EA199900415A1 - Способ одновременной фазовой синхронизации и декодирования, использующий критерий максимального правдоподобия, и соответствующее устройство - Google Patents
Способ одновременной фазовой синхронизации и декодирования, использующий критерий максимального правдоподобия, и соответствующее устройствоInfo
- Publication number
- EA199900415A1 EA199900415A1 EA199900415A EA199900415A EA199900415A1 EA 199900415 A1 EA199900415 A1 EA 199900415A1 EA 199900415 A EA199900415 A EA 199900415A EA 199900415 A EA199900415 A EA 199900415A EA 199900415 A1 EA199900415 A1 EA 199900415A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- received
- account
- decoding
- phase synchronization
- criterion
- Prior art date
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
- H04L25/03273—Arrangements for operating in conjunction with other apparatus with carrier recovery circuitry
-
- 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
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0063—Elements of loops
- H04L2027/0067—Phase error detectors
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)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Изобретение предусматривает способ одновременной фазовой синхронизации и декодирования, который использует критерий максимального правдоподобия. Способ применим к пакетам сигналов, принимаемых приемником, причем принимаемые сигналы подвергались сверточному кодированию в передатчике. Способ состоит в вычислении метрик ветвления с учетом, во-первых, постоянных решений, вычисляемых для принимаемых символов, и, во-вторых, величины, учитывающей фазовую ошибку между несущей принимаемого сигнала и сигналом гетеродина приемника, причем с помощью указанной величины взвешиваются переменные решения, образованные комплексными цифровыми компонентами принимаемых символов. В соответствии с настоящим изобретением, указанная величина равна Σ* для каждого из анализируемых каналов, гдесимвол * обозначает комплексное сопряжение, k представляет текущий декодируемый символ и N равно числу символов, принятых во внимание.Международная заявка была опубликована вместе с отчетом о международном поиске.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9710667A FR2767983B1 (fr) | 1997-08-26 | 1997-08-26 | Procede de decodage et de synchronisation de phase simultanes exploitant le critere de maximum de vraisemblance et dispositif correspondant |
PCT/FR1998/001842 WO1999011041A1 (fr) | 1997-08-26 | 1998-08-24 | Decodage et synchronisation de phase simultanes exploitant le critere de maximum de vraisemblance |
Publications (1)
Publication Number | Publication Date |
---|---|
EA199900415A1 true EA199900415A1 (ru) | 1999-10-28 |
Family
ID=9510509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EA199900415A EA199900415A1 (ru) | 1997-08-26 | 1998-08-24 | Способ одновременной фазовой синхронизации и декодирования, использующий критерий максимального правдоподобия, и соответствующее устройство |
Country Status (9)
Country | Link |
---|---|
US (1) | US6442219B1 (ru) |
EP (1) | EP0934642A1 (ru) |
JP (1) | JP2001505031A (ru) |
CN (1) | CN1237301A (ru) |
AU (1) | AU9078398A (ru) |
EA (1) | EA199900415A1 (ru) |
FR (1) | FR2767983B1 (ru) |
IL (1) | IL129491A (ru) |
WO (1) | WO1999011041A1 (ru) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6744836B2 (en) | 2001-05-08 | 2004-06-01 | Comsat Corporation | Apparatus, computer readable medium, transmission medium, and method for synchronizing a received signal based on a maximum likelihood principle using a bisection technique |
KR100695008B1 (ko) * | 2004-12-20 | 2007-03-14 | 한국전자통신연구원 | 무선 통신 시스템에서의 독립적 복호가 가능한 채널 부호의하위 부호 구조를 이용한 위상 복원 장치 및 방법 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4583078A (en) * | 1984-11-13 | 1986-04-15 | Communications Satellite Corporation | Serial Viterbi decoder |
US5684832A (en) * | 1993-06-04 | 1997-11-04 | Ntt Mobile Communications Network | Maximum likelihood differential detecting method and differential detector thereof |
US5414738A (en) * | 1993-11-09 | 1995-05-09 | Motorola, Inc. | Maximum likelihood paths comparison decoder |
EP1154605B1 (en) * | 1994-06-23 | 2004-09-08 | NTT Mobile Communications Network Inc. | Maximum likelihood decoding coherent detecting method |
CN1086088C (zh) * | 1994-08-08 | 2002-06-05 | Ntt移动通信网株式会社 | 用于差分相移键控波的线性预测差分检测方法 |
US6233290B1 (en) * | 1995-04-13 | 2001-05-15 | California Institute Of Technology | Method for noncoherent coded modulation |
-
1997
- 1997-08-26 FR FR9710667A patent/FR2767983B1/fr not_active Expired - Fee Related
-
1998
- 1998-08-24 EP EP98942775A patent/EP0934642A1/fr not_active Withdrawn
- 1998-08-24 IL IL12949198A patent/IL129491A/xx not_active IP Right Cessation
- 1998-08-24 WO PCT/FR1998/001842 patent/WO1999011041A1/fr not_active Application Discontinuation
- 1998-08-24 EA EA199900415A patent/EA199900415A1/ru unknown
- 1998-08-24 AU AU90783/98A patent/AU9078398A/en not_active Abandoned
- 1998-08-24 JP JP51401599A patent/JP2001505031A/ja active Pending
- 1998-08-24 US US09/284,874 patent/US6442219B1/en not_active Expired - Fee Related
- 1998-08-24 CN CN98801230.8A patent/CN1237301A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2767983A1 (fr) | 1999-03-05 |
CN1237301A (zh) | 1999-12-01 |
WO1999011041A1 (fr) | 1999-03-04 |
FR2767983B1 (fr) | 1999-10-08 |
EP0934642A1 (fr) | 1999-08-11 |
IL129491A (en) | 2003-03-12 |
US6442219B1 (en) | 2002-08-27 |
AU9078398A (en) | 1999-03-16 |
IL129491A0 (en) | 2000-02-29 |
JP2001505031A (ja) | 2001-04-10 |
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