JPH11508114A - ディジタル伝送装置の受信機のための低減された状態のシーケンス推定法によるイコライザ - Google Patents
ディジタル伝送装置の受信機のための低減された状態のシーケンス推定法によるイコライザInfo
- Publication number
- JPH11508114A JPH11508114A JP9536902A JP53690297A JPH11508114A JP H11508114 A JPH11508114 A JP H11508114A JP 9536902 A JP9536902 A JP 9536902A JP 53690297 A JP53690297 A JP 53690297A JP H11508114 A JPH11508114 A JP H11508114A
- Authority
- JP
- Japan
- Prior art keywords
- sequence
- estimation
- received
- state
- receiver
- 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
-
- 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
- H04L25/03248—Arrangements for operating in conjunction with other apparatus
- H04L25/03254—Operation with other circuitry for removing intersymbol interference
- H04L25/03261—Operation with other circuitry for removing intersymbol interference with impulse-response shortening filters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.受信機を有するディジタル伝送装置であって、前記受信機は低減された状態 のシーケンス推定方法または低減された状態の単独シンボル推定方法(11)を 実行することにより、伝送チャンネルによって歪ませられた受信信号のサンプル 値(6)のシーケンスから、伝送されたバイナリシンボルを推定するためのイコ ライザを含む受信機を有するディジタル伝送装置において、推定ないし推定量( 11)を形成するために ―最小フェーズないし最小位相代替装置(14)が、受信された順序において サンプル値(6)のシーケンス内の既知トレーニングシーケンス(27)の後に 受信されたサンプル値を歪ませ、そして ―最大フェーズ代替装置(14)が、既知トレーニングシーケンス(27)の 前に受信されたサンプル値(6)を歪ませ、そして逆の順序で処理されるように することを特徴とする、ディジタル伝送装置。 2.最小または最大フェーズ代替装置(14)を形成するために、少なくとも1 つのオールパスフィルタリング(10)が、受信されたトレーニングシーケンス (27)を基に推定された伝送チャンネルインパルスないしパルスレスポンスに 影響を及ぼすような、請求項1に記載のディジタル伝送装置。 3.低減された状態のシーケンス推定方法または低減された状態の単独シンボル 推定方法(11)を実行することによって、伝送チャンネルによって歪ませられ た受信信号のサンプル値(6)のシーケンスから、伝送されたバイナリシンボル を推定するためのイコライザを含む受信機において、推定ないし推定量(11) を形成するために、 ―最小フェーズないし最小位相代替装置(14)が、受信された順序でサンプ ル値(6)のシーケンス内の既知のトレーニングシーケンス(27)の後に受信 されたサンプル値を歪ませ、そして ―最大フェーズ代替装置(14)が、既知トレーニングシーケンス(27)の 後に受信されたサンプル値(6)を歪ませ、そして逆の順序で処理されるように することを特徴とする、受信機。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19614544A DE19614544C1 (de) | 1996-04-12 | 1996-04-12 | Entzerrer mit einem Sequenzschätzverfahren mit Zustandsreduktion für einen Empfänger in einem digitalen Übertragungssystem |
DE19614544.9 | 1996-04-12 | ||
PCT/IB1997/000361 WO1997039550A2 (en) | 1996-04-12 | 1997-04-07 | Equalizer with a sequence estimation method with state reduction for a receiver in a digital transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11508114A true JPH11508114A (ja) | 1999-07-13 |
JP4555403B2 JP4555403B2 (ja) | 2010-09-29 |
Family
ID=7791125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53690297A Expired - Lifetime JP4555403B2 (ja) | 1996-04-12 | 1997-04-07 | ディジタル伝送装置の受信機のための状態削減シーケンス推定法によるイコライザ |
Country Status (5)
Country | Link |
---|---|
US (1) | US6044111A (ja) |
EP (1) | EP0843924B1 (ja) |
JP (1) | JP4555403B2 (ja) |
DE (2) | DE19614544C1 (ja) |
WO (1) | WO1997039550A2 (ja) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2776873B1 (fr) * | 1998-03-25 | 2000-06-02 | Matra Communication | Procede de detection d'une sequence de symboles discrets a partir d'un signal d'observation, et processeur de viterbi mettant en oeuvre un tel procede |
EP0977384A1 (en) * | 1998-07-31 | 2000-02-02 | Hewlett-Packard Company | Method and apparatus for measuring spectral energy of mobile handset |
US6263467B1 (en) * | 1998-08-20 | 2001-07-17 | General Electric Company | Turbo code decoder with modified systematic symbol transition probabilities |
US6128765A (en) * | 1998-08-20 | 2000-10-03 | General Electric Company | Maximum A posterior estimator with fast sigma calculator |
JP2002525917A (ja) * | 1998-09-15 | 2002-08-13 | 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 | 改善した信号調整手段を有する伝送システム |
US6765894B1 (en) | 1999-07-05 | 2004-07-20 | Matsushita Electric Industrial Co, Ltd. | Communication terminal apparatus and base station apparatus |
US7372825B1 (en) * | 1999-07-13 | 2008-05-13 | Texas Instruments Incorporated | Wireless communications system with cycling of unique cell bit sequences in station communications |
US6608862B1 (en) * | 1999-08-20 | 2003-08-19 | Ericsson, Inc. | Method and apparatus for computing prefilter coefficients |
DE60040934D1 (de) * | 2000-04-04 | 2009-01-08 | Mitsubishi Electric Inf Tech | Basisstation zur Übertragung eines Wortes, das für die Anzahl der Spreizkodes repräsentativ ist, die den mobilen Stationen in Kommunikation mit der Basisstation zugeteilt sind |
GB2362073B (en) * | 2000-05-03 | 2003-12-17 | Siemens Ag | Equaliser and method of state reduction therefor |
US7006581B2 (en) * | 2000-05-25 | 2006-02-28 | Vigil Armando J | Method for demodulating a digital signal subjected to multipath propagation impairment and an associated receiver |
AU2001275342A1 (en) * | 2000-06-06 | 2001-12-17 | Altratek Inc. | System and method for detection and tracking of targets |
DE60022012D1 (de) * | 2000-06-08 | 2005-09-22 | St Microelectronics Nv | Entzerrer, eine Kanalumwandlung verwendend. |
US6862326B1 (en) | 2001-02-20 | 2005-03-01 | Comsys Communication & Signal Processing Ltd. | Whitening matched filter for use in a communications receiver |
US7079601B2 (en) | 2001-06-19 | 2006-07-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Efficient channel estimation in a digital communications system |
EP1284562A1 (de) | 2001-08-16 | 2003-02-19 | Alcatel | Verfahren, Empfänger und Empfangsstation zum Entzerren eines Empfangssignals |
US7221701B2 (en) * | 2002-08-28 | 2007-05-22 | Altratek, Inc. | System and method for CDMA communications |
US7187736B2 (en) * | 2003-02-13 | 2007-03-06 | Motorola Inc. | Reducing interference in a GSM communication system |
US7502426B2 (en) * | 2003-09-09 | 2009-03-10 | Interdigital Technology Corporation | Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals |
US6944245B2 (en) * | 2003-10-17 | 2005-09-13 | Motorola, Inc. | Multi-pass interference reduction in a GSM communication system |
EP1697851B1 (en) | 2003-12-01 | 2009-12-23 | Interdigital Technology Corporation | Session initiation protocol (sip) based user initiated handoff |
KR100896684B1 (ko) * | 2004-01-27 | 2009-05-14 | 삼성전자주식회사 | 수신 성능이 향상된 디지털 방송 송수신 시스템 및 그의신호처리방법 |
KR100692596B1 (ko) * | 2004-05-06 | 2007-03-13 | 삼성전자주식회사 | 수신 성능이 향상된 디지털 방송 송수신 시스템 및 그의신호처리방법 |
US7924956B2 (en) * | 2005-03-31 | 2011-04-12 | Intel Corporation | System and method for compensation of non-linear transmitter distortion |
US7831893B2 (en) * | 2007-01-20 | 2010-11-09 | Harris Corporation | Reduced state trellis decoder using programmable trellis parameters |
US7831892B2 (en) * | 2007-01-20 | 2010-11-09 | Harris Corporation | Generic, reduced state, maximum likelihood decoder |
WO2008094701A1 (en) * | 2007-01-31 | 2008-08-07 | Signal Labs, Inc. | System and methods for multistep target detection and parameter estimation |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03205926A (ja) * | 1988-12-12 | 1991-09-09 | Nippon Telegr & Teleph Corp <Ntt> | 等化器 |
JPH05327785A (ja) * | 1991-06-27 | 1993-12-10 | Hughes Aircraft Co | 自動車のデジタルセル受信装置内の等化器を基準とする最大尤度シーケンス推定 |
JPH06196968A (ja) * | 1992-09-25 | 1994-07-15 | Alcatel Nv | フィルタリング回路の透過率の決定方法及び該方法を実施するためのフィルタリング回路 |
JPH06216707A (ja) * | 1992-09-25 | 1994-08-05 | Alcatel Nv | シーケンス推定イコライザ用のフィルタ装置 |
WO1995008889A1 (en) * | 1993-09-20 | 1995-03-30 | Glenayre Electronics, Inc. | High speed simulcast system using adaptive compensation |
JPH0837479A (ja) * | 1994-07-22 | 1996-02-06 | Fujitsu Ltd | 逐次ディジタル適応等化器 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5031195A (en) * | 1989-06-05 | 1991-07-09 | International Business Machines Corporation | Fully adaptive modem receiver using whitening matched filtering |
DE4038251A1 (de) * | 1990-11-30 | 1992-06-04 | Philips Patentverwaltung | Entzerrer fuer ein digitales uebertragungssystem |
US5313495A (en) * | 1992-05-12 | 1994-05-17 | Hughes Aircraft Company | Demodulator for symbols transmitted over a cellular channel |
JP3560991B2 (ja) * | 1993-09-20 | 2004-09-02 | 株式会社東芝 | 適応型最尤系列推定装置 |
US5533063A (en) * | 1994-01-31 | 1996-07-02 | The Regents Of The University Of California | Method and apparatus for multipath channel shaping |
US5867538A (en) * | 1995-08-15 | 1999-02-02 | Hughes Electronics Corporation | Computational simplified detection of digitally modulated radio signals providing a detection of probability for each symbol |
US5887035A (en) * | 1997-10-31 | 1999-03-23 | Ericsson, Inc. | Method for joint equalization and detection of multiple user signals |
-
1996
- 1996-04-12 DE DE19614544A patent/DE19614544C1/de not_active Expired - Lifetime
-
1997
- 1997-04-07 US US08/973,023 patent/US6044111A/en not_active Expired - Lifetime
- 1997-04-07 DE DE69729709T patent/DE69729709T2/de not_active Expired - Lifetime
- 1997-04-07 WO PCT/IB1997/000361 patent/WO1997039550A2/en active IP Right Grant
- 1997-04-07 JP JP53690297A patent/JP4555403B2/ja not_active Expired - Lifetime
- 1997-04-07 EP EP97908460A patent/EP0843924B1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03205926A (ja) * | 1988-12-12 | 1991-09-09 | Nippon Telegr & Teleph Corp <Ntt> | 等化器 |
JPH05327785A (ja) * | 1991-06-27 | 1993-12-10 | Hughes Aircraft Co | 自動車のデジタルセル受信装置内の等化器を基準とする最大尤度シーケンス推定 |
JPH06196968A (ja) * | 1992-09-25 | 1994-07-15 | Alcatel Nv | フィルタリング回路の透過率の決定方法及び該方法を実施するためのフィルタリング回路 |
JPH06216707A (ja) * | 1992-09-25 | 1994-08-05 | Alcatel Nv | シーケンス推定イコライザ用のフィルタ装置 |
WO1995008889A1 (en) * | 1993-09-20 | 1995-03-30 | Glenayre Electronics, Inc. | High speed simulcast system using adaptive compensation |
JPH0837479A (ja) * | 1994-07-22 | 1996-02-06 | Fujitsu Ltd | 逐次ディジタル適応等化器 |
Also Published As
Publication number | Publication date |
---|---|
DE69729709D1 (de) | 2004-08-05 |
DE69729709T2 (de) | 2005-07-07 |
US6044111A (en) | 2000-03-28 |
JP4555403B2 (ja) | 2010-09-29 |
EP0843924A2 (en) | 1998-05-27 |
WO1997039550A2 (en) | 1997-10-23 |
DE19614544C1 (de) | 1997-08-28 |
EP0843924B1 (en) | 2004-06-30 |
WO1997039550A3 (en) | 1997-11-20 |
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