公开(公告)号：CA2480741A1

公开(公告)日：2003-10-23

申请号：CA2480741

申请日：2003-04-11

Applicant: INTERDIGITAL TECH CORP

Inventor： KOCH MICHAEL ,  HACKETT WILLIAM C ,  BOHNHOFF PETER ,  REZNIK ALEXANDER ,  HEPLER EDWARD L ,  BASS DAVID S ,  BERGHIUS TOMOTHY ,  MEYER JAN ,  KAEWELL JOHN DAVID JR

IPC: H04B7/04 ,  H04B7/08 ,  H04B7/26 ,  H04B1/707

Abstract: A Node-B/base station receiver comprises at least one antenna for receiving signals (2811-28MN). Each finger of a pool of reconfigurable Rake fingers (3 20- 323) recovers a multipath component of a user and is assigned a code of the user, a code phase of the multipath component and an antenna of the at least one antenna. An antenna/Rake finger pool interface (30) provides each finger of the Rake pool an output of the antenna assigned to that Rake finger. A combiner combines the recovered multipath components for a user to produce data of the user.

公开(公告)号：DE1252723T1

公开(公告)日：2003-05-28

申请号：DE01905346

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

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 (16). Each communication burst has a unique channelization code and a midamble code (20). 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：HK1045613A1

公开(公告)日：2002-11-29

申请号：HK02106957

申请日：2002-09-24

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 ,  H04B

Abstract: A receiving device comprising circuitry configured to receive a signal including pilot bits transmitted by a plurality of antennas; wherein the received signal includes data for a single user that was combined with different sequences producing a plurality of combined data sequences; wherein antenna-specific weights for the plurality of antennas are applied to each of the combined data sequences and the antenna specific weights are applied to pilot bits added with the combined data sequences; wherein the received signal includes the pilot bits for each of the plurality of antennas; and wherein the pilot bits for each antenna have a different sequence for that antenna; the circuitry is further configured to derive preferred weights for the received signal based on the pilot bits for each antenna; the circuitry is further configured to recover data for the single user from each of the combined data sequences; and the circuitry is further configured to combine data from the recovered data for the single user from each of the different sequences.

公开(公告)号：NO20081291L

公开(公告)日：2002-05-15

申请号：NO20081291

申请日：2008-03-11

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ARIELA ,  REZNIK ALEXANDER ,  LUBECKI TIMOTHY J

IPC: H04B1/707

Abstract: En flerbrukerdetektor som detekterer og dekoder synkrone eller asynkrone CDMA-delkanaler med forskjellige spredingsfaktorer med redusert beregningskompleksitet. Foreliggende flerbrukerdetektorer er kompatible med ZF-BLE, MMSE, dekorreleringsdetektorer og liknende ved bruk av Cholesky-dekomponering for å minimalisere numeriske operasjoner. Systemet og fremgangsmåten anordner kolonnene i systemtransmisjonsresponsmatrisene som representerer individuelle brukeres responskarakteristikker i en vel båndet totalsystemtransmisjonsresponsmatrise som representerer flere matchete filterresponser for en gitt blokk av mottatte data. I sammenheng med Cholesky-dekomponering, reduserer oppfinnelsen antallet av nødvendige matematiske operasjoner forut for parallell matchet filtrering.

公开(公告)号：NO20090123L

公开(公告)日：2002-05-03

申请号：NO20090123

申请日：2009-01-09

Applicant: INTERDIGITAL TECH CORP

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

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

Abstract: A receiving device comprising circuitry configured to receive a signal including pilot bits transmitted by a plurality of antennas; wherein the received signal includes data for a single user that was combined with different sequences producing a plurality of combined data sequences; wherein antenna-specific weights for the plurality of antennas are applied to each of the combined data sequences and the antenna specific weights are applied to pilot bits added with the combined data sequences; wherein the received signal includes the pilot bits for each of the plurality of antennas; and wherein the pilot bits for each antenna have a different sequence for that antenna; the circuitry is further configured to derive preferred weights for the received signal based on the pilot bits for each antenna; the circuitry is further configured to recover data for the single user from each of the combined data sequences; and the circuitry is further configured to combine data from the recovered data for the single user from each of the different sequences.

公开(公告)号：AU4490700A

公开(公告)日：2001-11-07

申请号：AU4490700

申请日：2000-04-25

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  OZLUTURK FATIH ,  REZNIK ALEXANDER

IPC: H04L27/227 ,  H04L27/233 ,  H04L27/38

Abstract: A system for estimating carrier offset includes includes a transmitter configured to transmit a quadrature modulated signal, and a receiver. The receiver includes an input configured to receive the quadrature modulated signal, a local oscillator configured to generate cosine and sine waves at a carrier frequency of the quadrature modulated signal, at least one cosine mixer configured to generate a carrier frequency demodulated output, at least one sine mixer configured to generate a carrier frequency demodulated output, a plurality of lowpass filters configured to filter the demodulated output of the cosine and sine mixers to produce filtered cosine and sine signal components, and a carrier offset detection processor to estimate a carrier offset between the carrier frequency and a local oscillator frequency based on the filtered output of the lowpass filters.

公开(公告)号：NO20084068L

公开(公告)日：2001-08-06

申请号：NO20084068

申请日：2008-09-24

Applicant: INTERDIGITAL TECH CORP

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

IPC: H04B1/707 ,  H04J3/00 ,  H04B1/7073 ,  H04B1/7093 ,  H04B1/7103 ,  H04B1/7105 ,  H04B7/00 ,  H04J3/17 ,  H04J11/00 ,  H04J13/00 ,  H04J13/16 ,  H04Q7/38

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 (16). Each communication burst has a unique channelization code and a midamble code (20). 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：CA2385082A1

公开(公告)日：2001-03-29

申请号：CA2385082

申请日：2000-02-02

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER ,  ZEIRA ARIELA ,  LUBECKI TIMOTHY J

IPC: H04B1/707

Abstract: A multiuser detector that detects and decodes synchronous or asynchronous CD MA subchannels having different spreading factors with reduced computational complexity. The multiuser detector is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimiz e numeric operations. The system 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 in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel match ed filtering.

公开(公告)号：CA2587735C

公开(公告)日：2014-09-02

申请号：CA2587735

申请日：2005-11-21

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER ,  CARLTON ALAN GERALD ,  BRIANCON ALAIN CHARLES LOUIS ,  SHAH YOGENDRA C ,  CHITRAPU PRABHAKAR R

IPC: H04W12/08 ,  H04W12/02 ,  H04W16/30

Abstract: A method and system for securing wireless communications is disclosed. In on embodiment, different security policies are used based on the distance between a receiver and a transmitter, whereby data in the wireless communications can only be demodulated if received in particular trust zones. In another embodiment, a plurality of bit stream fragments are transmitted by a plurality of transmitters to a receiver located in an area where transmission patterns radiated by the transmitters intersect. Alternatively, the receiver performs a function on packet data units (PDUs) transmitted by the transmitters. In yet another embodiment, primary modulation points of a modulation points which can be demodulated only by a receiver that is within range of the transmitter. In yet another embodiment, a main waveform is transmitted which overlays a QPSK signal with hierarchical modulation (HM) having encoded descrambling information.

公开(公告)号：BRPI0719638A2

公开(公告)日：2014-01-07

申请号：BRPI0719638

申请日：2007-12-28

Applicant: INTERDIGITAL TECH CORP

Inventor： MARINIER PAUL ,  REZNIK ALEXANDER ,  TERRY STEPHEN E

IPC: H04W72/14

Abstract: A method for scheduling transmission allocations and and a wireless transmit/receive unit (WTRU) are disclosed. The WTRU sends control information and receives a non-persistent grant allocation, wherein the non-persistent grant allocation includes a determined grant limit, and wherein the determined grant limit is a pre-defined number of MAC-e packet data units.