DE966796T1 - Mehrkanaliger viterbi-dekoder - Google Patents
Mehrkanaliger viterbi-dekoderInfo
- Publication number
- DE966796T1 DE966796T1 DE0966796T DE98908938T DE966796T1 DE 966796 T1 DE966796 T1 DE 966796T1 DE 0966796 T DE0966796 T DE 0966796T DE 98908938 T DE98908938 T DE 98908938T DE 966796 T1 DE966796 T1 DE 966796T1
- Authority
- DE
- Germany
- Prior art keywords
- data
- decoding
- channel
- channels
- data rate
- 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.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract 15
- 238000004364 calculation method Methods 0.000 claims 4
- 238000000034 method Methods 0.000 claims 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000004044 response Effects 0.000 claims 1
- 238000001228 spectrum Methods 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
Classifications
-
- 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
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
- H04L1/006—Trellis-coded modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
- H03M13/256—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with trellis coding, e.g. with convolutional codes and TCM
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
- H03M13/4107—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors implementing add, compare, select [ACS] operations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
- H03M13/4161—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors implementing path management
- H03M13/4169—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors implementing path management using traceback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6502—Reduction of hardware complexity or efficient processing
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6502—Reduction of hardware complexity or efficient processing
- H03M13/6505—Memory efficient implementations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6569—Implementation on processors, e.g. DSPs, or software implementations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- 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
- H04L1/0046—Code rate detection or code type detection
-
- 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
- H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables
-
- 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
- H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables
- H04L1/0053—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables specially adapted for power saving
-
- 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
-
- 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
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
-
- 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
- H04L1/0072—Error control for data other than payload data, e.g. control data
-
- 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
- H04L1/0075—Transmission of coding parameters to receiver
-
- 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
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- 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
- H04L25/0262—Arrangements for detecting the data rate of an incoming signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
-
- 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
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
- H04L2025/03675—Blind algorithms using gradient methods
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Artificial Intelligence (AREA)
- Power Engineering (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Selective Calling Equipment (AREA)
- Circuits Of Receivers In General (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
- Transceivers (AREA)
- Stereo-Broadcasting Methods (AREA)
Claims (12)
1. Eine Kommunikationsstation (17) zur Übermittlung von Mehrkanaldaten-Kommunikationssignalen
einschließend das gleichzeitige Empfangen und Verarbeiten mehrerer Datenkanäle, die unabhängige Raten haben und sich die gleiche gewählte
Bandbreite teilen, aufweisend:
Demodulatormittel (49a, 49b) zum Empfangen eines Mehrkanaldaten-Kommunikationssignals,
das mehrere Datenkanäle mit unabhängigen Raten auf der
&iacgr;&ogr; gewählten Bandbreite hat; ein Entspreizungsmittel (35a, 35b) zum Trennen gewählter
Datenkanäle eines empfangenen Signals und Identifizieren einer Datenrate für jeden
Kanal; und eine Vielzahl von Dekodiermitteln (67a-d), wobei jedes der Dekodiermittel
(67a-d) einen getrennten Kanal des Mehrkanaldaten-Kommunikationssignals mit einer
zugeteilten Datenrate dekodiert; wobei die Kommunikationsstation dadurch gekennzeichnet ist, daß:
die Vielzahl von Dekodiermitteln (67a-d) sich einen gemeinsamen Dekodierspeicher
(69, 73) teilt; und
ein Steuermittel (71, 81, 83) jeden getrennten Kanal zu einem der Dekodiermittel (67ad)
leitet und dem Dekodiermittel eine Datenrate zuteilt, als Antwort auf die Identifikation der Datenraten durch das genannte Entspreizungsmittel.
2. Die Kommunikationsstation nach Anspruch 1, bei der der gemeinsame
Dekodierspeicher einen Metrikzustandsspeicher (69) und einen Rückverfolgungsspeicher (73) enthält, die im Zusammenhang mit der Verarbeitung aller
getrennter Kanäle benutzt werden, welche während des genannten Dekodierens dekodiert werden.
3. Die Kommunikationsstation nach Anspruch 2, bei der der Metrikzustandsspeicher (69)
in einem Ping-Pong-System so aufgebaut ist, daß entweder ein Ping oder ein Pong des
Ping-Pong-Systems zur gleichen Zeit eingeschrieben oder ausgelesen werden kann.
OE/EP 09667S8T1
4. Die Kommunikationsstation nach Anspruch 1, weiter gekennzeichnet durch eine
Euklid'sche Abstandsberechnungsmaschine (65), die gemeinsam als Ressource für die
Vielzahl von Dekodiermitteln (67a-d) benutzt wird;
wobei die Euklid'sche Abstandsberechnungsmaschine (65) zur Berechnung der
Abständevon einem empfangenen Symbol eines gerade dekodiert werdenden Kanals zu
jedem von vier QPSK-Konstellationspunkten und zur Identifizierung des nächstbefindlichen von den vier QPSK-Konstellationspunkten für jedes empfangene
Symbol dient.
5. Die Kommunikationsstation nach Anspruch 4, bei der die Euklid'sche
Abstandsberechnungsmaschine (65) in Bezug auf alle Symbole der Kanäle arbeitet, die
auf die genannten Dekodiermittel (67a-d) gerichtet sind.
6. Die Kommunikationsstation nach Anspruch 1, bei der:
die unabhängigen Datenraten eine Maximaldatenrate enthalten, in der unabhängige
Datenraten kleiner als die genannte Maximaldatenrate ein Faktor der genannten Datenrate sind und verdoppelte Daten im Verhältnis des genannten Faktors zu der
Maximaldatenrate enthalten.
7. Die Kommunikationsstation nach Anspruch 6, weiter gekennzeichnet durch eine
Dekodierschnittstelle (63), die gemeinsam als Ressource für die genannte Vielzahl von
Dekodiermitteln (67a-d) benutzt wird, wobei die Dekodierschnittstelle (63) die verdoppelten Daten für unabhängige Datenraten, die kleiner als die Maximaldatenrate
sind, kohärent unter Benutzung einer Sättigungslogik hinzufügt.
8. Die Kommunikationsstation nach Anspruch 1, bei der jedes der genannten Dekodiermittel
(67a-d) eine Hinzufüg-Vergleich-Auswähl-Schaltung (7) enthält, wobei jede der Hinzufüg-Vergleich-Auswahl-Schaltungen jeden getrennten Kanal mit einem Viterbi-
DE/EP O 366796T1
Algorithmus unter Benutzung einer Sättigungslogik verarbeitet, um zu einer besten Metrik
für die Verwendung bei der Verfolgungsverarbeitung von Symbolen von Kanaldaten, die
gerade dekodiert werden, zu kommen, und wobei jede genannte beste Metrik nachnormalisiert wird.
9. Ein Hochgeschwindigkeitsmehrkanal-Viterbidekoder geringer Leistung zur gleichzeitigen
Dekodierung mehrerer Datenkanäle mit unabhängigen Datenraten, zur Benutzung in einem Spreizspektrum-Modulationsempfänger, gekennzeichnet durch:
eine Dekodierschnittstelle (63) zum Empfangen von mindestens vier entspreizten
&iacgr;&ogr; Datenkanälen mit unabhängigen Datenraten, wobei die Datenraten eine Maximaldatenrate
und Dateriraten enthalten, die kleiner als die Maximaldatenrate sind;
eine Euklid'sche Abstandsberechnungsmaschine (65) zur Berechnung von Abständen von
einem empfangenen Symbol von Kanaldaten, die gerade dekodiert werden, zu jedem von
vier QPSK-Konstellationspunkten und zur Identifizierung des nächstbefindlichen der vier
QPSK-Konstellationspunkte für jedes empfangene Symbol;
mindestens vier AC S-Hinzufüg-Vergleich-Auswähl-Schaltungen (67a-d) zur
Verarbeitung von mindestens vier getrennten Datenkanälen mit einer zugeordneten Datenrate;
einen Zustandsmetrikspeicher (69) und einen Rückverfolgungsspeicher (73), die zur
Verarbeitung aller genannten gerade dekodiert werdenden Datenkanäle während des Dekodierens benutzt werden;
einen ACS-Prozessor (71), der zur Koordinierung der Verarbeitung der genannten ACS-Schaltungen
benutzt wird;
einen Rückverfolgungsprozessor (75) zum Ankommen an einem dekodierten Symbol für
alle Datenkanäle; und
eine Empfängersystemschnittstelle (77) zur Kopplung des Mehrkanal-Viterbi-Dekoders
mit zusätzlichen Prozessoren.
DE/EP O 866796&Tgr;1
10. Der Viterbi-Dekoder nach Anspruch 9, bei dem der Zustandsmetnkspeicher (69) in einem
Ping-Pong-System aufgebaut ist, derart, daß entweder ein Ping oder ein Pong des Ping-Pong-Systems
gleichzeitig eingeschrieben oder ausgelesen werden können.
11. Der Viterbi-Dekoder nach Anspruch 9, bei dem die Dekodierschnittstelle (63) eine
gemeinsam genutzte Ressource für mindestens vier Kanäle ist.
12. Der Viterbi-Dekoder nach Anspruch 9, bei dem die ACS-Schaltungen (67a-d) jeden
getrennten Kanal mit einem Viterbi-Algorithmus unter Benutzung einer Sättigungslogik
jo verarbeiten, um bei einer besten Metrik zur Benutzung bei der
Rückverfolgungsverarbeitung von Symbolen von Kanaldaten, die gerade dekodiert
werden, anzukommen, und wobei jede beste Metrik nachnormalisiert wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4047797P | 1997-03-12 | 1997-03-12 | |
US08/871,008 US6005898A (en) | 1997-03-12 | 1997-06-06 | Multichannel viterbi decoder |
PCT/US1998/004243 WO1998040971A1 (en) | 1997-03-12 | 1998-03-04 | Multichannel viterbi decoder |
Publications (1)
Publication Number | Publication Date |
---|---|
DE966796T1 true DE966796T1 (de) | 2000-10-05 |
Family
ID=26717094
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE0966796T Pending DE966796T1 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger viterbi-dekoder |
DE69825328T Expired - Lifetime DE69825328T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger viterbi-dekoder |
DE69807850T Expired - Lifetime DE69807850T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanalige kommunikationseinheit mit dekoder |
DE69835177T Expired - Lifetime DE69835177T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
DE69838922T Expired - Lifetime DE69838922T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
DE69824208T Expired - Lifetime DE69824208T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
DE69824051T Expired - Lifetime DE69824051T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
Family Applications After (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69825328T Expired - Lifetime DE69825328T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger viterbi-dekoder |
DE69807850T Expired - Lifetime DE69807850T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanalige kommunikationseinheit mit dekoder |
DE69835177T Expired - Lifetime DE69835177T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
DE69838922T Expired - Lifetime DE69838922T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
DE69824208T Expired - Lifetime DE69824208T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
DE69824051T Expired - Lifetime DE69824051T2 (de) | 1997-03-12 | 1998-03-04 | Mehrkanaliger Viterbi-Dekoder |
Country Status (10)
Country | Link |
---|---|
US (2) | US6005898A (de) |
EP (8) | EP1161018B1 (de) |
JP (1) | JP3988956B2 (de) |
CN (2) | CN1109414C (de) |
AT (7) | ATE267483T1 (de) |
DE (7) | DE966796T1 (de) |
DK (6) | DK1161019T3 (de) |
ES (8) | ES2387708T3 (de) |
HK (7) | HK1024357A1 (de) |
WO (1) | WO1998040971A1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060262832A1 (en) * | 1997-03-12 | 2006-11-23 | Interdigital Technology Corporation | Convolutionally encoding and decoding multiple data streams |
US6404828B2 (en) * | 1997-03-12 | 2002-06-11 | Interdigital Technology Corporation | Multichannel decoder |
US6301683B1 (en) * | 1997-06-09 | 2001-10-09 | Vocal Technologies, Ltd. | Trellis encoding technique for PCM modems |
US6400966B1 (en) * | 1997-10-07 | 2002-06-04 | Telefonaktie Bolaget Lm Ericsson (Publ) | Base station architecture for a mobile communications system |
US6259687B1 (en) * | 1997-10-31 | 2001-07-10 | Interdigital Technology Corporation | Communication station with multiple antennas |
US6112325A (en) * | 1998-01-23 | 2000-08-29 | Dspc Technologies, Ltd. | Method and device for detecting rate |
JP4048510B2 (ja) * | 1998-03-05 | 2008-02-20 | 富士通株式会社 | Cdma移動通信システムにおける無線基地局 |
FI104774B (fi) * | 1998-03-23 | 2000-03-31 | Nokia Networks Oy | Menetelmä ja laitteisto modulaation ilmaisemiseksi |
US6269130B1 (en) * | 1998-08-04 | 2001-07-31 | Qualcomm Incorporated | Cached chainback RAM for serial viterbi decoder |
US6735724B1 (en) * | 1999-04-08 | 2004-05-11 | Texas Instruments Incorporated | Detection error estimation and method |
US8050198B2 (en) | 1999-05-24 | 2011-11-01 | Qualcomm Incorporated | Method and system for scheduling data transmission in communication systems |
KR100346152B1 (ko) | 1999-09-17 | 2002-08-01 | 주식회사 하이닉스반도체 | 코드 분할 다중 접속방식의 이동통신 기지국 시스템 |
RU2002123884A (ru) * | 2000-03-08 | 2004-03-10 | Арм Лимитед (Gb) | Декодирование витерби с обновлением метрики пути, выполняемым в порядке расположения битовых сегментов |
US20020031195A1 (en) * | 2000-09-08 | 2002-03-14 | Hooman Honary | Method and apparatus for constellation decoder |
US7397826B2 (en) * | 2001-06-21 | 2008-07-08 | Koninklijke Philips Electronics N.V. | MIMO transmission system in a radio communications network |
JP3612563B2 (ja) * | 2001-09-07 | 2005-01-19 | 独立行政法人情報通信研究機構 | マルチモードブロック符号化変調復調方法 |
US7321618B2 (en) * | 2002-04-09 | 2008-01-22 | Texas Instruments Incorporated | PCM upstream data transmission server |
US7046747B2 (en) * | 2002-04-16 | 2006-05-16 | Intel Corporation | Viterbi decoder and decoding method using rescaled branch metrics in add-compare-select operations |
CN100399706C (zh) * | 2002-08-14 | 2008-07-02 | 联发科技股份有限公司 | 部分响应最大可能性信道的维特比译码器 |
US7295622B2 (en) * | 2003-05-09 | 2007-11-13 | Texas Instruments Incorporated | System and method for information decoding using batched processing of independent parameters |
US7117427B2 (en) * | 2003-07-09 | 2006-10-03 | Texas Instruments Incorporated | Reduced complexity decoding for trellis coded modulation |
EP1511178A1 (de) * | 2003-09-01 | 2005-03-02 | Alcatel | Methode um ein Datenwort zu dekodieren |
US7434148B2 (en) * | 2004-12-30 | 2008-10-07 | Freescale Semiconductor, Inc. | Track buffer in a parallel decoder |
JP2007300400A (ja) * | 2006-04-28 | 2007-11-15 | Matsushita Electric Ind Co Ltd | 送信回路、送信方法、及びそれを用いた通信機器 |
US8165224B2 (en) | 2007-03-22 | 2012-04-24 | Research In Motion Limited | Device and method for improved lost frame concealment |
US8856630B2 (en) * | 2008-06-10 | 2014-10-07 | Telefonaktiebolaget L M Ericsson (Publ) | Continuous parallel Viterbi decoder |
US8477879B2 (en) * | 2009-12-23 | 2013-07-02 | Texas Instruments Incorporated | System and method for bi-phase modulation decoding |
RU2421900C1 (ru) * | 2010-02-27 | 2011-06-20 | Тимур Георгиевич Келин | Многоканальный последовательный декодер витерби |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4709377A (en) * | 1985-03-13 | 1987-11-24 | Paradyne | Viterbi decoder for wireline modems |
JPH0626346B2 (ja) * | 1990-04-26 | 1994-04-06 | 郵政省通信総合研究所長 | 畳込み符号化直交fm・ビタビ受信方式 |
US5659569A (en) * | 1990-06-25 | 1997-08-19 | Qualcomm Incorporated | Data burst randomizer |
US5103459B1 (en) * | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
US5511073A (en) * | 1990-06-25 | 1996-04-23 | Qualcomm Incorporated | Method and apparatus for the formatting of data for transmission |
JP2554219B2 (ja) * | 1991-11-26 | 1996-11-13 | 日本電信電話株式会社 | ディジタル信号の重畳伝送方式 |
US5559757A (en) * | 1991-12-18 | 1996-09-24 | Catipovic; Josko A. | Spatial diversity processing for underwater acoustic telemetry |
SE470371B (sv) * | 1992-06-23 | 1994-01-31 | Ericsson Telefon Ab L M | Sätt och anordning vid digital signalöverföring att hos en mottagare estimera överförda symboler |
US5396516A (en) * | 1993-02-22 | 1995-03-07 | Qualcomm Incorporated | Method and system for the dynamic modification of control paremeters in a transmitter power control system |
US5566206A (en) * | 1993-06-18 | 1996-10-15 | Qualcomm Incorporated | Method and apparatus for determining data rate of transmitted variable rate data in a communications receiver |
MY112371A (en) * | 1993-07-20 | 2001-05-31 | Qualcomm Inc | System and method for orthogonal spread spectrum sequence generation in variable data rate systems |
ZA947317B (en) * | 1993-09-24 | 1995-05-10 | Qualcomm Inc | Multirate serial viterbi decoder for code division multiple access system applications |
JP3091225B2 (ja) * | 1993-11-01 | 2000-09-25 | クゥアルコム・インコーポレイテッド | 可変ディジタルデータを送信する方法及び装置 |
US5454009A (en) * | 1994-01-13 | 1995-09-26 | Scientific-Atlanta, Inc. | Method and apparatus for providing energy dispersal using frequency diversity in a satellite communications system |
US5465269A (en) * | 1994-02-02 | 1995-11-07 | Motorola, Inc. | Method and apparatus for encoding and decoding a supplementary signal |
JP3366128B2 (ja) * | 1994-09-30 | 2003-01-14 | 富士通株式会社 | ビタビ復号方式を用いた多値符号化信号の復号器 |
US5528593A (en) * | 1994-09-30 | 1996-06-18 | Qualcomm Incorporated | Method and apparatus for controlling power in a variable rate communication system |
US5619524A (en) * | 1994-10-04 | 1997-04-08 | Motorola, Inc. | Method and apparatus for coherent communication reception in a spread-spectrum communication system |
JP2701761B2 (ja) * | 1994-11-02 | 1998-01-21 | 日本電気株式会社 | 送信ビットレート判別方法及び装置 |
JP2605641B2 (ja) * | 1994-11-14 | 1997-04-30 | 日本電気株式会社 | 可変ビットレート判別方法及び装置 |
US5497401A (en) * | 1994-11-18 | 1996-03-05 | Thomson Consumer Electronics, Inc. | Branch metric computer for a Viterbi decoder of a punctured and pragmatic trellis code convolutional decoder suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data |
JP3169522B2 (ja) * | 1995-01-19 | 2001-05-28 | 沖電気工業株式会社 | データ受信装置 |
TW347616B (en) * | 1995-03-31 | 1998-12-11 | Qualcomm Inc | Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed. |
-
1997
- 1997-06-06 US US08/871,008 patent/US6005898A/en not_active Expired - Lifetime
-
1998
- 1998-03-04 DE DE0966796T patent/DE966796T1/de active Pending
- 1998-03-04 EP EP01120762A patent/EP1161018B1/de not_active Expired - Lifetime
- 1998-03-04 ES ES10179535T patent/ES2387708T3/es not_active Expired - Lifetime
- 1998-03-04 AT AT01120763T patent/ATE267483T1/de not_active IP Right Cessation
- 1998-03-04 DK DK01120763T patent/DK1161019T3/da active
- 1998-03-04 EP EP07025032A patent/EP1895671B1/de not_active Expired - Lifetime
- 1998-03-04 AT AT04009884T patent/ATE332592T1/de not_active IP Right Cessation
- 1998-03-04 DE DE69825328T patent/DE69825328T2/de not_active Expired - Lifetime
- 1998-03-04 AT AT06012665T patent/ATE382208T1/de not_active IP Right Cessation
- 1998-03-04 ES ES01120763T patent/ES2172488T3/es not_active Expired - Lifetime
- 1998-03-04 ES ES04009884T patent/ES2268532T3/es not_active Expired - Lifetime
- 1998-03-04 DK DK10179535.9T patent/DK2259440T3/da active
- 1998-03-04 DE DE69807850T patent/DE69807850T2/de not_active Expired - Lifetime
- 1998-03-04 EP EP10179535A patent/EP2259440B1/de not_active Expired - Lifetime
- 1998-03-04 AT AT98908938T patent/ATE224118T1/de not_active IP Right Cessation
- 1998-03-04 AT AT01120761T patent/ATE268074T1/de not_active IP Right Cessation
- 1998-03-04 EP EP01120763A patent/EP1161019B1/de not_active Expired - Lifetime
- 1998-03-04 EP EP06012665A patent/EP1696584B1/de not_active Expired - Lifetime
- 1998-03-04 DE DE69835177T patent/DE69835177T2/de not_active Expired - Lifetime
- 1998-03-04 ES ES98908938T patent/ES2146560T3/es not_active Expired - Lifetime
- 1998-03-04 AT AT07025032T patent/ATE555552T1/de active
- 1998-03-04 DK DK04009884T patent/DK1439640T3/da active
- 1998-03-04 DK DK06012665T patent/DK1696584T3/da active
- 1998-03-04 DE DE69838922T patent/DE69838922T2/de not_active Expired - Lifetime
- 1998-03-04 ES ES07025032T patent/ES2386278T3/es not_active Expired - Lifetime
- 1998-03-04 EP EP01120761A patent/EP1161017B1/de not_active Expired - Lifetime
- 1998-03-04 ES ES01120761T patent/ES2172486T3/es not_active Expired - Lifetime
- 1998-03-04 WO PCT/US1998/004243 patent/WO1998040971A1/en active IP Right Grant
- 1998-03-04 DE DE69824208T patent/DE69824208T2/de not_active Expired - Lifetime
- 1998-03-04 ES ES01120762T patent/ES2172487T3/es not_active Expired - Lifetime
- 1998-03-04 EP EP98908938A patent/EP0966796B1/de not_active Expired - Lifetime
- 1998-03-04 DK DK01120761T patent/DK1161017T3/da active
- 1998-03-04 ES ES06012665T patent/ES2300083T3/es not_active Expired - Lifetime
- 1998-03-04 CN CN98803254A patent/CN1109414C/zh not_active Expired - Fee Related
- 1998-03-04 DE DE69824051T patent/DE69824051T2/de not_active Expired - Lifetime
- 1998-03-04 AT AT01120762T patent/ATE272271T1/de not_active IP Right Cessation
- 1998-03-04 CN CNB031079385A patent/CN1278498C/zh not_active Expired - Fee Related
- 1998-03-04 EP EP04009884A patent/EP1439640B1/de not_active Expired - Lifetime
- 1998-03-04 DK DK01120762T patent/DK1161018T3/da active
- 1998-03-04 JP JP53962498A patent/JP3988956B2/ja not_active Expired - Fee Related
-
1999
- 1999-11-01 US US09/432,038 patent/US6256339B1/en not_active Expired - Lifetime
-
2000
- 2000-06-19 HK HK00103665A patent/HK1024357A1/xx not_active IP Right Cessation
-
2002
- 2002-04-15 HK HK02102836.2A patent/HK1041387B/zh not_active IP Right Cessation
- 2002-04-15 HK HK02102834.4A patent/HK1041385B/zh not_active IP Right Cessation
- 2002-04-15 HK HK02102835.3A patent/HK1041386B/zh not_active IP Right Cessation
-
2005
- 2005-01-21 HK HK05100605A patent/HK1067253A1/xx not_active IP Right Cessation
-
2007
- 2007-02-27 HK HK07102208A patent/HK1094840A1/xx not_active IP Right Cessation
-
2008
- 2008-09-05 HK HK08109926.2A patent/HK1114509A1/xx not_active IP Right Cessation
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE966796T1 (de) | Mehrkanaliger viterbi-dekoder | |
DE69618791T2 (de) | Kommunikationsanordnung mit erwiderten datenselektion | |
CA2162417C (en) | Data rate detector for terminal station receiver | |
DE69128927T2 (de) | Subtraktive Kodedivisionsdemodulationschaltung | |
DE69815689T2 (de) | Übertragungsverfahren und vorrichtung zur adaptiven signalverarbeitung auf basis von mobilitätseigenschaften | |
DE69531325T2 (de) | Einrichtung zum Diversity-Empfang | |
CA2093228C (en) | Cdma subtractive demodulation | |
DE69738314T2 (de) | Kohärente signalverarbeitung für cdma-nachrichtenübertragungssystem | |
US4672658A (en) | Spread spectrum wireless PBX | |
DE69330855T2 (de) | Cdma frequenzzuordnung | |
DE69307343T2 (de) | Verfahren und einrichtung zur steuerung der signalqualität in einem cdma-zellularkommunikationssystem | |
Simon et al. | The performance of trellis coded multilevel DPSK on a fading mobile satellite channel | |
DE19540652C2 (de) | Vorrichtung und Verfahren zum Dekodieren eines kohärenten, differenziell codierten, mehrstufig phasenumtastungsmodulierten (DEPSK) Signals | |
DE60104501T2 (de) | Kommunikationsendgerät und demodulationsverfahren | |
CA2021232A1 (en) | Diversity receiving system for use in digital radio communication with means for selecting branch by estimating propagation path property | |
WO1997024848A1 (en) | A method for identifying data transmission rate, and a receiver | |
DE60023152T2 (de) | Verfahren und anordnung zur kohärenten demodulation in einem kommunikationssystem mit einem geschalteten pilotsignal | |
DE60204750T2 (de) | Verfahren und Vorrichtung zur Sendeleistungsregelung von Kontrollinformation in einem mobilen Kommunikationssystem | |
EP0219085A2 (de) | Drahtlose Spreizbandnebenstellenanlage | |
Schaub | Spread frequency shift keying | |
US6002715A (en) | Method for a receiver unit to determine a quality value for a received signal | |
DE19811066A1 (de) | Apparat zur Unterstützung einer Vielfalt von Übertragungsraten in Spread-Spektrum-CDMA-Systemen | |
DE60038484T2 (de) | Verfahren und gerät zur energieschätzung in einem drahtlosen empfänger der mehrere teile eines gemeinsamen signals empfangen kann | |
DE102004014739B4 (de) | Ratenabhängige Übertragungsverstärkungssteuerung für WLAN-Systeme | |
US5790515A (en) | Method and apparatus for sorting walsh indexes in a communication system receiver |