequency)変換器2、A/D(Analog to Digital)変換器3、直交復調器4、リサンプラ5、等化器6、アップサンプラ9、相関演算器10、レート制御器11、キャリア推定器12、キャリア補償器13、位相検出器14、位相補償器15、復号器16およびクロック源17を備える受信機である。なお、A/D変換器3以降のブロックにもクロック源17からクロックが供給されるが図1では図示を省略している。なお、各ブロックへ供給されるクロックは同一のものでなくてもよく、クロック源17からのクロックに基づいてPLL(Phase Locked Loop)などにより生成されたクロックが供給されるブロックが存在してもよい。
図6は、本発明の実施の形態2にかかる受信装置の構成例を示す図である。本実施の形態の受信装置100aは、実施の形態1の受信装置100にシンボル判定器18を追加する以外は、実施の形態1の受信装置100と同様である。実施の形態1と同様の機能を有する構成要素は、実施の形態1と同一の符号を付して重複する説明を省略する。以下、実施の形態1と異なる点を説明する。
図8は、本発明の実施の形態3にかかる受信装置の構成例を示す図である。本実施の形態の受信装置100bは、受信アンテナ21−1,21−2、RF/IF変換器22−1,22−2、A/D変換器23−1,23−2、直交復調器24−1,24−2、リサンプラ25−1〜25−4、等化器26−1,26−2、アップサンプラ27−1,27−2、相関演算器28−1,28−2、レート制御器29−1,29−2、キャリア推定器30−1,30−2、キャリア補償器31−1,31−2、位相検出器32−1,32−2、位相補償器33−1,33−2、復号器34−1,34−2およびクロック源35を備える受信機である。
Claims (6)
- 受信信号のサンプリングレートを変換し、サンプリングレートの変換後の信号である第1の信号を出力するリサンプラと、
前記第1の信号を入力として適応等化処理を実施し、前記適応等化処理後の信号であり入力された信号の整数分の1のサンプリングレートの信号である第2の信号を出力する等化器と、
前記第1の信号と、前記第2の信号との間の相関関数を算出する相関演算器と、
前記相関関数に基づいて前記リサンプラにおけるサンプリングレートの変換のレート変換比率を制御するレート制御器と、
を備えることを特徴とする受信装置。 - 前記レート制御器は、相関関数の最大値に対応する遅延時間に基づいて前記レート変換比率を制御することを特徴とする請求項1に記載の受信装置。
- 前記第2の信号をアップサンプリングするアップサンプラ、
をさらに備え、
前記相関演算器は、前記第1の信号と、前記アップサンプラによるアップサンプリング後の前記第2の信号との間の相関関数を算出することを特徴とする請求項1または2に記載の受信装置。 - 前記第2の信号に対してシンボル判定を実施するシンボル判定器、
をさらに備え、
前記アップサンプラは、前記シンボル判定後の前記第2の信号をアップサンプリングすることを特徴とする請求項3に記載の受信装置。 - 第1成分と第2成分とが空間多重または偏波多重された受信信号を受信する受信装置であって、
前記第1成分および前記第2成分ごとに、
前記受信信号のうち対応する成分の信号のサンプリングレートを変換し、サンプリングレートの変換後の信号である第1の信号を出力する第1のリサンプラと、
前記受信信号のうち対応する成分以外の成分の信号のサンプリングレートを変換し、サンプリングレートの変換後の信号である他成分信号を出力する第2のリサンプラと、
前記第1の信号および前記他成分信号を入力として適応等化処理を実施し、前記適応等化処理後の信号であり入力された信号の整数分の1のサンプリングレートの信号である第2の信号を出力する等化器と、
前記第1の信号と、前記第2の信号との間の相関関数を算出する相関演算器と、
前記相関関数に基づいて前記第1および第2のリサンプラにおけるサンプリングレートの変換のレート変換比率を制御するレート制御器と、
を備えることを特徴とする受信装置。 - 前記等化器は、
前記第1の信号に対してタップ係数を用いたフィルタ処理を実施する第1のフィルタと、
前記第1のフィルタのタップ係数を制御する第1のタップ制御器と、
前記他成分信号に対してタップ係数を用いたフィルタ処理を実施する第2のフィルタと、
前記第2のフィルタのタップ係数を制御する第2のタップ制御器と、
前記第1のフィルタによるフィルタ処理後の信号と前記第2のフィルタによるフィルタ処理後の信号とを加算する加算器と、
を備え、
前記第2のフィルタのタップ係数の初期値を0とすることを特徴とする請求項5に記載の受信装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2016/052292 WO2017130314A1 (ja) | 2016-01-27 | 2016-01-27 | 受信装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP5980464B1 true JP5980464B1 (ja) | 2016-08-31 |
JPWO2017130314A1 JPWO2017130314A1 (ja) | 2018-02-01 |
Family
ID=56820012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016531730A Active JP5980464B1 (ja) | 2016-01-27 | 2016-01-27 | 受信装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10608846B2 (ja) |
EP (1) | EP3393096B1 (ja) |
JP (1) | JP5980464B1 (ja) |
WO (1) | WO2017130314A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019171551A1 (ja) * | 2018-03-08 | 2019-09-12 | 三菱電機株式会社 | 受信装置および受信信号処理方法 |
JP7074035B2 (ja) * | 2018-11-27 | 2022-05-24 | 日本電信電話株式会社 | 光受信機 |
US10972107B2 (en) | 2019-07-31 | 2021-04-06 | Apple Inc. | Serial data receiver with sampling clock skew compensation |
US11165416B2 (en) | 2019-12-03 | 2021-11-02 | Apple Inc. | Duty cycle and skew measurement and correction for differential and single-ended clock signals |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09130443A (ja) * | 1995-10-31 | 1997-05-16 | Toshiba Corp | ディジタル復調装置 |
JP2000504166A (ja) * | 1996-01-23 | 2000-04-04 | ティアナン・コミュニケーションズ・インコーポレーテッド | 微少間隔ごとに自己回復する適応等化器を有するディジタル受信機 |
US20050036572A1 (en) * | 2003-08-14 | 2005-02-17 | Khurram Muhammad | Method of rate conversion together with I-Q mismatch correction and sampler phase adjustment in direct sampling based down-conversion |
US20130243420A1 (en) * | 2012-03-19 | 2013-09-19 | Futurewei Technologies, Inc. | Method and Apparatus of Using Joint Timing Recovery for a Coherent Optical System |
US8867598B1 (en) * | 2012-08-14 | 2014-10-21 | Pmc-Sierra Us, Inc. | Timing and data recovery in feed-forward equalization |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5495203A (en) * | 1994-12-02 | 1996-02-27 | Applied Signal Technology, Inc. | Efficient QAM equalizer/demodulator with non-integer sampling |
US5838744A (en) * | 1996-10-22 | 1998-11-17 | Talx Corporation | High speed modem and method having jitter-free timing recovery |
JP3908474B2 (ja) | 2001-03-19 | 2007-04-25 | 株式会社東芝 | 適応等化器、受信装置およびタップ係数算出方法 |
US20040052228A1 (en) * | 2002-09-16 | 2004-03-18 | Jose Tellado | Method and system of frequency and time synchronization of a transceiver to signals received by the transceiver |
EP2530839A4 (en) | 2010-01-25 | 2014-03-05 | Mitsubishi Electric Corp | DEVICE FOR CONVERTING THE SCAN SPEED AND METHOD FOR CONVERTING THE SCAN SPEED |
-
2016
- 2016-01-27 EP EP16887901.3A patent/EP3393096B1/en active Active
- 2016-01-27 WO PCT/JP2016/052292 patent/WO2017130314A1/ja active Application Filing
- 2016-01-27 JP JP2016531730A patent/JP5980464B1/ja active Active
- 2016-01-27 US US16/068,185 patent/US10608846B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09130443A (ja) * | 1995-10-31 | 1997-05-16 | Toshiba Corp | ディジタル復調装置 |
JP2000504166A (ja) * | 1996-01-23 | 2000-04-04 | ティアナン・コミュニケーションズ・インコーポレーテッド | 微少間隔ごとに自己回復する適応等化器を有するディジタル受信機 |
US20050036572A1 (en) * | 2003-08-14 | 2005-02-17 | Khurram Muhammad | Method of rate conversion together with I-Q mismatch correction and sampler phase adjustment in direct sampling based down-conversion |
US20130243420A1 (en) * | 2012-03-19 | 2013-09-19 | Futurewei Technologies, Inc. | Method and Apparatus of Using Joint Timing Recovery for a Coherent Optical System |
US8867598B1 (en) * | 2012-08-14 | 2014-10-21 | Pmc-Sierra Us, Inc. | Timing and data recovery in feed-forward equalization |
Also Published As
Publication number | Publication date |
---|---|
US10608846B2 (en) | 2020-03-31 |
EP3393096A1 (en) | 2018-10-24 |
US20190020508A1 (en) | 2019-01-17 |
EP3393096B1 (en) | 2022-07-20 |
JPWO2017130314A1 (ja) | 2018-02-01 |
WO2017130314A1 (ja) | 2017-08-03 |
EP3393096A4 (en) | 2019-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2672633B1 (en) | On-the-fly compensation of sampling frequency and phase offset at side of receiver executing ultra high-speed wireless communication | |
JP5199484B2 (ja) | マルチブランチ受信機のためのシンボルタイミング回復技術 | |
CN102577183B (zh) | 用于光学传输系统的时钟恢复 | |
US5285482A (en) | Timing recovery device for receiver installation using adaptive equalization and oversampling associated with differentially coherent demodulation | |
JP5980464B1 (ja) | 受信装置 | |
WO2016209290A1 (en) | Sampling rate synchronization between transmitters and receivers | |
US20130058391A1 (en) | Timing Recovery Module and Timing Recovery Method | |
CN117040996B (zh) | 并行传输下iq延迟对齐与定时同步联合实现方法和系统 | |
EP2617134B1 (en) | Method and system for clock recovery with adaptive loop gain control | |
KR100327905B1 (ko) | 보간 필터를 사용한 타이밍 복원 병렬 처리 방법 및 그 장치 | |
JP5881453B2 (ja) | 等化装置、受信装置及び等化方法 | |
KR100390433B1 (ko) | 디지털 tv 수신기의 에러 추적 장치 | |
EP3113383A1 (en) | Wireless communication system, wireless communication device, and wireless communication method | |
JP2009100357A (ja) | 波形等化器、及び、波形等化器の制御方法 | |
JP2007235407A (ja) | 適応等化器および通信装置 | |
JPH11308157A (ja) | 適応等化器用周波数偏差補償回路 | |
KR20060098971A (ko) | 다중 안테나를 갖는 다이버시티 수신기 | |
JP2004180346A (ja) | 周波数オフセット補正装置 | |
GB2512200A (en) | Receiver, transceiver, communications system and method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TRDD | Decision of grant or rejection written | ||
A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20160621 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20160628 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20160726 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5980464 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |