DE69720969T2 - Verfahren zur übertragung nach einer trelliskode, die aus einer festen menge basisbandsignalpunkte gewählt wird - Google Patents
Verfahren zur übertragung nach einer trelliskode, die aus einer festen menge basisbandsignalpunkte gewählt wirdInfo
- Publication number
- DE69720969T2 DE69720969T2 DE69720969T DE69720969T DE69720969T2 DE 69720969 T2 DE69720969 T2 DE 69720969T2 DE 69720969 T DE69720969 T DE 69720969T DE 69720969 T DE69720969 T DE 69720969T DE 69720969 T2 DE69720969 T2 DE 69720969T2
- Authority
- DE
- Germany
- Prior art keywords
- trelliscode
- transmitting
- baseband signal
- signal points
- fixed quantity
- 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.)
- Expired - Lifetime
Links
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
- H04L25/4927—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using levels matched to the quantisation levels of the channel
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/749,040 US5812602A (en) | 1996-11-14 | 1996-11-14 | System and device for, and method of, communicating according to a trellis code of baseband signals chosen from a fixed set of baseband signal points |
PCT/US1997/020133 WO1998021850A1 (en) | 1996-11-14 | 1997-11-06 | Method of communicating according to a trellis code chosen from a fixed set of baseband signal points |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69720969D1 DE69720969D1 (de) | 2003-05-22 |
DE69720969T2 true DE69720969T2 (de) | 2003-10-30 |
Family
ID=25011982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69720969T Expired - Lifetime DE69720969T2 (de) | 1996-11-14 | 1997-11-06 | Verfahren zur übertragung nach einer trelliskode, die aus einer festen menge basisbandsignalpunkte gewählt wird |
Country Status (5)
Country | Link |
---|---|
US (1) | US5812602A (de) |
EP (1) | EP0880838B1 (de) |
AU (1) | AU5197598A (de) |
DE (1) | DE69720969T2 (de) |
WO (1) | WO1998021850A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5970103A (en) | 1996-09-06 | 1999-10-19 | Townshend; Brent | High speed communications system for analog subscriber connections |
US6233275B1 (en) | 1994-12-09 | 2001-05-15 | Brent Townshend | High speed communications system for analog subscriber connections |
CA2266904C (en) | 1994-12-09 | 2002-04-02 | Brent Townshend | High speed decoder and decoding method |
US6157678A (en) * | 1996-12-18 | 2000-12-05 | Lucent Technologies Inc. | Probabilistic trellis/coded modulation with PCM-derived constellations |
ES2264194T3 (es) * | 1997-02-20 | 2006-12-16 | Brent Townshend | Sistema de comunicaciones de alta velocidad para conexiones analogicas de abonado. |
US6002713A (en) * | 1997-10-22 | 1999-12-14 | Pc Tel, Inc. | PCM modem equalizer with adaptive compensation for robbed bit signalling |
US6577683B1 (en) | 1997-10-24 | 2003-06-10 | 3Com Corporation | Method and device for generating signal constellations in PCM space for high speed data communication |
US6125149A (en) * | 1997-11-05 | 2000-09-26 | At&T Corp. | Successively refinable trellis coded quantization |
US6023493A (en) | 1998-01-20 | 2000-02-08 | Conexant Systems, Inc. | Method and apparatus for synchronizing a data communication system to a periodic digital impairment |
US6272171B1 (en) * | 1999-01-28 | 2001-08-07 | Pc Tel, Inc. | Robbed bit signaling identification in a PCM modem |
US6560277B2 (en) | 2001-02-09 | 2003-05-06 | Pc Tel, Inc. | Distinguishing between final coding of received signals in a PCM modem |
US7170946B2 (en) * | 2002-03-04 | 2007-01-30 | Lucent Technologies Inc. | System and method for reviving catastrophic codes |
US10020912B2 (en) | 2013-03-13 | 2018-07-10 | Sans R&D, Llc | Method and a system for a receiver design in bandwidth constrained communication systems |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5040191A (en) * | 1987-02-24 | 1991-08-13 | Codex Corporation | Partial response channel signaling systems |
US4959842A (en) * | 1988-04-13 | 1990-09-25 | Codex Corporation | Signal constellations |
US5150381A (en) * | 1989-02-16 | 1992-09-22 | Codex Corporation | Trellis shaping for modulation systems |
US5544328A (en) * | 1991-10-31 | 1996-08-06 | At&T Bell Laboratories | Coded modulation with unequal error protection |
US5394437A (en) * | 1992-10-20 | 1995-02-28 | At&T Corp. | High-speed modem synchronized to a remote CODEC |
JPH09509308A (ja) * | 1993-12-09 | 1997-09-22 | レキット アンド コールマン インコーポレイテッド | 真菌酵素及び細菌酵素を用いる下水処理用組成物及び方法 |
US5528625A (en) * | 1994-01-03 | 1996-06-18 | At&T Corp. | High speed quantization-level-sampling modem with equalization arrangement |
US5659579A (en) * | 1995-02-01 | 1997-08-19 | Lucent Technologies Inc. | Multilevel coding for fractional bits |
-
1996
- 1996-11-14 US US08/749,040 patent/US5812602A/en not_active Expired - Lifetime
-
1997
- 1997-11-06 DE DE69720969T patent/DE69720969T2/de not_active Expired - Lifetime
- 1997-11-06 EP EP97946886A patent/EP0880838B1/de not_active Expired - Lifetime
- 1997-11-06 WO PCT/US1997/020133 patent/WO1998021850A1/en active IP Right Grant
- 1997-11-06 AU AU51975/98A patent/AU5197598A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO1998021850A1 (en) | 1998-05-22 |
AU5197598A (en) | 1998-06-03 |
EP0880838A1 (de) | 1998-12-02 |
US5812602A (en) | 1998-09-22 |
EP0880838A4 (de) | 2001-08-29 |
DE69720969D1 (de) | 2003-05-22 |
EP0880838B1 (de) | 2003-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: MOTOROLA MOBILITY, INC. ( N.D. GES. D. STAATES, US |