MX9704695A - Sistema de comunicaciones de fm/cdma de doble modo. - Google Patents
Sistema de comunicaciones de fm/cdma de doble modo.Info
- Publication number
- MX9704695A MX9704695A MX9704695A MX9704695A MX9704695A MX 9704695 A MX9704695 A MX 9704695A MX 9704695 A MX9704695 A MX 9704695A MX 9704695 A MX9704695 A MX 9704695A MX 9704695 A MX9704695 A MX 9704695A
- Authority
- MX
- Mexico
- Prior art keywords
- mode
- dual
- access
- signal during
- communication system
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
-
- 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
- H04L25/4904—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 self-synchronising codes, e.g. split-phase codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/142—Compensating direct current components occurring during the demodulation and which are caused by mistuning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
- H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings
-
- 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
- H04B2201/70707—Efficiency-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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)
- Transceivers (AREA)
- Circuits Of Receivers In General (AREA)
- Transmitters (AREA)
Abstract
En la presente se expone un sistema de comunicaciones digitales de doble modo para comunicar una señal de informacion durante la operacion en modos de frecuencia modulada (FM) y de multiple acceso. El sistema de comunicacion digital incluye un transmisor de doble modo 14 para transmitir la señal de informacion utilizando una señal de comunicacion de FM durante la operacion en modo de FM, y para transmitir la señal de informacion que utiliza una señal de comunicacion de multiple acceso durante la operacion en modo de multiple acceso. El sistema de comunicacion incluye además un receptor de doble modo 16 para recibir la señal de comunicacion de FM durante la operacion en modo de FM, y para recibir la señal de comunicacion de multiple acceso durante la operacion en modo de multiple acceso. Se incorpora dentro del receptor de doble modo 16 un demodulador digital 96 para recuperar la señal de informacion a partir de la señal de FM recibida durante la operacion en el modo de FM, y para recuperar la señal de informacion a partir de la señal de multiple acceso recibida durante la operacion en modo de multiple acceso.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37312294A | 1994-12-23 | 1994-12-23 | |
PCT/US1995/016363 WO1996020540A2 (en) | 1994-12-23 | 1995-12-19 | Dual-mode fm/cdma communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9704695A true MX9704695A (es) | 1997-10-31 |
Family
ID=23471060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9704695A MX9704695A (es) | 1994-12-23 | 1995-12-19 | Sistema de comunicaciones de fm/cdma de doble modo. |
Country Status (21)
Country | Link |
---|---|
US (1) | US5757858A (es) |
EP (1) | EP0799530B1 (es) |
JP (1) | JP3436372B2 (es) |
KR (1) | KR100427836B1 (es) |
CN (1) | CN1098569C (es) |
AR (1) | AR000415A1 (es) |
AT (1) | ATE264025T1 (es) |
AU (1) | AU700691B2 (es) |
BR (1) | BR9510534A (es) |
CA (1) | CA2208081C (es) |
DE (1) | DE69532863T2 (es) |
ES (1) | ES2222469T3 (es) |
FI (1) | FI972590A (es) |
HK (1) | HK1003689A1 (es) |
IL (1) | IL116475A (es) |
MX (1) | MX9704695A (es) |
MY (1) | MY114286A (es) |
RU (1) | RU2142205C1 (es) |
TW (1) | TW294867B (es) |
WO (1) | WO1996020540A2 (es) |
ZA (1) | ZA9510509B (es) |
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-
1995
- 1995-12-11 ZA ZA9510509A patent/ZA9510509B/xx unknown
- 1995-12-11 TW TW084113180A patent/TW294867B/zh active
- 1995-12-15 MY MYPI95003894A patent/MY114286A/en unknown
- 1995-12-19 WO PCT/US1995/016363 patent/WO1996020540A2/en active IP Right Grant
- 1995-12-19 CA CA002208081A patent/CA2208081C/en not_active Expired - Fee Related
- 1995-12-19 DE DE69532863T patent/DE69532863T2/de not_active Expired - Fee Related
- 1995-12-19 MX MX9704695A patent/MX9704695A/es not_active IP Right Cessation
- 1995-12-19 AU AU45998/96A patent/AU700691B2/en not_active Ceased
- 1995-12-19 AT AT95944116T patent/ATE264025T1/de not_active IP Right Cessation
- 1995-12-19 EP EP95944116A patent/EP0799530B1/en not_active Expired - Lifetime
- 1995-12-19 KR KR1019970704331A patent/KR100427836B1/ko not_active IP Right Cessation
- 1995-12-19 ES ES95944116T patent/ES2222469T3/es not_active Expired - Lifetime
- 1995-12-19 JP JP52049296A patent/JP3436372B2/ja not_active Expired - Fee Related
- 1995-12-19 RU RU97112204A patent/RU2142205C1/ru not_active IP Right Cessation
- 1995-12-19 CN CN95197705A patent/CN1098569C/zh not_active Expired - Fee Related
- 1995-12-19 BR BR9510534A patent/BR9510534A/pt not_active Application Discontinuation
- 1995-12-20 IL IL11647595A patent/IL116475A/xx active IP Right Revival
- 1995-12-21 AR AR33474695A patent/AR000415A1/es unknown
-
1997
- 1997-01-07 US US08/779,601 patent/US5757858A/en not_active Expired - Lifetime
- 1997-06-17 FI FI972590A patent/FI972590A/fi unknown
-
1998
- 1998-04-08 HK HK98102972A patent/HK1003689A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HK1003689A1 (en) | 1998-11-06 |
RU2142205C1 (ru) | 1999-11-27 |
CN1098569C (zh) | 2003-01-08 |
JPH10511525A (ja) | 1998-11-04 |
BR9510534A (pt) | 1998-07-14 |
CA2208081C (en) | 2004-05-25 |
JP3436372B2 (ja) | 2003-08-11 |
KR100427836B1 (ko) | 2004-10-14 |
ES2222469T3 (es) | 2005-02-01 |
FI972590A0 (fi) | 1997-06-17 |
WO1996020540A2 (en) | 1996-07-04 |
US5757858A (en) | 1998-05-26 |
IL116475A (en) | 1999-10-28 |
WO1996020540A3 (en) | 1996-09-06 |
AU4599896A (en) | 1996-07-19 |
CN1176715A (zh) | 1998-03-18 |
FI972590A (fi) | 1997-08-25 |
AU700691B2 (en) | 1999-01-14 |
DE69532863T2 (de) | 2005-03-31 |
ATE264025T1 (de) | 2004-04-15 |
CA2208081A1 (en) | 1996-07-04 |
MY114286A (en) | 2002-09-30 |
IL116475A0 (en) | 1996-03-31 |
AR000415A1 (es) | 1997-06-18 |
TW294867B (es) | 1997-01-01 |
EP0799530B1 (en) | 2004-04-07 |
ZA9510509B (en) | 1996-05-30 |
EP0799530A2 (en) | 1997-10-08 |
DE69532863D1 (de) | 2004-05-13 |
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