BR9914950A - Processo para a equalização, sobretudo para espécies de modulação offset - Google Patents
Processo para a equalização, sobretudo para espécies de modulação offsetInfo
- Publication number
- BR9914950A BR9914950A BR9914950-8A BR9914950A BR9914950A BR 9914950 A BR9914950 A BR 9914950A BR 9914950 A BR9914950 A BR 9914950A BR 9914950 A BR9914950 A BR 9914950A
- Authority
- BR
- Brazil
- Prior art keywords
- value
- reception signal
- error
- offset modulation
- dfe
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/01—Equalisers
-
- 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
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
- H04L25/03146—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a recursive structure
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)
- Filters That Use Time-Delay Elements (AREA)
Abstract
Patente de Invenção: "PROCESSO PARA A EQUALIZAçãO, SOBRETUDO PARA ESPéCIES DE MODULAçãO OFFSET". A invenção descreve um método para a equalização de um sinal de recepção em um receptor digital com a ajuda de uma estrutura-DFB (Decision Feedback Equalizer). O sinal de recepção é baseado em uma constelação de sinais unidimensional ou em uma constelação de sinais transformável nesta (por exemplo, BPSK, GMSK, OQPSK). Os coeficientes do DFE são estabelecidos de tal modo, que o valor esperado do quadrado da parte real do erro do sinal de recepção é minimizado. Como diferença ao atual estado tecnológico portanto não é empregado o erro do valor complexo como base para a otimização. O cálculo é muito mais limitado ao valor real. Os coeficientes de filtro também podem ter um valor real em lugar de um valor complexo. O aspecto fundamental da invenção reside no fato de que é possível melhorar o desempenho da estrutura DFE de uma forma simples, mesmo a complexidade de cálculo pode ser reduzida comparado com o atual estado tecnológico.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98811090A EP0998083A1 (de) | 1998-10-30 | 1998-10-30 | Verfahren zum Entzerren, insbesondere für Offset-Modulationsarten |
| PCT/CH1999/000509 WO2000027083A1 (de) | 1998-10-30 | 1999-10-29 | Verfahren zum entzerren, insbesondere für offset-modulationsarten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9914950A true BR9914950A (pt) | 2001-11-06 |
Family
ID=8236418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9914950-8A BR9914950A (pt) | 1998-10-30 | 1999-10-29 | Processo para a equalização, sobretudo para espécies de modulação offset |
Country Status (12)
| Country | Link |
|---|---|
| EP (2) | EP0998083A1 (pt) |
| JP (1) | JP2002529964A (pt) |
| KR (1) | KR20010089314A (pt) |
| CN (1) | CN1144430C (pt) |
| AU (1) | AU6322599A (pt) |
| BR (1) | BR9914950A (pt) |
| CA (1) | CA2347747A1 (pt) |
| HK (1) | HK1040025A1 (pt) |
| ID (1) | ID29202A (pt) |
| IL (1) | IL142795A0 (pt) |
| NO (1) | NO20012104L (pt) |
| WO (1) | WO2000027083A1 (pt) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009079815A1 (fr) * | 2007-12-10 | 2009-07-02 | Zte Corporation | Procédé pour optimiser la performance radiofréquence du terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0614627B2 (ja) * | 1985-06-04 | 1994-02-23 | 富士通株式会社 | モデムのトレーニング方法 |
| EP0956650A1 (en) * | 1996-10-10 | 1999-11-17 | Statistical Signal Processing, Inc. | Signal processing apparatus employing the spectral property of the signal |
-
1998
- 1998-10-30 EP EP98811090A patent/EP0998083A1/de not_active Withdrawn
-
1999
- 1999-10-29 BR BR9914950-8A patent/BR9914950A/pt not_active IP Right Cessation
- 1999-10-29 ID IDW00200100934A patent/ID29202A/id unknown
- 1999-10-29 CN CNB998128473A patent/CN1144430C/zh not_active Expired - Fee Related
- 1999-10-29 CA CA002347747A patent/CA2347747A1/en not_active Abandoned
- 1999-10-29 JP JP2000580347A patent/JP2002529964A/ja active Pending
- 1999-10-29 EP EP99950419A patent/EP1125404A1/de not_active Withdrawn
- 1999-10-29 AU AU63225/99A patent/AU6322599A/en not_active Abandoned
- 1999-10-29 IL IL14279599A patent/IL142795A0/xx unknown
- 1999-10-29 WO PCT/CH1999/000509 patent/WO2000027083A1/de not_active Application Discontinuation
- 1999-10-29 KR KR1020017004859A patent/KR20010089314A/ko not_active Application Discontinuation
-
2001
- 2001-04-27 NO NO20012104A patent/NO20012104L/no not_active Application Discontinuation
-
2002
- 2002-02-26 HK HK02101468.9A patent/HK1040025A1/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002529964A (ja) | 2002-09-10 |
| EP0998083A1 (de) | 2000-05-03 |
| AU6322599A (en) | 2000-05-22 |
| CN1325580A (zh) | 2001-12-05 |
| NO20012104D0 (no) | 2001-04-27 |
| IL142795A0 (en) | 2002-03-10 |
| NO20012104L (no) | 2001-04-27 |
| CA2347747A1 (en) | 2000-05-11 |
| HK1040025A1 (zh) | 2002-05-17 |
| EP1125404A1 (de) | 2001-08-22 |
| CN1144430C (zh) | 2004-03-31 |
| WO2000027083A1 (de) | 2000-05-11 |
| ID29202A (id) | 2001-08-09 |
| KR20010089314A (ko) | 2001-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 5A, 6A, 7A E 8A ANUIDADES. |
|
| B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1913 DE 04/09/2007. |