ES2003951A6 - Aparato telefonico digital inalambrigo de abonado para conectar a una central de base - Google Patents
Aparato telefonico digital inalambrigo de abonado para conectar a una central de baseInfo
- Publication number
- ES2003951A6 ES2003951A6 ES8603224A ES8603224A ES2003951A6 ES 2003951 A6 ES2003951 A6 ES 2003951A6 ES 8603224 A ES8603224 A ES 8603224A ES 8603224 A ES8603224 A ES 8603224A ES 2003951 A6 ES2003951 A6 ES 2003951A6
- Authority
- ES
- Spain
- Prior art keywords
- signal
- modem processor
- signals
- processor
- frequency correction
- 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
Links
- 230000000977 initiatory effect Effects 0.000 abstract 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
- H04M1/72502—Cordless telephones with one base station connected to a single line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/006—Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/06—Non-recursive filters
- H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
- H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
- H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
- H03H17/0657—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is higher than the input sampling frequency, i.e. interpolation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
-
- 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
- H04B1/50—Circuits using different frequencies for the two directions of communication
-
- 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
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
-
- 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
- H04L27/2338—Demodulator circuits; Receiver circuits using non-coherent demodulation using sampling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/005—Analog to digital conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/0052—Digital to analog conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/0054—Digital filters
- H03D2200/0058—Digital filters using a digital filter with interpolation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/006—Signal sampling
- H03D2200/0062—Computation of input samples, e.g. successive samples
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0041—Functional aspects of demodulators
- H03D2200/0082—Quadrature arrangements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
APARATO TELEFONICO DIGITAL INALAMBRICO DE ABONADO PARA CONECTAR A UNA CENTRAL DE BASE, QUE TIENE UN PROCESADOR DE BANDA DE BASE Y ACOPLADO A MEDIOS DE ALMACENAMIENTO PARA LAS FUNCIONES DE DICHA BASE. EL PROCESO ESTA ACOPLADO A UN PROCESADOR DE MODEM PUDIENDO COMUNICARSE AMBOS, ACTUANDO EL DE MODEM COMO PRINCIPAL DEL SISTEMA. LA SEÑAL DE ESTE, ES CONVERTIDA EN ANALOGICA, SOMETIDA A ELIMINACION DE RAFAGAS Y LUEGO CONVERTIDA Y FILTRADA PARA FORMAR UNA SEÑAL RF POSTERIORMENTE AMPLIFICADA. ESTA SE COMBINA CON OTRA GENERADA EN SINTETIZADOR PARA LOGRAR SEÑAL RF. BASANDOSE EN SEÑALES RECIBIDAS DE CENTRAL BASE, EL PROCESADOR PRODUCE SEÑALES QUE DETERMINAN LA MODALIDAD, TRANSITO O RECEPCION, DEL APARATO DEL ABONADO. EXISTE UNA MODALIDAD DE PREPARACION, EN LOS INTERVALOS ENTRE ACTUACION DEL SISTEMA, COMPARANDO SEÑALES DE RETROCIRCUITO CON OTRAS CONOCIDAS PARA PRODUCIR CONSTANTES DE CORRECCION ALMACENADAS PARA SUUTILIZACION EN SEÑALES REALES. IGUALMENTE EXISTE UN SISTEMA EN FORMA DE MUESTRAS I Y Q MULTIPLEXADAS POR TIEMPO PARA REDUCIR ENTONCES EN TEMPORIZACION DEL SISTEMA Y EN SALIDA DEL SINTETIZADOR.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/893,916 US4825448A (en) | 1986-08-07 | 1986-08-07 | Subscriber unit for wireless digital telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2003951A6 true ES2003951A6 (es) | 1988-12-01 |
Family
ID=25402332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES8603224A Expired ES2003951A6 (es) | 1986-08-07 | 1986-11-28 | Aparato telefonico digital inalambrigo de abonado para conectar a una central de base |
Country Status (28)
Country | Link |
---|---|
US (10) | US4825448A (es) |
JP (3) | JPH0773384B2 (es) |
KR (1) | KR900005142B1 (es) |
CN (1) | CN1009610B (es) |
AR (1) | AR244479A1 (es) |
AT (1) | AT404203B (es) |
AU (10) | AU570152B1 (es) |
BE (1) | BE905822A (es) |
BR (1) | BR8701441A (es) |
CA (3) | CA1263900A (es) |
CH (1) | CH674435A5 (es) |
DK (1) | DK175148B1 (es) |
ES (1) | ES2003951A6 (es) |
FI (1) | FI85077C (es) |
FR (10) | FR2602622B1 (es) |
GB (10) | GB2194711B (es) |
GR (1) | GR871236B (es) |
HK (1) | HK64194A (es) |
IE (1) | IE67260B1 (es) |
IL (1) | IL80497A (es) |
IN (1) | IN170912B (es) |
IT (1) | IT1207336B (es) |
MX (1) | MX164955B (es) |
NL (8) | NL192170C (es) |
NO (1) | NO172090C (es) |
PT (1) | PT85503B (es) |
SE (5) | SE8604661L (es) |
TR (1) | TR23782A (es) |
Families Citing this family (91)
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BE1004074A3 (fr) * | 1987-07-08 | 1992-09-22 | Internat Mobile Machines Corp | Dispositif d'initialisation d'une voie de communication entre un poste d'abonne et une station de base dans un systeme de communication. |
US5930297A (en) * | 1989-11-20 | 1999-07-27 | Interdigital Technology Corporation | Base station emulator |
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US7106819B1 (en) * | 1987-11-20 | 2006-09-12 | Interdigital Technology Corporation | Plural subscriber system utilizing synchronized timeslots on a single frequency |
US5031230A (en) * | 1988-10-24 | 1991-07-09 | Simulcomm Partnership | Frequency, phase and modulation control system which is especially useful in simulcast transmission systems |
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US5008900A (en) * | 1989-08-14 | 1991-04-16 | International Mobile Machines Corporation | Subscriber unit for wireless digital subscriber communication system |
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- 1986-10-23 IN IN937/DEL/86A patent/IN170912B/en unknown
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- 1987-11-18 AU AU81368/87A patent/AU577987B2/en not_active Expired
- 1987-11-18 AU AU81369/87A patent/AU576991B2/en not_active Expired
- 1987-11-18 AU AU81371/87A patent/AU579782B2/en not_active Expired
- 1987-11-18 AU AU81364/87A patent/AU579778B2/en not_active Expired
- 1987-11-18 AU AU81365/87A patent/AU579779B2/en not_active Expired
-
1988
- 1988-10-12 US US07/256,579 patent/US4994802A/en not_active Expired - Lifetime
- 1988-10-12 US US07/256,577 patent/US5177741A/en not_active Expired - Lifetime
- 1988-10-12 US US07/256,580 patent/US4943983A/en not_active Expired - Lifetime
- 1988-10-12 US US07/256,420 patent/US5101418A/en not_active Expired - Lifetime
- 1988-10-12 US US07/256,416 patent/US4996697A/en not_active Expired - Lifetime
- 1988-10-12 US US07/256,557 patent/US4881240A/en not_active Expired - Lifetime
- 1988-10-12 US US07/256,415 patent/US4893317A/en not_active Expired - Lifetime
-
1989
- 1989-08-16 CA CA000608565A patent/CA1319957C/en not_active Expired - Lifetime
- 1989-09-15 CA CA000611685A patent/CA1272317A/en not_active Expired - Lifetime
-
1990
- 1990-12-18 NL NL9002798A patent/NL9002798A/nl not_active Application Discontinuation
- 1990-12-18 NL NL9002803A patent/NL9002803A/nl unknown
- 1990-12-18 NL NL9002805A patent/NL9002805A/nl not_active Application Discontinuation
- 1990-12-18 NL NL9002801A patent/NL9002801A/nl not_active Application Discontinuation
- 1990-12-18 NL NL9002806A patent/NL9002806A/nl not_active Application Discontinuation
- 1990-12-18 NL NL9002800A patent/NL9002800A/nl not_active Application Discontinuation
- 1990-12-18 NL NL9002802A patent/NL9002802A/nl not_active Application Discontinuation
-
1992
- 1992-03-13 US US07/853,334 patent/US5159705A/en not_active Expired - Lifetime
-
1994
- 1994-06-22 US US08/264,200 patent/US5842137A/en not_active Expired - Lifetime
- 1994-06-23 SE SE9402221A patent/SE518848C2/sv not_active IP Right Cessation
- 1994-07-07 HK HK64194A patent/HK64194A/xx not_active IP Right Cessation
-
1996
- 1996-08-16 JP JP08234687A patent/JP3110681B2/ja not_active Expired - Lifetime
-
1998
- 1998-01-28 JP JP03049698A patent/JP3345334B2/ja not_active Expired - Lifetime
-
1999
- 1999-06-03 SE SE9902040A patent/SE523252C2/sv not_active IP Right Cessation
-
2004
- 2004-01-23 SE SE0400130A patent/SE527060C2/sv not_active IP Right Cessation
- 2004-08-03 SE SE0401973A patent/SE528439C2/sv not_active IP Right Cessation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
SA6 | Expiration date (snapshot 920101) |
Free format text: 2006-11-28 |
|
FD1A | Patent lapsed |
Effective date: 20061129 |