JP6102262B2 - 信号処理装置および信号処理方法 - Google Patents
信号処理装置および信号処理方法 Download PDFInfo
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- JP6102262B2 JP6102262B2 JP2013000310A JP2013000310A JP6102262B2 JP 6102262 B2 JP6102262 B2 JP 6102262B2 JP 2013000310 A JP2013000310 A JP 2013000310A JP 2013000310 A JP2013000310 A JP 2013000310A JP 6102262 B2 JP6102262 B2 JP 6102262B2
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- Japan
- Prior art keywords
- signal
- signal processing
- input
- tap coefficient
- output
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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
- H04B10/548—Phase or frequency modulation
- H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
- H04B10/5561—Digital phase modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
- H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
11 信号処理部
12 マッピング器
13 タップ係数セレクタ
14 加算器
15〜18 選択器
19 乗算器
21 符号変換器
22 選択器
Claims (4)
- タップ係数に1/√2を乗算することによってマッピング係数を得る乗算器と、
デジタルの入力信号を基に、QPSK変調点に対応して正または負を表す信号を選択する選択器と、
前記選択器が選択した信号を基に、前記乗算器が得たマッピング係数および当該マッピング係数を極性反転したもののいずれかを出力する出力器と、を備えることを特徴とする信号処理装置。 - 順次入力される前記入力信号に対応して複数のタップ係数が設けられ、
前記乗算器および前記出力器は、前記複数のタップ係数と同数設けられ、
前記複数の出力器によって出力された値を加算する加算器を備えることを特徴とする請求項1記載の信号処理装置。 - タップ係数に1/√2を乗算することによってマッピング係数を得る工程と、
デジタルの入力信号を基に、QPSK変調点に対応して正または負を表す信号を選択する工程と、
前記選択する工程において選択した信号を基に、前記マッピング係数および当該マッピング係数を極性反転したもののいずれかを出力する工程と、を含むことを特徴とする信号処理方法。 - 順次入力される前記入力信号に対応して複数のタップ係数が設けられ、
前記マッピング係数を得る工程および前記出力する工程は、前記複数のタップ係数と同数回行われ、
前記出力する工程において出力された各値を加算する工程を含むことを特徴とする請求項3記載の信号処理方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013000310A JP6102262B2 (ja) | 2013-01-07 | 2013-01-07 | 信号処理装置および信号処理方法 |
US14/046,298 US9143239B2 (en) | 2013-01-07 | 2013-10-04 | Signal processing device, signal processing method, and communication device |
Applications Claiming Priority (1)
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JP2013000310A JP6102262B2 (ja) | 2013-01-07 | 2013-01-07 | 信号処理装置および信号処理方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014132714A JP2014132714A (ja) | 2014-07-17 |
JP6102262B2 true JP6102262B2 (ja) | 2017-03-29 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2013000310A Expired - Fee Related JP6102262B2 (ja) | 2013-01-07 | 2013-01-07 | 信号処理装置および信号処理方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9143239B2 (ja) |
JP (1) | JP6102262B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7420049B2 (ja) | 2020-10-26 | 2024-01-23 | 株式会社島津製作所 | 自動試料注入装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10727951B2 (en) | 2016-07-20 | 2020-07-28 | Nokia Of America Corporation | Low-complexity constellation shaping |
US11196594B2 (en) | 2019-02-28 | 2021-12-07 | Nokia Solutions And Networks Oy | Probabilistic signal shaping using multiple codebooks |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106019A (en) * | 1972-10-05 | 1978-08-08 | Hughes Aircraft Company | Range resolving doppler radar system |
JPH0773288B2 (ja) * | 1989-11-10 | 1995-08-02 | 日本電信電話株式会社 | ディジタル変調回路 |
JP2964172B2 (ja) * | 1991-03-08 | 1999-10-18 | 富士通株式会社 | Dctマトリクス演算回路 |
JPH0750693A (ja) | 1993-08-05 | 1995-02-21 | Hitachi Ltd | π/4シフトQPSK変調器、並びにそれを用いた通信装置 |
JP2772225B2 (ja) * | 1993-09-16 | 1998-07-02 | 日本電気株式会社 | ディジタルフィルタ回路 |
KR0171029B1 (ko) * | 1996-06-28 | 1999-03-30 | 정선종 | 파이/4 전이 큐.피.에스.케이(qpsk) 변조기용 펄스 성형 필터 |
US6373859B1 (en) * | 1996-09-10 | 2002-04-16 | Hewlett-Packard Company | Methods and apparatus for encoding and decoding data |
DE19946722A1 (de) * | 1999-09-29 | 2001-04-05 | Infineon Technologies Ag | Einrichtung und Verfahren zur spektralen Formung eines Sendesignals in einem Funksender |
-
2013
- 2013-01-07 JP JP2013000310A patent/JP6102262B2/ja not_active Expired - Fee Related
- 2013-10-04 US US14/046,298 patent/US9143239B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7420049B2 (ja) | 2020-10-26 | 2024-01-23 | 株式会社島津製作所 | 自動試料注入装置 |
Also Published As
Publication number | Publication date |
---|---|
US20140193163A1 (en) | 2014-07-10 |
JP2014132714A (ja) | 2014-07-17 |
US9143239B2 (en) | 2015-09-22 |
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