BR9808543A - Sondagem com ponderação temporal de um canal de transmissão - Google Patents
Sondagem com ponderação temporal de um canal de transmissãoInfo
- Publication number
- BR9808543A BR9808543A BR9808543-3A BR9808543A BR9808543A BR 9808543 A BR9808543 A BR 9808543A BR 9808543 A BR9808543 A BR 9808543A BR 9808543 A BR9808543 A BR 9808543A
- Authority
- BR
- Brazil
- Prior art keywords
- transmission channel
- polling
- received signal
- channel
- time weighting
- Prior art date
Links
Classifications
-
- 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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
-
- 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
- H04B1/76—Pilot transmitters or receivers for control of transmission or for equalising
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Small-Scale Networks (AREA)
- Noise Elimination (AREA)
Abstract
Patente de Invenção:<B>Patente de Invenção: "SONDAGEM COM PONDERAçãO TEMPORAL DE UM CANAL DE TRANSMISSãO"<D>. A invenção refere-se a um processo de sondagem de um canal de transmissão, a partir de um sinal recebido (S) por esse canal. O sinal recebido corresponde a uma seq³encia de aprendizagem emitida, e o processo compreende as seguintes etapas: aquisição de uma estatística do canal de transmissão, estabelecimento de uma estimativa (Xp) da resposta impulsional do canal ponderada pela estatística do canal do meio do sinal recebido (S).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9704933A FR2762164B1 (fr) | 1997-04-14 | 1997-04-14 | Sondage a ponderation temporelle d'un canal de transmission |
PCT/FR1998/000734 WO1998047239A1 (fr) | 1997-04-14 | 1998-04-10 | Sondage a ponderation temporelle d'un canal de transmission |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9808543A true BR9808543A (pt) | 2001-06-19 |
Family
ID=9506161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9808543-3A BR9808543A (pt) | 1997-04-14 | 1998-04-10 | Sondagem com ponderação temporal de um canal de transmissão |
Country Status (7)
Country | Link |
---|---|
US (1) | US6671313B1 (pt) |
EP (1) | EP0985280A1 (pt) |
CN (1) | CN1256814A (pt) |
BR (1) | BR9808543A (pt) |
CA (1) | CA2286556A1 (pt) |
FR (1) | FR2762164B1 (pt) |
WO (1) | WO1998047239A1 (pt) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2821502A1 (fr) * | 2001-02-27 | 2002-08-30 | Thomson Csf | Procede et dispositif d'estimation d'un canal de propagation a partir de ses statistiques |
US7058147B2 (en) * | 2001-02-28 | 2006-06-06 | At&T Corp. | Efficient reduced complexity windowed optimal time domain equalizer for discrete multitone-based DSL modems |
KR100615889B1 (ko) * | 2001-12-29 | 2006-08-25 | 삼성전자주식회사 | 송/수신 다중 안테나를 포함하는 이동 통신 장치 및 방법 |
US7065371B1 (en) * | 2003-02-20 | 2006-06-20 | Comsys Communication & Signal Processing Ltd. | Channel order selection and channel estimation in wireless communication system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5263026A (en) * | 1991-06-27 | 1993-11-16 | Hughes Aircraft Company | Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver |
US5432816A (en) * | 1992-04-10 | 1995-07-11 | International Business Machines Corporation | System and method of robust sequence estimation in the presence of channel mismatch conditions |
FR2696604B1 (fr) * | 1992-10-07 | 1994-11-04 | Alcatel Radiotelephone | Dispositif d'estimation d'un canal de transmission. |
FR2708162B1 (fr) * | 1993-07-20 | 1995-09-01 | Alcatel Mobile Comm France | Procédé pour déterminer la longueur optimale d'un bloc de données dans un système de communication à accès multiple à répartition dans le temps (AMRT). |
FR2715488B1 (fr) * | 1994-01-21 | 1996-03-22 | Thomson Csf | Procédé et dispositif permettant à un modem de se synchroniser sur un transmetteur de données numériques par voie hertzienne en présence de brouilleurs. |
FR2718306B1 (fr) * | 1994-03-31 | 1996-04-26 | Alcatel Mobile Comm France | Procédé d'adaptation de l'interface air, dans un système de radiocommunication vers des mobiles. |
FR2719961B1 (fr) * | 1994-05-11 | 1996-06-21 | Alcatel Mobile Comm France | Dispositif d'estimation de la qualité d'un canal de transmission et utilisation correspondante. |
US5513221A (en) * | 1994-05-19 | 1996-04-30 | Hughes Aircraft Company | Doppler bandwidth dependent estimation of a communications channel |
US6101399A (en) * | 1995-02-22 | 2000-08-08 | The Board Of Trustees Of The Leland Stanford Jr. University | Adaptive beam forming for transmitter operation in a wireless communication system |
-
1997
- 1997-04-14 FR FR9704933A patent/FR2762164B1/fr not_active Expired - Fee Related
-
1998
- 1998-04-10 US US09/402,956 patent/US6671313B1/en not_active Expired - Lifetime
- 1998-04-10 CA CA002286556A patent/CA2286556A1/fr not_active Abandoned
- 1998-04-10 EP EP98920611A patent/EP0985280A1/fr not_active Withdrawn
- 1998-04-10 BR BR9808543-3A patent/BR9808543A/pt not_active IP Right Cessation
- 1998-04-10 CN CN98805137.0A patent/CN1256814A/zh active Pending
- 1998-04-10 WO PCT/FR1998/000734 patent/WO1998047239A1/fr not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CA2286556A1 (fr) | 1998-10-22 |
WO1998047239A1 (fr) | 1998-10-22 |
US6671313B1 (en) | 2003-12-30 |
FR2762164B1 (fr) | 1999-09-24 |
CN1256814A (zh) | 2000-06-14 |
FR2762164A1 (fr) | 1998-10-16 |
EP0985280A1 (fr) | 2000-03-15 |
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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,8A E 9A |
|
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 1892 DE 10/04/2007. |