JP2000501544A - 部分応答チャネルのデータ検出 - Google Patents
部分応答チャネルのデータ検出Info
- Publication number
- JP2000501544A JP2000501544A JP9520547A JP52054797A JP2000501544A JP 2000501544 A JP2000501544 A JP 2000501544A JP 9520547 A JP9520547 A JP 9520547A JP 52054797 A JP52054797 A JP 52054797A JP 2000501544 A JP2000501544 A JP 2000501544A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sequence
- output terminal
- symbol
- maximum likelihood
- 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
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/06—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
- 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
- H04L25/03267—Operation with other circuitry for removing intersymbol interference with decision feedback equalisers
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 記号シーケンスを表すデータ信号源と、 前記データ信号源に接続された複数の記号判断を含む最尤残存シーケンスを生 成する最尤シーケンスデコーダと、 前記最尤残存シーケンスに応答する判断フィードバックイコライザと、 を備えるデータ検出器。 2. 前記最尤検出器は、 複数の残存シーケンスを保持する回路から構成されるヴィテルビ・デコーダと 、 これら複数の残存シーケンスに応答する複数の入力端子と最尤残存シーケンス を生成する出力端子とを有するマルチプレクサと、 を備えている請求項1記載の検出器。 3. 前記ヴィテルビ・デコーダは、更に、 それぞれが前記複数の残存シーケンスに対応する複数の誤差量を保持する回路 と 前記マルチプレクサに対して、その出力端子に、前記最尤残存シーケンスとし て、最小の対応する誤差量を有する残存シーケンスを生成することを条件付ける 回路と、 を備えている請求項2記載の検出器。 4. 前記最尤シーケンスデコーダが、それぞれが最尤シーケンス内の複数の記 号判断を表す複数の信号を生成する回路を備え、 前記判断フィードバックイコライザが、 最尤残存シーケンス内の複数の記号判断を表す信号にそれぞれが応答する複数 の係数乗算器と、 前記複数の係数乗算器に応答する信号結合器と、 を備えている請求項1記載の検出器。 5. 前記データ信号源は、 チャネルと、 前記チャネルに接続されたフィードフォワードイコライザと、 前記フィードフォワードイコライザに接続された第1の入力端子と、前記判断 フィードバックイコライザに接続された第2の入力端子と、前記最尤シーケンス デコーダに接続された出力端子と、を有する信号結合器と、 を備えている請求項1記載の検出器。 6. 前記最尤シーケンス検出器は、サイズ制御信号に応じて前記最尤残存シー ケンスのサイズを変える回路を備えており、 前記検出器は更に、前記サイズ制御信号を生成する監視・制御ユニットを備え ている請求項1記載の検出器。 7. 最尤シーケンス検出器に接続された、誤差信号を生成する誤差評価器を更 に備えており、 前記監視・制御ユニットは、前記誤差信号に応じて前記サイズ制御信号を生成 する請求項6記載の検出器。 8. 前記最尤シーケンス検出器は、前記残存シーケンス内の前記複数の記号判 断のうちの選択された一つの記号判断を生成する記号判断出力端子を備えており 、 前記誤差評価器は、前記データ信号源と前記最尤シーケンス検出器の記号判断 出力端子とに接続されている請求項7記載の検出器。 9. 前記判断フィードバックイコライザは、誤差信号に応答する適応型最小2 乗平均判断フィードバックイコライザであり、また前記検出器は更に、 最尤シーケンス検出器に接続され、前記誤差信号を生成する誤差評価器を備え ている請求項1記載の検出器。 10. 前記データ信号源は、タイミング制御入力端子からのサンプリング・タ イミング信号に応答する信号サンプリング回路を備えており、 前記検出器は更に、最尤残存シーケンスに応答し、前記タイミング制御入力端 子に接続された位相検出器を備えている請求項1記載の検出器。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/565,608 | 1995-11-29 | ||
US08/565,608 US5757855A (en) | 1995-11-29 | 1995-11-29 | Data detection for partial response channels |
PCT/US1996/018558 WO1997020383A1 (en) | 1995-11-29 | 1996-11-29 | Data detection for partial response channels |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000501544A true JP2000501544A (ja) | 2000-02-08 |
JP4201835B2 JP4201835B2 (ja) | 2008-12-24 |
Family
ID=24259382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52054797A Expired - Lifetime JP4201835B2 (ja) | 1995-11-29 | 1996-11-29 | データ検出器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5757855A (ja) |
EP (1) | EP0864198B1 (ja) |
JP (1) | JP4201835B2 (ja) |
KR (1) | KR19990071746A (ja) |
WO (1) | WO1997020383A1 (ja) |
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1995
- 1995-11-29 US US08/565,608 patent/US5757855A/en not_active Expired - Lifetime
-
1996
- 1996-11-29 EP EP96940814A patent/EP0864198B1/en not_active Expired - Lifetime
- 1996-11-29 KR KR1019980704024A patent/KR19990071746A/ko active IP Right Grant
- 1996-11-29 JP JP52054797A patent/JP4201835B2/ja not_active Expired - Lifetime
- 1996-11-29 WO PCT/US1996/018558 patent/WO1997020383A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO1997020383A1 (en) | 1997-06-05 |
US5757855A (en) | 1998-05-26 |
EP0864198B1 (en) | 2011-08-17 |
KR19990071746A (ko) | 1999-09-27 |
JP4201835B2 (ja) | 2008-12-24 |
EP0864198A4 (en) | 2001-08-01 |
EP0864198A1 (en) | 1998-09-16 |
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