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公开(公告)号:DE69634389T2
公开(公告)日:2006-04-06
申请号:DE69634389
申请日:1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY R , KOWALSKI JOHN , OZLUTURK FATIH M , SILVERBERG AVI , REGIS ROBERT T , LUDDY MICHAEL , MARRA ALEXANDER , JACQUES ALEXANDER
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
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公开(公告)号:DE69634275T2
公开(公告)日:2006-01-05
申请号:DE69634275
申请日:1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY , OZLUTURK FAITH M , SILVERBERG AVI
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
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公开(公告)号:ES2146570T3
公开(公告)日:2005-07-16
申请号:ES99122098
申请日:1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY , OZLUTURK FATIH , SILVERBERG AVI
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
Abstract: Un módem CDMA incluye un transmisor módem que tiene: un generador de código que facilita una señal de código piloto asociada y que genera una pluralidad de señales código de mensaje; un circuito expansor que produce una señal de mensaje de espectro expandido mediante la combinación de cada una de las señales de información con una respectiva señal código de mensaje; y un generador de código de piloto global que facilita una señal código piloto global con la que se sincronizan las señales código de mensaje. El módem CDMA incluye también un receptor módem que tiene un generador de código de piloto asociado y un grupo de correladores de código de piloto asociados para correlacionar las versiones retardadas de código-fase de la señal piloto asociada con una señal CDM recibida para producir una señal piloto asociada desexpandida. La fase de código de la señal piloto asociada se cambia sensible a un valor de señal de adquisición hasta que se reciba una señal piloto. La lógica de seguimiento de código piloto de piloto asociado ajusta la señal código piloto asociada en fase sensible a la señal de adquisición de forma que se maximiza el nivel de potencia de señal de la señal código piloto asociada desexpandida. Finalmente, el receptor módem CDMA incluye un grupo de circuitos de adquisición de señal de mensaje, incluyendo cada uno de ellos una pluralidad de correlacionadores de señal de mensaje recibidas que correlacionan la respectiva señal de código de mensaje recibida local con la señal CDM para producir una respectiva señal de mensaje recibida desexpandida.
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公开(公告)号:DK0986188T3
公开(公告)日:2005-06-06
申请号:DK99122098
申请日:1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY , SILVERBERG AVI , OZLUTURK FATIH
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
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公开(公告)号:AT289134T
公开(公告)日:2005-02-15
申请号:AT99122098
申请日:1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY , OZLUTURK FATIH , SILVERBERG AVI
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
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公开(公告)号:DK1158702T3
公开(公告)日:2005-01-10
申请号:DK01113684
申请日:1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY , OZLUTURK FATIH , SILVERBERG AVI
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24 , H04Q7/38
Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
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公开(公告)号:HK1062237A1
公开(公告)日:2004-10-21
申请号:HK04105173
申请日:2004-07-14
Applicant: INTERDIGITAL TECH CORP
Inventor: JACQUES ALEXANDER , KAZAKEVICH LEONID , SILVERBERG AVI
IPC: H03G3/20 , H04B20060101 , H03G20060101 , H03G3/30 , H04B1/16 , H04B7/005 , H04J3/00
Abstract: In a TDD wireless communication system between transmitters and associated receivers, automatic gain control of a receiver is only applied during the corresponding time slot within the TDD signal time frame architecture. Successive received signal strengths are measured and gain levels are stored as estimates for an initial gain level in future time slots of the TDD signal. Estimating techniques, such as averaging or trending of received signal strength over successive time slots, and averaging or trending of gain level settings, provide improved estimation of future initial gain levels.
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公开(公告)号:AT272275T
公开(公告)日:2004-08-15
申请号:AT01981554
申请日:2001-10-12
Applicant: INTERDIGITAL TECH CORP
Inventor: JACQUES ALEXANDER , KAZAKEVICH LEONID , SILVERBERG AVI
Abstract: In a TDD wireless communication system between transmitters and associated receivers, automatic gain control of a receiver is only applied during the corresponding time slot within the TDD signal time frame architecture. Successive received signal strengths are measured and gain levels are stored as estimates for an initial gain level in future time slots of the TDD signal. Estimating techniques, such as averaging or trending of received signal strength over successive time slots, and averaging or trending of gain level settings, provide improved estimation of future initial gain levels.
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公开(公告)号:DE02005245T1
公开(公告)日:2004-04-15
申请号:DE02005245
申请日:1996-06-27
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY R , KOWALSKI JOHN , OZLUTURK FATIH M , SILVERBERG AVI , REGIS ROBERT T , LUDDY MICHAEL , MARRA ALEXANDER , JACQUES ALEXANDER
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24 , H04Q7/36
Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
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公开(公告)号:AR033950A2
公开(公告)日:2004-01-21
申请号:ARP000103525
申请日:2000-07-10
Applicant: INTERDIGITAL TECH CORP
Inventor: LOMP GARY , KOWALSKI ADAM JAN , OZLUTURK FATIH M , SILVERBERG AVI , REGIS ROBERT , MARRA ALEXANDER , JACQUES ALEXANDER , LUDDY MICHAEL
IPC: H03K3/84 , G06F13/374 , H03H17/02 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/709 , H04B1/7093 , H04B1/711 , H04B1/7115 , H04B1/712 , H04B7/005 , H04B7/216 , H04B7/26 , H04B15/00 , H04B17/00 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/12 , H04J13/16 , H04K1/00 , H04L1/00 , H04L5/14 , H04L7/00 , H04L7/033 , H04L25/02 , H04L27/00 , H04L27/20 , H04L27/233 , H04L27/30 , H04N1/333 , H04W52/04 , H04W52/14 , H04W52/24
Abstract: Comunicaciones de acceso múltiple por división de códigos (Code Division Multiple Access (CDMA)), conocidas también como comunicaciones de banda ancha. Una unidad de abonado para un sistema de comunicación de banda ancha, de múltiple acceso, que recibe y procesa una senal en multiplex por división de código (CDM) que modula una senal portadora en un canal de radiofrecuencia (RF) para reconstruir una senal de información transmitida asignada a un abonado, que comprende: elementos de recepción para recibir la senal portadora modulada del canal de RF y para desmodular la senal CDM de la senal portadora, un controlador de la unidad del abonado; elementos procesadores de módem que comprenden: a) elementos de adquisición de código piloto global que comprenden un elemento de generación de código piloto global para proveer una senal de código piloto global; numerosos elementos de correlación de fase retardada de código piloto global para correlacionar la senal de código piloto global con la senal CDM para producir una senal de código piloto global desexpandida, habiéndose cambiado la fase de código de la senal piloto global que responde a una senal de adquisición; y elementos para determinar si la senal piloto global desexpandida está presente para producir una senal de adquisición; b) numerosos generadores de código de mensaje que producen numerosas senales de código de mensajes sincronizadas con la senal de código piloto global; y c) elementos de seguimiento de código piloto global para producir una senal de error que responde a la senal de adquisición; d) elementos para ajustar la senal de código piloto global en fase, que responde a la senal de error en un sentido para producir la senal de adquisición que corresponde a un nivel aumentado de la senal piloto global desexpandida; y e) numerosos elementos de adquisición de senales de mensaje para proveer numerosas senales de mensaje de recepción desexpandida, incluyendo cada elemento de adquisición numerosos correlacionadores de senales de mensaje, correlacionando cada correlacionador de senales de mensaje una de las respectivas senales de código de mensaje con la senal CDM para producir una senal de mensaje de recepción desexpandida respectiva.
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