公开(公告)号：BRPI0411388A

公开(公告)日：2006-07-18

申请号：BRPI0411388

申请日：2004-05-05

Applicant: INTERDIGITAL TECH CORP

Inventor： DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  HAQUE TANBIR

IPC: H03G3/30 ,  H04B1/16 ,  H04L25/66 ,  H04L25/10

Abstract: A communication system including an amplifier, a receiver, an analog to digital converter (ADC) and an insertion phase variation compensation module. The amplifier receives a communication signal. If the amplifier is enabled, the amplifier amplifies the communication signal and outputs the amplified communication signal to the receiver. If the amplifier is disabled, the amplifier passes the communication signal to the receiver without amplifying it. The receiver outputs an analog complex signal to the ADC. The ADC outputs a digital complex signal to the insertion phase variation compensation module which counteracts the effects of a phase offset intermittently introduced into the communication signal when the amplifier is enabled or disabled.

公开(公告)号：NO20060092L

公开(公告)日：2006-03-06

申请号：NO20060092

申请日：2006-01-06

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  HAQUE TANBIR ,  DEMIR ALPASLAN

IPC: H04B7/005 ,  H03G3/00 ,  H03G3/30 ,  H04B1/30 ,  H04L27/00 ,  H04L27/38

Abstract: A communication system including an automatic control (AGC) circuit, a receiver, an analog to digital converter (ADC) and an insertion phase variation compensation module. The AGC circuit receives and amplifies communication signals. The gain of the AGC circuit is continuously adjusted. The AGC circuit outputs an amplified signal to the receiver which, in turn, outputs an analog complex signal to the ADC. The ADC outputs a digital complex signal to an insertion phase variation compensation module which counteracts the effects of phase offsets introduced into the communication signal due to the continuous gain adjustments associated with the AGC circuit.

公开(公告)号：NO20060092A

公开(公告)日：2006-03-06

申请号：NO20060092

申请日：2006-01-06

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  HAQUE TANBIR ,  DEMIR ALPASLAN

IPC: H04B7/005 ,  H03G3/00 ,  H03G3/30 ,  H04B1/30 ,  H04L27/00 ,  H04L27/38

CPC classification number: H04L27/3809 ,  H03G3/001 ,  H03G3/3052 ,  H04B1/30 ,  H04L27/38 ,  H04L2027/003 ,  H04L2027/0046 ,  H04W52/52

公开(公告)号：NO20060057A

公开(公告)日：2006-02-01

申请号：NO20060057

申请日：2006-01-05

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  OZLUTURK FATIH M ,  DEMIR ALPASLAN ,  NARAYAN GEETHA LAKSHMI

IPC: H04B7/00 ,  H03D3/00 ,  H04B1/30

CPC classification number: H04B1/30 ,  H03D3/008

公开(公告)号：AR044593A1

公开(公告)日：2005-09-21

申请号：ARP040101911

申请日：2004-06-03

Applicant: INTERDIGITAL TECH CORP

Inventor： DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  OZLUTURK FATIH ,  NARAYAN GEETHA LAKSHMI

IPC: H03D3/00 ,  H04B1/30 ,  H04B7/00

Abstract: Un receptor de banda base digital (DBB) para recibir y procesar una señal de comunicación inalámbrica. El receptor DBB incluye al menos un amplificador de bajo ruido (LNA), al menos un demodulador, un circuito de descarga de corriente continua (DC) y un circuito de control de LNA. El LNA amplifica selectivamente la señal de comunicación. El demodulardor da salida a componentes análogos de señal real e imaginaria sobre pasos de señal real e imaginaria, respectivamente, en respuesta a la recepción de la señal de comunicación desde el LNA. El circuito de descarga DC selectivamente DC en acumulación sobre al menos uno de los pasos de señal real e imaginaria. El circuito de control de LNA activa y desactiva el LNA.

公开(公告)号：AR044592A1

公开(公告)日：2005-09-21

申请号：ARP040101910

申请日：2004-06-03

Applicant: INTERDIGITAL TECH CORP

Inventor： DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  KEARNEY KENNETH P

IPC: H03F1/32 ,  H04B1/04 ,  H04B15/00

Abstract: Para compensar una degradación de performance producida por tolerancias de componentes de radio análogo de bajo costo inferior de un radio análogo, un transmisor de comunicación inalámbrica emplea un procedimiento de control para implementar numerosas técnicas de procesamiento de señal digital (DSP) con el fin de compensar las deficiencias de dichos componentes análogos para poder flexibilizar las especificaciones modernas. Al monitorear una pluralidad de parámetros asociados con el radio análogo, como ser temperatura, corriente de polarización o similar, puede implementarse una compensación de amplitud y fase mejorada, así como también muchos otros parámetros de radiofrecuencia (RF).

公开(公告)号：NO20053873L

公开(公告)日：2005-08-18

申请号：NO20053873

申请日：2005-08-18

Applicant: INTERDIGITAL TECH CORP

Inventor： GRIECO DONALD M ,  HAIM JOHN W ,  BEDNARZ ANDREW F ,  DEMIR ALPASLAN

IPC: H04L12/56 ,  H04W48/02 ,  H04W48/10 ,  H04W48/16 ,  H04W56/00 ,  H04Q7/20 ,  H04Q7/36

Abstract: A method for performing initial cell search in wireless communication system wherein unsuitable cells includes searching stored frequencies exhaustively and initial frequencies non-exhaustively. Initial frequencies may be searched exhaustively in certain circumstances. When performing exhaustive initial cell searches, primary synchronization codes that lead to unsuitable cells are excluded from subsequent initial cell searches performed on the same frequency.

公开(公告)号：NO20052740L

公开(公告)日：2005-07-12

申请号：NO20052740

申请日：2005-06-08

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  OZLUTURK FATIH M ,  KEARNEY KENNETH P ,  HAQUE TANBIR ,  DEMIR ALPASLAN ,  NARAYAN GEETHA LAKSHMI

IPC: H03D3/00 ,  H03G3/00 ,  H03G3/30 ,  H04B1/30 ,  H04L27/00 ,  H04B17/00 ,  H04B7/005

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (AGC) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters.

公开(公告)号：CA2528534A1

公开(公告)日：2005-01-06

申请号：CA2528534

申请日：2004-04-30

Applicant: INTERDIGITAL TECH CORP

Inventor： HAQUE TANBIR ,  DEMIR ALPASLAN ,  KAZAKEVICH LEONID

IPC: H04L27/04 ,  H03C3/40 ,  H04B1/30 ,  H04L27/00

Abstract: A method and system for determining at least one DC offset compensation valu e used to suppress carrier leakage occurring on real (184) and imaginary (186) signal paths in an analog radio transmitter when a significant temperature change (168) in the transmitter is detected. At least one DC offset signal having a level that corresponds to the at least one DC offset compensation value is provided to a digital DC offset compensation module which adjusts t he DC level of at least one of the real and imaginary signal paths (184 and 186 ).

公开(公告)号：CA2528338A1

公开(公告)日：2005-01-06

申请号：CA2528338

申请日：2004-05-06

Applicant: INTERDIGITAL TECH CORP

Inventor： DEMIR ALPASLAN ,  KAZAKEVICH LEONID ,  HAQUE TANBIR

IPC: H04B1/06 ,  H03G3/00 ,  H03G3/30 ,  H04B1/30 ,  H04B7/00 ,  H04B7/005 ,  H04L25/10 ,  H04L27/00 ,  H04L27/08 ,  H04L27/38

Abstract: A communication system (100) including an automatic control (AGC) circuit (105), a receiver (110), an analog to digital (ADC) converter (115) and an insertion phase variation compensation module (120). The AGC circuit receive s and amplifies communication signals (150). The gain of the AGC circuit is adjusted. The AGC circuit outputsan amplified signal (145) to the receiver which, in turn, outputs an analog complex signal to the ADC (115). The ADC outputs a digital complex signal to the insertion phase variation compensati on module (120) which counteracts the effects of phase offsets introduced into the communication signal due to the continuous gain adjustments associated with the AGC circuit.