公开(公告)号：AT311698T

公开(公告)日：2005-12-15

申请号：AT02731342

申请日：2002-04-15

Applicant: INTERDIGITAL TECH CORP

Inventor： BULTAN AYKUT ,  GRIECO DONALD

IPC: H04B1/7085 ,  H04B1/709 ,  H04L7/02 ,  H04B1/707

公开(公告)号：AR046371A1

公开(公告)日：2005-12-07

申请号：ARP040104106

申请日：2004-11-08

Applicant: INTERDIGITAL TECH CORP

Inventor： BULTAN AYKUT ,  GRIECO DONALD M ,  DENNEAN CHARLES ,  PAN JUNG-LIN

IPC: H04B1/707 ,  H04B7/216 ,  H04B7/26 ,  H04L20060101 ,  H04L7/04 ,  H04W56/00 ,  H04L27/227 ,  H04Q7/22

Abstract: Un método y sistema para sincronización de enlace ascendente (UL) de una transmisión de enlace ascendente desde una pluralidad de unidades inalámbricas de transmisión/recepción (WTRUs) a un Nodo B en un sistema de acceso múltiple por división de código (CDMA). Un Nodo B recibe una transmisión que incluye una secuencia de sincronización UL (SYNC_UL) de una WTRU. Un muestreador muestrea la transmisión a una velocidad de muestreo mayor que un chip rate. Las muestras son sometidas a down- sampling y se detecta la secuencia SYNC_UL a una velocidad menor. Se determina una primera ubicación de trayectoria significativa de la secuencia SYNC_UL detectada y, en base a la primera ubicación de trayectoria significativa, se determina una ubicación de trayectoria significativa final. La ubicación de trayectoria significativa final es cuantificada y se transmite UpPCHPOS a la WTRU para ajustar un timing de transmisión UL.

公开(公告)号：NO20052000A

公开(公告)日：2005-06-22

申请号：NO20052000

申请日：2005-04-25

Applicant: INTERDIGITAL TECH CORP

Inventor： GRIECO DONALD M ,  BULTAN AYKUT

IPC: H04B1/707 ,  H04L7/00 ,  H04L7/02 ,  H04L25/02 ,  G06F7/38 ,  H04L27/06

CPC classification number: H04L7/0029 ,  H04B1/70756 ,  H04B1/7077 ,  H04B1/7117 ,  H04L7/0004 ,  H04L25/0202

公开(公告)号：MY154510A

公开(公告)日：2015-06-30

申请号：MYPI20090274

申请日：2005-08-11

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  ZEIRA ELDAD ,  KOO CHANG-SOO ,  OZLUTURK FATIH M ,  HUANG YUEJIN ,  PASAD KALPENDU R

IPC: H04B7/02 ,  H04J99/00

Abstract: THE PRESENT INVENTION IS RELATED TO A METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING (SFBC) IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) WIRELESS COMMUNICATION SYSTEM. THE PRESENT INVENTION IS APPLICABLE TO BOTH A CLOSED LOOP MODE AND AN OPEN LOOP MODE. IN THE CLOSED LOOP MODE, POWER LOADING AND EIGEN- BEAMFORMING (122) ARE PERFORMED BASED ON CHANNEL STATE INFORMATION (CSI). A CHANNEL CODED DATA STREAM IS MULTIPLEXED INTO TWO OR MORE DATA STREAMS. POWER LOADING IS PERFORMED BASED ON THE CS1 ON EACH OF THE MULTIPLEXED DATA STREAMS. SFBC ENCODING IS PERFORMED ON THE DATA STREAMS FOR EACH OF THE PAIRED SUBCARRIES. THEN, EIGEN-BEAMFORMING IS PERFORMED BASED ON THE CSI TO DISTRIBUTE EIGENBEAMS TO MULTIPLE TRANSMIT ANTENNAS (226). THE POWER LOADING MAY BE PERFORMED ON TWO OR MORE SFBC ENCODIN BLOCKS OR ON EACH EIGENMODES. ADDITIONALLY, THE POWER LOADING MAY BE PERFORMED ACROSS SUBCARRIES OR SUBCARRIER GROUPS FOR WEAK EIGENMODES.

公开(公告)号：AU2012241132B2

公开(公告)日：2014-10-02

申请号：AU2012241132

申请日：2012-10-16

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  KOO CHANG-SOO ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  OZLUTURK FATIH

IPC: H04B7/02 ,  H04J99/00 ,  H04K1/10 ,  H04L1/02 ,  H04L27/00

Abstract: A method and apparatus for combining space-frequency block coding (SFBC), spatial multiplexing (SM) and beam-forming in a multiple-input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) system. The system includes a transmitter with a plurality of transmit antennas and a receiver with a plurality of receive antennas. The transmitter generates at least one data stream and a plurality of spatial streams. The number of generated spatial streams is based on the number of the transmit antennas and the number of the receive antennas. The transmitter determines a transmission scheme in accordance with at least one of the SFBC, SM and beam forming. The transmitter transmits data in the data stream to the receiver based on the selected transmission scheme.

公开(公告)号：CA2587846C

公开(公告)日：2013-12-17

申请号：CA2587846

申请日：2005-11-01

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  KOO CHANG-SOO ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  OZLUTURK FATIH

IPC: H04J99/00 ,  H04K1/10 ,  H04B7/02 ,  H04L1/02 ,  H04L27/00

Abstract: A method and apparatus for combining space-frequency block coding (SFBC), spatial multiplexing (SM) and beamforming in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. The system includes a transmitter with a plurality of transmit antennas and a receiver with a plurality of receive antennas. The transmitter generates at least one data stream and a plurality of spatial streams. The number of generated spatial streams is based on the number of the transmit antennas and the number of the receive antennas. The transmitter determines a transmission scheme in accordance with at least one of SFBC, SM and beam forming. The transmitter transmits data in the data stream to the receiver based on the selected transmission scheme.

公开(公告)号：AU2009208166B2

公开(公告)日：2012-08-02

申请号：AU2009208166

申请日：2009-08-14

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  KOO CHANG-SOO ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  OZLUTURK FATIH M

IPC: H04B7/02 ,  H04J99/00 ,  H04K1/10 ,  H04L1/02 ,  H04L27/00

Abstract: A method and apparatus for combining space-frequency block coding (SFBC), spatial multiplexing (SM) and beam-forming in a multiple-input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) system. The system includes a transmitter with a plurality of transmit antennas and a receiver with a plurality of receive antennas. The transmitter generates at least one data stream and a plurality of spatial streams. The number of generated spatial streams is based on the number of the transmit antennas and the number of the receive antennas. The transmitter determines a transmission scheme in accordance with at least one of the SFBC, SM and beam forming. The transmitter transmits data in the data stream to the receiver based on the selected transmission scheme. u(j CC.) " C)D coo CIO)

公开(公告)号：AT527794T

公开(公告)日：2011-10-15

申请号：AT10150446

申请日：2005-08-11

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  ZEIRA ELDAD ,  KOO CHANG-SOO ,  OZLUTURK FATIH ,  HUANG YUEJIN ,  PASAD KALPENDU R

IPC: H04J99/00 ,  H04L27/08 ,  H04B7/06 ,  H04L1/06

Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

公开(公告)号：DE602005019062D1

公开(公告)日：2010-03-11

申请号：DE602005019062

申请日：2005-08-11

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  OLESEN ROBERT LIND ,  BULTAN AYKUT ,  ZEIRA ELDAD ,  KOO CHANG-SOO ,  OZLUTURK FATIH ,  HUANG YUEJIN ,  PASAD KALPENDU R

IPC: H04J99/00 ,  H04L27/08

Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

公开(公告)号：AR066342A2

公开(公告)日：2009-08-12

申请号：ARP080101805

申请日：2008-04-29

Applicant: INTERDIGITAL TECH CORP

Inventor： BULTAN AYKUT ,  HUANG YUEJIN ,  ZEIRA ELDAD ,  KOO CHANG-SOO ,  OLESEN ROBERT L ,  PASAD KALPENDU R ,  OZLUTURK FATIH M ,  KWAK JAEYOUNG

IPC: H04J99/00 ,  H04L1/06 ,  H04B1/04

Abstract: Un método para implementar codificacion por bloques en espacio y frecuencia (SFBC) para transmisiones multiplex por division de frecuencia ortogonal (OFDM) de entradas multiples/salidas multiples (MIMO), método que comprende: realizar unacodificacion de canal en al menos dos corrientes de datos; recibir informacion del estado del canal (CSI) de un canal MIMO; calcular energía del canal para modos propios del canal MIMO; calcular relaciones de interferencia y de senal-ruido armonicas(SNIRs) para los modos propios en base a la energía del canal calculada; calcular separacion de las SNIRs armonicas; determinar una velocidad de datos que pueda ser soportada en base a la CSI; agrupar modos propios en un orden de la energía delcanal de los modos propios; distribuir velocidades de bits entre los modos propios en base a la separacion de las SNIRs; mapear pares de corrientes de datos codificados a pares de modos propios para la transmision. También se divulga un aparato paraimplementar la codificacion por bloques en espacio y frecuencia (SFBC) para transmisiones multiplex por division de frecuencia ortogonal (OFDM) de entradas multiples/salidas multiples (MIMO) que emplea al método.