公开(公告)号：NO20021307L

公开(公告)日：2002-05-15

申请号：NO20021307

申请日：2002-03-15

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER ,  LUBECKI TIMOTHY J ,  ZEIRA ARIELA

IPC: H04B1/707

Abstract: A multiuser detector method and receiver that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser receiver is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The receiver and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention when used in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.

公开(公告)号：NO20021307A

公开(公告)日：2002-05-15

申请号：NO20021307

申请日：2002-03-15

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER ,  LUBECKI TIMOTHY J ,  ZEIRA ARIELA

IPC: H04B1/707

CPC classification number: H04B1/7105 ,  H04B1/7093 ,  H04B1/71052 ,  H04B2201/70703 ,  H04B2201/70705

公开(公告)号：NO20021307D0

公开(公告)日：2002-03-15

申请号：NO20021307

申请日：2002-03-15

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER ,  LUBECKI TIMOTHY J ,  ZEIRA ARIELA

IPC: H04B1/707 ,  H04B

Abstract: A multiuser detector method and receiver that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser receiver is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The receiver and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention when used in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.

公开(公告)号：CA2388024A1

公开(公告)日：2001-04-26

申请号：CA2388024

申请日：2000-02-11

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER

IPC: H04B1/707 ,  H04B1/7093 ,  H04B1/7103 ,  H04B1/7105 ,  H04B1/7107 ,  H04B3/06 ,  H04B7/005

Abstract: A receiver that reduces impulse response interference using a model of the received signal similar to that used in block linear equalizers. Block linea r equalizers comprise decorrelating receivers, zero-forcing receivers, minimum mean square error receivers and the like. The invention comprises an interference computation processor feedback loop (43) for correcting the output of a direct interference canceller (39). The m iterative process removes interferers from the output symbols of a matched-filter (35). The receiver uses received signal models of the various block linear equalizers that do not assume that each subchannel consists of several distinct paths. The receiver ertimates the impulse response characteristic of each subchanne l as a whole.

公开(公告)号：MY158156A

公开(公告)日：2016-09-15

申请号：MYPI20093219

申请日：2008-02-05

Applicant: INTERDIGITAL TECH CORP

Inventor： CAVE CHRISTOPHER R ,  DIGIROLAMO ROCCO ,  PANI DIANA ,  REZNIK ALEXANDER

IPC: H04W68/02 ,  H04W52/02

Abstract: PAGING IN A HSDPA CONNECTED MODE CELL-PCH OR URA-PCH STATE. A WTRU IS CONFIGURED TO SELECT VARIOUS PICH INFORMATION THAT IS BROADCAST BY A BASE STATION (415) (IN THE HSDPA ASSOCIATED PICH INFO' INFORMATION ELEMENT OF A SYSTEM INFORMATION BLOCK 5/5BIS) BY COMPILING A LIST OF CABDIDATE PICHS, AND SELECTING A PICH INFO BASED ON THE U-RNTI OF THE WTRU. THE WTRU IS CONFIGURED TO RECEIVE PAGING MESSAGES, BASED ON THE SELECTED PICH INFORMATION. IN ONE EMBODIMENT, A PREFERRED WTRU IS CONFIGURED TO RECEIVE PAGING MESSAGES, BASED ON A PICH, A HS-SCCH, AND A HS-PDSCH. IN ANOTHER EMBODIMENT, A PREFERRED WTRU IS CONFIGURED TO RECEIVE PAGING MESSAGES, BASED ON A PICH AND A HS-PDSCH. IN BOTH EMBODIMENTS, A TIME DELAY PARAMETER (FOR TIMING THE TRANSMISSION OF THE PICH AND THE TRANSMISSION OF A PAGING MESSAGE) IS PREFERABLY USED SO THAT THE WTRU MAY LISTEN FOR EITHER THE HS-SCCH OR HS-PDSCH FOR A PERIOD OF TIME AND RETURN TO A SLEEP MODE IF NO PAGING MESSAGE IS RECEIVED. THE MOST ILLUSTRATIVE DRAWING IS FIG.6

公开(公告)号：CA2625425C

公开(公告)日：2013-04-02

申请号：CA2625425

申请日：2001-02-02

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ARIELA ,  ZEIRA ELDAD ,  REZNIK ALEXANDER ,  TERRY STEPHEN E

IPC: H04B7/204 ,  H04B7/212 ,  H04B7/216 ,  H04W74/00

Abstract: A wireless time division duplex communication system using code division multiple access has a base station and user equipments. The system communicates using communication bursts. Each communication burst has a unique channelization code and a midamble code. Each midamble code is mapped to a set of at least one channelization code. For each communication burst to be transmitted in a time slot from the base station, the midamble code mapped to that burst's channelization code is determined. Communication bursts are generated and transmitted in the time slot. Each burst has the determined midamble code for its channelization code. The user equipment receives the bursts and determines each received midamble code. The user equipment determines the channelization codes of the transmitted communication bursts based on in part a result of the determining of each received midamble code.

公开(公告)号：HK1139272A1

公开(公告)日：2010-09-10

申请号：HK10105853

申请日：2010-06-11

Applicant: INTERDIGITAL TECH CORP

Inventor： CAVE CHRISTOPHER R ,  DIGIROLAMO ROCCO ,  PANI DIANA ,  REZNIK ALEXANDER

IPC: H04W20090101 ,  H04W52/02 ,  H04W68/02

Abstract: A method and a wireless transmit/receive unit, WTRU, to facilitate paging in high speed downlink packet access, HSDPA, wireless communications, the method comprising: when the WTRU is in one of a CELL PCH and URA PCH state: receiving, from a base station, HSDPA associated paging indicator channel, PICH, information elements comprising PICH information; compiling a list of candidate PICHs for HSDPA after receiving the information element; determining a value k corresponding to a number of candidates; calculating a selection index equal to:U_RNTI mod k, where U RNTI is a universal mobile telecommunications system (UMTS) terrestrial radio access network (UTRAN) radio network transaction identity (U-RNTI) of the WTRU; selecting a PICH information from the list of candidate PICHs based on the selection index; awakening from a sleep mode during paging occasions derived from the PICH information; monitoring for a paging indicator over a PICH using the selected PICH information; monitoring for a high speed dedicated shared channel, HS-DSCH, radio network transaction identity, H-RNTI; monitoring a high speed shared channel using the received H-RNTI; and returning to the sleep mode, if no H-RNTI is received.

公开(公告)号：ES2342062T3

公开(公告)日：2010-07-01

申请号：ES04018949

申请日：2000-09-11

Applicant: INTERDIGITAL TECH CORP

Inventor： MESECHER DAVID K ,  REZNIK ALEXANDER ,  GRIECO DONALD ,  CHEUNG GARY

IPC: H04B1/712 ,  H04B7/06 ,  H04B7/08 ,  H04B7/216 ,  H04B7/26 ,  H04J13/00 ,  H04M1/725 ,  H04Q7/38

Abstract: Método para recibir una señal de tráfico en un sistema de comunicación de acceso múltiple por división de código, el sistema transmitiendo una señal de tráfico sobre un espectro compartido, la señal de tráfico teniendo un código asociado, el método comprendiendo: recibir (502) las señales sobre el espectro compartido que incluyen la señal de tráfico y una señal de referencia, la señal de referencia teniendo un código de referencia asociado, donde la señal de referencia incluye una señal piloto y el código de referencia incluye un código piloto; muestrear (512; 514) las señales recibidas a una velocidad de chip para producir primeras muestras y muestras que son igualmente retrasadas por un intervalo de medio chip la una con respecto a la otra; desexpandir (504; 508) las respectivas primera y segunda muestras con el código de referencia y producir respectivos componentes desexpandidos de la señal recibida a partir de éstas; determinar un peso para cada componente desexpandido usando un algoritmo adaptativo (506), el algoritmo adaptativo proporcionando una determinación de un peso refinado para cada componentes desexpandido para minimizar la interferencia en la señal piloto recibida; y filtrar adaptativamente (510) las señales recibidas utilizando el código asociado de la señal de tráfico y los pesos refinados para producir los datos de la señal de tráfico.

公开(公告)号：SG161102A1

公开(公告)日：2010-05-27

申请号：SG2007031123

申请日：2001-02-02

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ARIELA ,  ZEIRA ELDAD ,  REZNIK ALEXANDER ,  TERRY STEPHEN E

IPC: H04B1/707 ,  H04B1/7073 ,  H04B1/7093 ,  H04B1/7103 ,  H04B1/7105 ,  H04B7/00 ,  H04J3/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/16 ,  H04Q7/38 ,  H04J13/04

Abstract: A wireless time division duplex communication system using code division multiple access has a base station and user equipments. The system communicates using communication bursts. Each communication burst has a unique channelization code and a midamble code. Each midamble code is mapped to a set of at least one channelization code. For each communication burst to be transmitted in a time slot from the base station, the midamble code mapped to that burst's channelization code is determined. Communication bursts are generated and transmitted in the time slot. Each burst has the determined midamble code for its channelization code. The user equipment receives the bursts and determines each received midamble code. The user equipment determines the channelization codes of the transmitted communication bursts based on in part a result of the determining of each received midamble code.

公开(公告)号：MX2009008326A

公开(公告)日：2010-02-18

申请号：MX2009008326

申请日：2008-02-05

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER ,  CAVE CHRISTOPHER R ,  DIGIROLAMO ROCCO ,  PANI DIANA

IPC: H04W68/02 ,  H04W52/02

Abstract: Paginación en un modo de estado CELL-PCH o URA-PCH conectado a HSDPA. Una WTRU es configurada para seleccionar diversa información del PICH que es emitida por una estación base (en el elemento de información PICH info" asociado con HSDPA de un bloque 5/5bis de un Sistema de Información) mediante la compilación de una lista de PICHs candidatos, y la selección de un PICH info con base en la U-RNTI de la WTRU. La WTRU se configura para recibir mensajes de paginación, con base en la información PICH seleccionada. En una representación, una WTRU preferida se configura para recibir los mensajes de paginación, con base en un PICH, un HS-SCCH y un HS-PDSCH. En otra representación, una WTRU preferida se configura para recibir mensajes de paginación, con base en un PICH y un HS-PDSCH. En ambas representaciones, se usa preferiblemente un parámetro de demora de tiempo (para cronometrar la transmisión del PICH y la transmisión de un mensaje de paginación) de manera que la WTRU pueda escuchar a cualquiera del HS-SCCH o del HS-PDSCH durante un periodo de tiempo y regresar a un modo de espera si no se recibe el mensaje de paginación.