JPH06503697A - ビータビイコライザにおける状態遷移メトリックを計算するためのシステムおよび方法 - Google Patents
ビータビイコライザにおける状態遷移メトリックを計算するためのシステムおよび方法Info
- Publication number
- JPH06503697A JPH06503697A JP5507660A JP50766093A JPH06503697A JP H06503697 A JPH06503697 A JP H06503697A JP 5507660 A JP5507660 A JP 5507660A JP 50766093 A JP50766093 A JP 50766093A JP H06503697 A JPH06503697 A JP H06503697A
- Authority
- JP
- Japan
- Prior art keywords
- state transition
- signal
- symbols
- transition metric
- function
- 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.)
- Granted
Links
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
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03184—Details concerning the metric
- H04L25/03197—Details concerning the metric methods of calculation involving metrics
-
- 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
- H04L27/22—Demodulator circuits; Receiver circuits
-
- 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
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
- H04L2025/03401—PSK
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Error Detection And Correction (AREA)
Abstract
Description
Claims (8)
- 1.複数の記号からなる信号を受信するよう動作する無線受信機の一部を形成す るビタービイコライザにおける状態遷移メトリックを決定する方法であって、前 記状態遷移メトリックは2つの連続する状態の関数として定義され、前記2つの 連続する状態の内の各状態は位相シフトキーイング変調機構の可能な記号の内の 記号の集合によって規定され、 前記方法は前記2つの連続する状態の関数として規定された状態遷移メトリック を位相シフトキーイング変調機構の可能な記号の集合の内の可能な記号間の対に よる差の関数として規定される状態遷移メトリックに変換する段階を具備する、 ビクービイコライザにおける状態遷移メトリックを決定する方法。
- 2.前記位相シフトキーイング変調機構は4相位相シフトキーイング変調機構か らなる、請求の範囲第1項に記載の方法。
- 3.前記位相シフトキーイング変調機構は差分、4相位相シフトキーイング変調 機構からなる、請求の範囲第1項に記載の方法。
- 4.前記変換段階は2つの連続する段階の関数として規定される状態遷移メトリ ックを前記位相シフトキーイング変調機構の可能な記号の集合の内の可能な記号 の間の対による差分の再帰関数として規定される状態遷移メトリックに変換する 段階を含む、請求の範囲第1項に記載の方法。
- 5.前記状態遷移メトリックが前記変換段階の間に変換される再帰関数はある数 の再帰係数を含み、前記再帰関数を構成する再帰係数の数は前記2つの連続する 状態の内の各状態を規定する記号の集合を構成する記号の数に比例する、請求の 範囲第4項に記載の方法。
- 6.前記2つの連続する状態の内の各状態が規定される前記記号の集合は2つの 要素からなる、請求の範囲第5項に記載の方法。
- 7.前記位相シフトキーイング変調機構はπ/4差分4相位相シフトキーイング 変調機構からなる、請求の範囲第6項に記載の方法。
- 8.前記再帰関数は前記再帰関数を構成する再帰要素の実数部または虚数部に対 応する値を有する、請求の範囲第7項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US779,749 | 1985-09-24 | ||
US77974991A | 1991-10-21 | 1991-10-21 | |
PCT/US1992/006765 WO1993008637A1 (en) | 1991-10-21 | 1992-08-14 | System and method for calculating a state transition metric in a viterbi equalizer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06503697A true JPH06503697A (ja) | 1994-04-21 |
JP3310671B2 JP3310671B2 (ja) | 2002-08-05 |
Family
ID=25117419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50766093A Expired - Lifetime JP3310671B2 (ja) | 1991-10-21 | 1992-08-14 | ビータビイコライザにおける状態遷移メトリックを計算するためのシステムおよび方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6111923A (ja) |
JP (1) | JP3310671B2 (ja) |
CA (1) | CA2097693C (ja) |
GB (1) | GB2267632B (ja) |
MX (1) | MX9205995A (ja) |
WO (1) | WO1993008637A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2792812B2 (ja) * | 1993-07-02 | 1998-09-03 | 沖電気工業株式会社 | 最尤系列推定器 |
US5430744A (en) * | 1993-09-30 | 1995-07-04 | International Business Machines Corporation | Method and means for detecting partial response waveforms using a modified dynamic programming heuristic |
SE512115C2 (sv) * | 1997-09-08 | 2000-01-24 | Ericsson Telefon Ab L M | Testsändare samt förfarande för tillverkning av en mobil testsändare för ett mobiltelekommunikationssystem |
AT405470B (de) * | 1997-10-10 | 1999-08-25 | Kratochwil Konrad | Verfahren und anordnung zur übertragung von digitalen daten |
US6289060B1 (en) * | 2000-05-12 | 2001-09-11 | Motorola, Inc. | Method and apparatus for performing a generalized viterbi search to demodulate a sequence of symbols |
US20030067997A1 (en) * | 2001-10-04 | 2003-04-10 | Mark Kintis | Intermediate frequency signal amplitude equalizer for multichannel applications |
US7366260B2 (en) * | 2004-05-21 | 2008-04-29 | Benq Corporation | Efficient MLSE equalizer implementation |
DE102004061857A1 (de) * | 2004-09-28 | 2006-04-06 | Rohde & Schwarz Gmbh & Co. Kg | Verfahren und Vorrichtung zur Trägerfrequenzsynchronisierung eines Offset-Quadraturphasenmodulierten Signals |
KR102497232B1 (ko) * | 2018-06-18 | 2023-02-07 | 삼성전자주식회사 | 신호 수신 회로 및 그것의 동작 방법 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2087198B (en) * | 1980-10-28 | 1985-02-27 | Plessey Co Ltd | Data decoding |
US4545054A (en) * | 1983-09-09 | 1985-10-01 | Harris Corporation | Diode-configured Viterbi algorithm error correcting decoder for convolutional codes |
JPS6081925A (ja) * | 1983-10-12 | 1985-05-10 | Nec Corp | 誤り訂正装置 |
US4631737A (en) * | 1984-12-06 | 1986-12-23 | Motorola, Inc. | Self biasing direct coupled data limiter |
NO163120C (no) * | 1987-05-19 | 1990-04-04 | Sintef | Fremgangsmaate ved demodulasjon i digitale kommunikasjonssystemer med flerbane-propagasjon. |
US4885757A (en) * | 1987-06-01 | 1989-12-05 | Texas Instruments Incorporated | Digital adaptive receiver employing maximum-likelihood sequence estimation with neural networks |
GB2210163B (en) * | 1987-09-18 | 1991-06-26 | Hamamatsu Photonics Kk | Apparatus for measuring the temporal correlation of fundamental particles |
DE3744075A1 (de) * | 1987-12-24 | 1989-07-13 | Licentia Gmbh | Verfahren zur entzerrung von dispersiven, linearen oder naeherungsweise linearen kanaelen zur uebertragung von digitalen signalen sowie anordnung zum ausfuehren des verfahrens |
US4995104A (en) * | 1989-05-08 | 1991-02-19 | At&T Bell Laboratories | Interference cancelling circuit and method |
JPH03195129A (ja) * | 1989-12-22 | 1991-08-26 | Mitsubishi Electric Corp | 最尤系列推定装置 |
DE69124413T2 (de) * | 1990-03-30 | 1997-06-05 | Nippon Electric Co | Adaptives System zur Schätzung der Kanalimpulsantwort durch Maximalwahrscheinlichkeitssequenzschätzung |
US5142551A (en) * | 1991-02-28 | 1992-08-25 | Motorola, Inc. | Signal weighting system for digital receiver |
US5204874A (en) * | 1991-08-28 | 1993-04-20 | Motorola, Inc. | Method and apparatus for using orthogonal coding in a communication system |
-
1992
- 1992-08-14 CA CA002097693A patent/CA2097693C/en not_active Expired - Fee Related
- 1992-08-14 GB GB9312029A patent/GB2267632B/en not_active Expired - Lifetime
- 1992-08-14 JP JP50766093A patent/JP3310671B2/ja not_active Expired - Lifetime
- 1992-08-14 WO PCT/US1992/006765 patent/WO1993008637A1/en active Application Filing
- 1992-10-19 MX MX9205995A patent/MX9205995A/es unknown
-
1996
- 1996-02-13 US US08/600,562 patent/US6111923A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2097693C (en) | 1999-12-21 |
GB2267632B (en) | 1995-04-19 |
CA2097693A1 (en) | 1993-04-22 |
GB2267632A (en) | 1993-12-08 |
WO1993008637A1 (en) | 1993-04-29 |
US6111923A (en) | 2000-08-29 |
JP3310671B2 (ja) | 2002-08-05 |
GB9312029D0 (en) | 1993-08-18 |
MX9205995A (es) | 1993-04-01 |
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