JPH11502097A - 通信システムにおけるコヒーレント・チャネル推定のための方法および装置 - Google Patents
通信システムにおけるコヒーレント・チャネル推定のための方法および装置Info
- Publication number
- JPH11502097A JPH11502097A JP9525178A JP52517897A JPH11502097A JP H11502097 A JPH11502097 A JP H11502097A JP 9525178 A JP9525178 A JP 9525178A JP 52517897 A JP52517897 A JP 52517897A JP H11502097 A JPH11502097 A JP H11502097A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- coherent
- quadrature
- demodulated
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
-
- 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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
- H04L25/0236—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols using estimation of the other symbols
-
- 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
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
- H04L25/0214—Channel estimation of impulse response of a single coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Error Detection And Correction (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.通信システムにおけるコヒーレント・チャネル推定の方法であって: (a)符号化信号を受信する段階; (b)前記符号化信号から複素チャネル推定値を生成する段階; (c)前記複素チャネル推定値と、前記符号化信号とを合成して、コヒーレン ト復調信号を生成する段階;および (d)前記コヒーレント復調信号のバージョンを復号して、符号化前の前記符 号化信号の推定値を生成する段階; によって構成されることを特徴とする方法。 2.符号化信号を受信する前記段階は、レーキ受信機によって実行されることを 特徴とする請求項1記載の方法。 3.複素チャネル推定値を生成する前記段階は、チャネル推定器によって実行さ れることを特徴とする請求項1記載の方法。 4.前記コヒーレント復調信号の前記バージョンは、前記コヒーレント復調信号 の実数部をさらに含んで構成されることを特徴とする請求項1記載の方法。 5.前記チャネル推定器の機能は: (a)前記符号化信号を、同相および直交デジタル信号成分に処理する段階; (b)前記同相および直交デジタル信号成分から、直交 復調された同相デジタル信号と、直交復調された直交デジタル信号とを生成する 段階; (c)前記直交復調された同相デジタル信号および直交復調された直交デジタ ル信号から、同相複素チャネル推定値および直交複素チャネル推定値を生成する 段階; (d)前記同相および直交チャネル推定値から、複素コヒーレント直交復調信 号を生成する段階; (e)前記複素コヒーレント直交復調信号から、実数コヒーレント直交復調信 号を生成する段階; (f)総合コヒーレント直交復調信号を復号して、符号化前の信号の推定値を 生成する段階; によって構成されることを特徴とする請求項3記載の方法。 6.通信システムにおけるコヒーレントチャネル推定のための装置であって: (a)符号化信号を受信する受信機; (b)前記符号化信号から複素チャネル推定値を生成するプロセッサ; (c)前記複素チャネル推定値と前記符号化信号とを合成して、コヒーレント 復調信号を生成する合成器;および (d)前記コヒーレント復調信号のバージョンを復号して、符号化前の前記符 号化信号の推定値を生成するデコーダ; によって構成されることを特徴とする装置。 7.前記コヒーレント復調信号の前記バージョンは、前記コヒーレント復調信号 の実数部をさらに含んで構成されることを特徴とする請求項6記載の装置。 8.復号は、複数のコヒーレント復調信号の実数部の総合を復号することをさら に含んで構成されることを特徴とする請求項6記載の装置。 9.前記装置の機能は、超LSI(VLSI)集積回路または特定用途向け集積 回路(ASIC)内で実行できることを特徴とする請求項6記載の装置。 10.前記デコーダは、最尤シーケンス推定器(MLSE)デコーダをさらに含 んで構成されることを特徴とする請求項6記載の装置。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US582,856 | 1996-01-04 | ||
US08/582,856 US5754599A (en) | 1996-01-04 | 1996-01-04 | Method and apparatus for coherent channel estimation in a communication system |
US08/582,856 | 1996-01-04 | ||
PCT/US1996/017285 WO1997025774A1 (en) | 1996-01-04 | 1996-10-28 | Method and apparatus for coherent channel estimation in a communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11502097A true JPH11502097A (ja) | 1999-02-16 |
JP3275079B2 JP3275079B2 (ja) | 2002-04-15 |
Family
ID=24330758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52517897A Expired - Fee Related JP3275079B2 (ja) | 1996-01-04 | 1996-10-28 | 通信システムにおけるコヒーレント・チャネル推定のための方法および装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5754599A (ja) |
JP (1) | JP3275079B2 (ja) |
KR (1) | KR100294173B1 (ja) |
CN (1) | CN1077353C (ja) |
BR (1) | BR9607810A (ja) |
WO (1) | WO1997025774A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003005596A1 (fr) * | 2001-07-02 | 2003-01-16 | Kawasaki Microelectronics, Inc. | Appareil de reception amrc et procede a decision souple des symboles de codes de correction d'erreur |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE503522C2 (sv) * | 1994-10-31 | 1996-07-01 | Ericsson Telefon Ab L M | Förfarande och anordning för kanalestimering |
FR2751499B1 (fr) * | 1996-07-16 | 1998-08-28 | Duponteil Daniel | Procede de demodulation differentielle numerique |
JPH10190626A (ja) * | 1996-12-27 | 1998-07-21 | Matsushita Electric Ind Co Ltd | Cdma受信装置 |
US5940439A (en) * | 1997-02-26 | 1999-08-17 | Motorola Inc. | Method and apparatus for adaptive rate communication system |
US6539050B1 (en) | 1997-06-26 | 2003-03-25 | Hughes Electronics Corporation | Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission |
US6510147B1 (en) | 1997-07-15 | 2003-01-21 | Hughes Electronics Corporation | Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals |
US6396822B1 (en) * | 1997-07-15 | 2002-05-28 | Hughes Electronics Corporation | Method and apparatus for encoding data for transmission in a communication system |
US6295311B1 (en) * | 1997-11-07 | 2001-09-25 | Hughes Electronics Corporation | Method and apparatus for compensating for phase differences in received signals |
US6141388A (en) * | 1998-03-11 | 2000-10-31 | Ericsson Inc. | Received signal quality determination method and systems for convolutionally encoded communication channels |
US6487255B1 (en) * | 1998-08-31 | 2002-11-26 | Ericsson Inc. | Information generation for coherent demodulation of differentially encoded signals |
US6324395B1 (en) | 1998-11-18 | 2001-11-27 | Ericsson Inc. | Apparatus and methods for assigning spectral and non-spectral resource charges in wireless communications systems |
US6320843B1 (en) | 1998-11-18 | 2001-11-20 | Ericsson Inc. | Wireless communications systems with standard and robust services and methods of operation thereof |
US6332006B1 (en) * | 1998-11-18 | 2001-12-18 | Ericsson Inc. | Apparatus and methods for providing high-penetration messaging in wireless communications systems |
US6654429B1 (en) | 1998-12-31 | 2003-11-25 | At&T Corp. | Pilot-aided channel estimation for OFDM in wireless systems |
US6405039B1 (en) | 1999-04-20 | 2002-06-11 | Ericsson Inc. | Apparatus and methods for allocation of high-penetration services in wireless communications systems |
US6628945B1 (en) | 1999-04-20 | 2003-09-30 | Ericsson Inc. | Apparatus and methods for high-penetration random access in wireless communications systems |
US6614857B1 (en) * | 1999-04-23 | 2003-09-02 | Lucent Technologies Inc. | Iterative channel estimation and compensation based thereon |
DE19922184A1 (de) * | 1999-05-12 | 2000-11-23 | Siemens Ag | Verfahren zur Schätzung von Kanalparametern |
FR2805689B1 (fr) | 2000-02-29 | 2003-07-04 | Thomson Csf | Procede et dispositif d'estimation d'un canal de propagation |
US6801163B2 (en) | 2001-05-04 | 2004-10-05 | Lockheed Martin Corporation | System and method for wideband pre-detection signal processing for passive coherent location applications |
EP1384095B1 (en) * | 2001-05-04 | 2009-10-14 | Lockheed Martin Corporation | System and method for measurement domain data association in passive coherent location applications |
US6940914B1 (en) * | 2001-06-11 | 2005-09-06 | Cingular Wireless Ii, Llc | Turbo channel estimation for OFDM systems |
JP2003283375A (ja) * | 2002-03-22 | 2003-10-03 | Toshiba Corp | Cdm受信装置 |
CN1739248A (zh) * | 2003-10-29 | 2006-02-22 | 松下电器产业株式会社 | 接收装置和接收方法 |
US8050865B2 (en) * | 2008-10-31 | 2011-11-01 | Baker Hughes Incorporated | System and method for measuring resistivity parameters of an earth formation |
CN110752892B (zh) * | 2019-09-10 | 2022-04-08 | 航天恒星科技有限公司 | M进制正交调制与m进制信道编码信号的接收处理方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4914699A (en) * | 1988-10-11 | 1990-04-03 | Itt Corporation | High frequency anti-jam communication system terminal |
US5164959A (en) * | 1991-01-22 | 1992-11-17 | Hughes Aircraft Company | Digital equalization method and apparatus |
US5400366A (en) * | 1992-07-09 | 1995-03-21 | Fujitsu Limited | Quasi-synchronous detection and demodulation circuit and frequency discriminator used for the same |
US5298811A (en) * | 1992-08-03 | 1994-03-29 | Analog Devices, Inc. | Synchronous logarithmic amplifier |
US5544156A (en) * | 1994-04-29 | 1996-08-06 | Telefonaktiebolaget Lm Ericsson | Direct sequence CDMA coherent uplink detector |
-
1996
- 1996-01-04 US US08/582,856 patent/US5754599A/en not_active Expired - Lifetime
- 1996-10-28 WO PCT/US1996/017285 patent/WO1997025774A1/en active IP Right Grant
- 1996-10-28 BR BR9607810A patent/BR9607810A/pt not_active IP Right Cessation
- 1996-10-28 JP JP52517897A patent/JP3275079B2/ja not_active Expired - Fee Related
- 1996-10-28 KR KR1019970706169A patent/KR100294173B1/ko not_active IP Right Cessation
- 1996-10-28 CN CN96192353A patent/CN1077353C/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003005596A1 (fr) * | 2001-07-02 | 2003-01-16 | Kawasaki Microelectronics, Inc. | Appareil de reception amrc et procede a decision souple des symboles de codes de correction d'erreur |
Also Published As
Publication number | Publication date |
---|---|
WO1997025774A1 (en) | 1997-07-17 |
CN1177426A (zh) | 1998-03-25 |
BR9607810A (pt) | 1998-07-07 |
KR19980702762A (ko) | 1998-08-05 |
JP3275079B2 (ja) | 2002-04-15 |
US5754599A (en) | 1998-05-19 |
KR100294173B1 (ko) | 2001-09-17 |
CN1077353C (zh) | 2002-01-02 |
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