JP2001525139A - 周波数選択デジタル伝送チャネルの等化及び復号装置 - Google Patents
周波数選択デジタル伝送チャネルの等化及び復号装置Info
- Publication number
- JP2001525139A JP2001525139A JP54886998A JP54886998A JP2001525139A JP 2001525139 A JP2001525139 A JP 2001525139A JP 54886998 A JP54886998 A JP 54886998A JP 54886998 A JP54886998 A JP 54886998A JP 2001525139 A JP2001525139 A JP 2001525139A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- equalizer
- output
- module
- channel
- 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
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- 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
- H04L25/03286—Arrangements for operating in conjunction with other apparatus with channel-decoding circuitry
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
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)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Error Detection And Correction (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 等化器と重み付き出力デコーダとを有するモジュールを含む等化・復号 装置において、前記の装置は前記の型の複数のモジュールを直列に含み、前記の モジュールの各等化器がノイズ力を低下させるための少なくとも1つのトランス バーサルフィルタを有し、また1以上のランクの各モジュールが、前段のモジュ ールの処理時間に等しい量だけ遅延されたチャネルサンプル流を受ける事を特徴 とする等化・復号装置。 2. 1より大なるランクの各モジュールにおいて、各等化器は第2トランス バーサルフィルタを含み、この第2フィルタは第1フィルタの出力に存在する記 号間干渉を再構築するように設計され、また前記第2フィルタは前段のモジュー ルからの出力を受け、等化器の出力が、第1フィルタの出力から、第2フィルタ によって再構築された記号間干渉を差し引いたものに対応することを特徴とする 請求項1に記載の装置。 3. 1以上のランクのモジュールについて、チャネルサンプル流を受けるト ランスバーサルフィルタは、適合フィルタにむかって収束するフィルタであるこ とを特徴とする請求項1または2のいずれかに記載の装置。 4. それぞれのモジュールがM進−2進変換器を含むことを特徴とする請求 項1乃至3のいずれかに記載の装置。 5. それぞれのモジュールが、その重み付き出力デコーダの下流側のインタ リーバと、その等化器と重み付き出力デコーダとの間のデインタリーバとを含む ことを特徴とする請求項1乃至4のいずれかに記載の装置。 6. それぞれのモジュールが、インタリーバの上流に、また重み付き出力チ ャネルデコーダの下流に、記号の平均値の計算手段を含むことを特徴とする請求 項4または5のいずれかに記載の装置。 7. 等化器の1つまたは複数のフィルタの係数が、等化器からの出力とモジ ュールからの復号されたデータ出力との間の最小自乗誤差標準を用いた確率的グ ラジエント・アルゴリズムによって適合的に決定されることを特徴とする請求項 1乃至6のいずれかに記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/05978 | 1997-05-15 | ||
FR9705978A FR2763454B1 (fr) | 1997-05-15 | 1997-05-15 | Dispositif d'egalisation et de decodage pour un canal de transmission numerique selectif en frequence |
PCT/FR1998/000951 WO1998052329A1 (fr) | 1997-05-15 | 1998-05-13 | Dispositif d'egalisation et de decodage pour un canal de transmission numerique selectif en frequence |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001525139A true JP2001525139A (ja) | 2001-12-04 |
JP4443634B2 JP4443634B2 (ja) | 2010-03-31 |
Family
ID=9506927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54886998A Expired - Lifetime JP4443634B2 (ja) | 1997-05-15 | 1998-05-13 | 周波数選択デジタル伝送チャネルの等化及び復号装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6763076B1 (ja) |
EP (1) | EP0981881B1 (ja) |
JP (1) | JP4443634B2 (ja) |
CN (1) | CN1112011C (ja) |
DE (1) | DE69804299T2 (ja) |
FR (1) | FR2763454B1 (ja) |
WO (1) | WO1998052329A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004527944A (ja) * | 2001-03-06 | 2004-09-09 | フランス テレコム | 周波数選択チャンネル等化・復号装置 |
JP2005523647A (ja) * | 2002-04-16 | 2005-08-04 | トムソン ライセンシング ソシエテ アノニム | Hdtv受信器用連結等化器/トレリス復号器アーキテクチャ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE314770T1 (de) * | 2000-08-11 | 2006-01-15 | Mitsubishi Electric Inf Tech | Adaptive entzerrung und dekodierung für gespreizte kanalverzögerung |
US7369523B2 (en) * | 2002-02-20 | 2008-05-06 | Texas Instruments Incorporated | Data signal demodulation in a communication system |
AU2005318933B2 (en) | 2004-12-21 | 2011-04-14 | Emue Holdings Pty Ltd | Authentication device and/or method |
TWI550628B (zh) * | 2014-07-16 | 2016-09-21 | 群聯電子股份有限公司 | 解碼方法、記憶體儲存裝置及記憶體控制電路單元 |
FR3117300A1 (fr) | 2020-12-03 | 2022-06-10 | Orange | Procédé de télécommunication pour réception itérative et dispositifs correspondant |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5265125A (en) * | 1990-11-16 | 1993-11-23 | Matsushita Electric Industrial Co., Ltd. | Signal detection apparatus for detecting digital information from PCM signal |
FR2730370B1 (fr) * | 1995-02-07 | 1997-04-25 | France Telecom | Dispositif de reception de signaux numeriques a structure iterative, module et procede correspondants |
JPH10271051A (ja) * | 1997-03-11 | 1998-10-09 | Alcatel Alsthom Co General Electricite | 双方向等化を伴う送/受信装置 |
US6360369B1 (en) * | 1998-02-18 | 2002-03-19 | Paul F. Mahoney | Interference tolerant modem |
-
1997
- 1997-05-15 FR FR9705978A patent/FR2763454B1/fr not_active Expired - Lifetime
-
1998
- 1998-05-13 JP JP54886998A patent/JP4443634B2/ja not_active Expired - Lifetime
- 1998-05-13 EP EP98924426A patent/EP0981881B1/fr not_active Expired - Lifetime
- 1998-05-13 CN CN98805136A patent/CN1112011C/zh not_active Expired - Lifetime
- 1998-05-13 US US09/423,994 patent/US6763076B1/en not_active Expired - Lifetime
- 1998-05-13 WO PCT/FR1998/000951 patent/WO1998052329A1/fr active IP Right Grant
- 1998-05-13 DE DE69804299T patent/DE69804299T2/de not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004527944A (ja) * | 2001-03-06 | 2004-09-09 | フランス テレコム | 周波数選択チャンネル等化・復号装置 |
JP2005523647A (ja) * | 2002-04-16 | 2005-08-04 | トムソン ライセンシング ソシエテ アノニム | Hdtv受信器用連結等化器/トレリス復号器アーキテクチャ |
JP2011035919A (ja) * | 2002-04-16 | 2011-02-17 | Thomson Licensing | Hdtv受信器用連結等化器/トレリス復号器アーキテクチャ |
JP2013150350A (ja) * | 2002-04-16 | 2013-08-01 | Thomson Licensing | Hdtv受信器用連結等化器/トレリス復号器アーキテクチャ |
Also Published As
Publication number | Publication date |
---|---|
FR2763454A1 (fr) | 1998-11-20 |
WO1998052329A1 (fr) | 1998-11-19 |
EP0981881B1 (fr) | 2002-03-20 |
DE69804299T2 (de) | 2002-11-14 |
FR2763454B1 (fr) | 1999-08-06 |
JP4443634B2 (ja) | 2010-03-31 |
CN1112011C (zh) | 2003-06-18 |
DE69804299D1 (de) | 2002-04-25 |
CN1256834A (zh) | 2000-06-14 |
US6763076B1 (en) | 2004-07-13 |
EP0981881A1 (fr) | 2000-03-01 |
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