AR006417A1 - Metodo y aparato para desmodulacion y deteccion de bits de control de potencia en un sistema de comunicaciones de espectro extendido - Google Patents
Metodo y aparato para desmodulacion y deteccion de bits de control de potencia en un sistema de comunicaciones de espectro extendidoInfo
- Publication number
- AR006417A1 AR006417A1 ARP970101233A ARP970101233A AR006417A1 AR 006417 A1 AR006417 A1 AR 006417A1 AR P970101233 A ARP970101233 A AR P970101233A AR P970101233 A ARP970101233 A AR P970101233A AR 006417 A1 AR006417 A1 AR 006417A1
- Authority
- AR
- Argentina
- Prior art keywords
- channel
- power control
- estimate
- demodulation
- detection
- Prior art date
Links
Classifications
-
- 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
- H04B1/7073—Synchronisation aspects
- H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
- H04W52/60—Signalisation aspects of the TPC commands, e.g. frame structure using different transmission rates for TPC commands
-
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
-
- 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
- H04L25/0212—Channel estimation of impulse response
- H04L25/0214—Channel estimation of impulse response of a single coefficient
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
-
- 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
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
Un circuito receptor (400, 500) recibe una senal de comunicaciones de espectro extendido, por ejemplo una senal de comunicaciones de espectroextendido, por ejemplo una senal de DS-CDMA, que incluye un canal piloto y un asignador de controlde potencia. La senal es reducida y decodificada. Lossímbolos piloto en el canal piloto son provistos a un estimador de canal (408) para estimar la fase de canal y la ganancia de canal de comunicaciones. Estaestimación es provista a un desmodulador(4 22) para desmodular los símbolos de canal de tráfico. Los símbolos piloto son provistos a otro estimadorde canal (410) para estimar la fase de canal y la ganancia de canal para el asignador de control de potencia. Esta estimación esprovista a undesmodulador (424) para desmodular el asignador de control de potencia. Los símbolos de canal de tráfico son retardados un tiempo predeterminado en unelemento de retardo (420) antes de su desmodulación. El asignador de control depotencia es retardado un breve lapso o no es retardado en absoluto en unelemento de retardo corto (418) antes de su desmodulación.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/624,329 US5737327A (en) | 1996-03-29 | 1996-03-29 | Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
AR006417A1 true AR006417A1 (es) | 1999-08-25 |
Family
ID=24501573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP970101233A AR006417A1 (es) | 1996-03-29 | 1997-03-26 | Metodo y aparato para desmodulacion y deteccion de bits de control de potencia en un sistema de comunicaciones de espectro extendido |
Country Status (9)
Country | Link |
---|---|
US (1) | US5737327A (es) |
JP (1) | JP3091711B2 (es) |
KR (1) | KR100243720B1 (es) |
CN (1) | CN1084092C (es) |
AR (1) | AR006417A1 (es) |
DE (2) | DE19712830B4 (es) |
FR (1) | FR2746990B1 (es) |
GB (1) | GB2311702B (es) |
MX (1) | MX9702273A (es) |
Families Citing this family (86)
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US20130142520A1 (en) * | 2008-06-30 | 2013-06-06 | Chuan Xie | Anti-causal pre-emphasis for high speed optical transmission |
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FR3071984B1 (fr) * | 2017-09-29 | 2021-10-29 | Alstom Transp Tech | Module de correction d'une fonction de transfert d'un canal de transmission d'un systeme de communication cdma, recepteur et procede associes |
CN107863936A (zh) * | 2017-12-15 | 2018-03-30 | 成都爱科特科技发展有限公司 | 一种超低相位噪声频率源电路及其制造方法 |
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US4901307A (en) * | 1986-10-17 | 1990-02-13 | Qualcomm, Inc. | Spread spectrum multiple access communication system using satellite or terrestrial repeaters |
US5107487A (en) * | 1991-05-28 | 1992-04-21 | Motorola, Inc. | Power control of a direct sequence CDMA radio |
DE4139567A1 (de) * | 1991-11-30 | 1993-06-03 | Aeg Mobile Communication | Digitales funk-nachrichtenuebertragungsverfahren |
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-
1996
- 1996-03-29 US US08/624,329 patent/US5737327A/en not_active Expired - Lifetime
-
1997
- 1997-03-20 FR FR9703405A patent/FR2746990B1/fr not_active Expired - Lifetime
- 1997-03-21 GB GB9705960A patent/GB2311702B/en not_active Expired - Lifetime
- 1997-03-25 JP JP09090149A patent/JP3091711B2/ja not_active Expired - Lifetime
- 1997-03-26 MX MX9702273A patent/MX9702273A/es unknown
- 1997-03-26 AR ARP970101233A patent/AR006417A1/es active IP Right Grant
- 1997-03-26 DE DE19712830A patent/DE19712830B4/de not_active Expired - Lifetime
- 1997-03-26 DE DE19758850.6A patent/DE19758850B4/de not_active Expired - Lifetime
- 1997-03-28 KR KR1019970011223A patent/KR100243720B1/ko not_active IP Right Cessation
- 1997-03-28 CN CN97103733A patent/CN1084092C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5737327A (en) | 1998-04-07 |
JP3091711B2 (ja) | 2000-09-25 |
FR2746990B1 (fr) | 2001-10-26 |
KR970068220A (ko) | 1997-10-13 |
KR100243720B1 (ko) | 2000-02-01 |
DE19712830B4 (de) | 2005-12-08 |
JPH1032560A (ja) | 1998-02-03 |
GB2311702A (en) | 1997-10-01 |
CN1185063A (zh) | 1998-06-17 |
FR2746990A1 (fr) | 1997-10-03 |
DE19712830A1 (de) | 1997-11-06 |
GB2311702B (en) | 2000-07-26 |
MX9702273A (es) | 1998-04-30 |
CN1084092C (zh) | 2002-05-01 |
GB9705960D0 (en) | 1997-05-07 |
DE19758850B4 (de) | 2015-01-22 |
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