公开(公告)号：WO2006020400A3

公开(公告)日：2006-12-07

申请号：PCT/US2005026670

申请日：2005-07-27

Applicant: INTERDIGITAL TECH CORP ,  KOO CHANG-SOO ,  ZHANG GUODONG ,  OLESEN ROBERT LIND ,  TSAI YINGMING ,  HUANG YUEJIN

Inventor： KOO CHANG-SOO ,  ZHANG GUODONG ,  OLESEN ROBERT LIND ,  TSAI YINGMING ,  HUANG YUEJIN

IPC: H04J11/00 ,  H04W52/42

CPC classification number: H04L5/0044 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0016 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/006 ,  H04W52/42

Abstract: A method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system are disclosed. The entire sub-channels are divided into a plurality of groups. A channel quality indicator (CQI) is generated for each group based on channel quality status in each group, and communication parameters are adjusted in accordance with the CQI.

Abstract translation: 公开了一种用于正交频分复用（OFDM）无线通信系统中的链路自适应的方法和系统。 整个子信道被分成多个组。 基于每个组中的信道质量状态为每个组生成信道质量指示符（CQI），并且根据CQI调整通信参数。

公开(公告)号：WO2005069807A3

公开(公告)日：2006-10-12

申请号：PCT/US2005001038

申请日：2005-01-12

Applicant: INTERDIGITAL TECH CORP ,  OLESEN ROBERT LIND ,  CHITRAPU PRABHAKAR R ,  CHIANG BING A ,  HERSCHAFT RICHARD DAN ,  HOFFMANN JOHN ERICH ,  SHIN SUNG-HYUK ,  REZNIK ALEXANDER ,  KAEWELL JOHN DAVID JR

Inventor： OLESEN ROBERT LIND ,  CHITRAPU PRABHAKAR R ,  CHIANG BING A ,  HERSCHAFT RICHARD DAN ,  HOFFMANN JOHN ERICH ,  SHIN SUNG-HYUK ,  REZNIK ALEXANDER ,  KAEWELL JOHN DAVID JR

IPC: H04L9/00 ,  H04K1/00 ,  H04L29/06 ,  H04M1/66 ,  H04M1/68 ,  H04W12/00 ,  H04W12/02 ,  H04W12/06

CPC classification number: H04L63/12 ,  H04L63/08 ,  H04L2463/101 ,  H04L2463/103 ,  H04W12/02 ,  H04W12/10

Abstract: At least one user data stream is layer 2/3 processed [Fig.3. ref. 24], physical layer processed [Fig. 3, ref. 26] and radio frequency processed [Fig. 3, ref. 28]. A watermark/signature is embedded [Fig. 3, ref. 30] at least one of layer 2/3, [Fig. 3, ref. 24] physical layer [Fig. 3, ref. 24] or radio frequency [Fig. 3, ref.28], producing an embedded wireless communication. The embedded wireless communication is wirelessly transferred [Fig. 3, ref. 36]. The embedded wireless communication is received [Fig. 3, ref. 34] and the watermark/signature is extracted [Fig. 3, ref. 34] from the embedded wireless communication.

Abstract translation: 至少一个用户数据流是第2/3层处理的[图3]。 REF。 24]，物理层处理[图。 3，参考文献 26]和射频处理[ 3，参考文献 28。 嵌入水印/签名。 3，参考文献 30]层2/3中的至少一个， 3，参考文献 24]物理层[ 3，参考文献 24]或射频[ 3，参考文献28]，产生嵌入式无线通信。 嵌入式无线通信被无线传输[ 3，参考文献 36。 接收嵌入式无线通信[ 3，参考文献 34]，并且提取水印/签名。 3，参考文献 34]从嵌入式无线通信。

公开(公告)号：WO2006020741A3

公开(公告)日：2006-06-01

申请号：PCT/US2005028487

申请日：2005-08-11

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

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

CPC classification number: H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02D50/10

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.

Abstract translation: 本发明涉及一种用于在正交频分复用（OFDM）无线通信系统中实现空间频率块编码（SFBC）的方法和装置。 本发明适用于闭环模式和开环模式。 在闭环模式中，基于信道状态信息（CSI）执行功率负载和特征波束形成。 信道编码数据流被多路复用为两个或多个数据流。 基于每个复用数据流上的CSI执行功率加载。 对每个配对子载波的数据流执行SFBC编码。 然后，基于CSI执行特征波束形成，以将本征束分布到多个发射天线。 功率加载可以在两个或更多个SFBC编码块上或在每个本征模上执行。 另外，对于弱本征模式，可以跨子载波或子载波组执行功率负载。

公开(公告)号：EP1869854A4

公开(公告)日：2008-06-18

申请号：EP06740039

申请日：2006-03-30

Applicant: INTERDIGITAL TECH CORP

Inventor： KOO CHANG-SOO ,  OLESEN ROBERT LIND

IPC: H04J99/00 ,  H04L27/04 ,  H04B7/02

CPC classification number: H04B7/0417 ,  G06F17/16 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0663 ,  H04L25/0208 ,  H04L25/0248 ,  H04L27/2647

Abstract: A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas (202). A Heπnitian matrix A=HHH or A=HHn is created (204). A Jacobi process is cyclically performed on the matrix A to obtain Q and DA matrixes such that A=QDAQH (206). DA is a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off-diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off -diagonal elements of the matrix after the real part diagonalization. U, V and DH matrixes of H matrix are then calculated from the Q and DA matrices. DH is a diagonal matrix comprising singular values of the H matrix (208).

公开(公告)号：EP1568141A4

公开(公告)日：2008-08-27

申请号：EP03781981

申请日：2003-11-17

Applicant: INTERDIGITAL TECH CORP

Inventor： STERNBERG GREGORY S ,  YANG RUI ,  PIETRASKI PHILIP J ,  OLESEN ROBERT LIND

IPC: H03M13/45 ,  H03M13/35 ,  H04L1/00 ,  H04L1/18 ,  H04L1/20 ,  H04L25/06

CPC classification number: H04L25/067 ,  H03M13/35 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/1812 ,  H04L1/20 ,  H04L25/0222

Abstract: A system, components and methods provide FEC decoding in a wireless communication system in which signal to noise ratio estimation is used for scaling (18) information captured by a demodulator (14) in processing received wireless communication signals (12). A preferred wireless transmit unit (WRTU) has a channel rate estimation device (23) configured to process the received communication signals for the particular communication channel and to produce channel change rate estimates. A signal to noise ratio (SNR) estimation device (16) of the WRTU is configured to produce SNR estimates based on observation windows of a calculated number of samples of the received signal where the number of samples used for each observation window is calculated (25) as a function of the channel change rate estimates produced by the channel rate estimation device (23).

公开(公告)号：EP1779571A4

公开(公告)日：2007-12-19

申请号：EP05781896

申请日：2005-07-27

Applicant: INTERDIGITAL TECH CORP

Inventor： KOO CHANG-SOO ,  ZHANG GUODONG ,  OLESEN ROBERT LIND ,  TSAI YINGMING ,  HUANG YUEJIN

IPC: H04J11/00 ,  H04W52/42

CPC classification number: H04L5/0044 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0016 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/006 ,  H04W52/42

Abstract: A method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system are disclosed. The entire sub-channels are divided into a plurality of groups. A channel quality indicator (CQI) is generated for each group based on channel quality status in each group, and communication parameters are adjusted in accordance with the CQI.

公开(公告)号：EP1779554A4

公开(公告)日：2011-08-03

申请号：EP05776297

申请日：2005-07-21

Applicant: INTERDIGITAL TECH CORP

Inventor： KOO CHANG-SOO ,  OLESEN ROBERT LIND

IPC: H04B7/216 ,  H04J99/00 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04B7/0417 ,  H04B17/336 ,  H04L1/0002 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0064 ,  H04L27/2601 ,  Y02D50/10

Abstract: A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are measured and compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent back to the transmitting transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained. At the receiver, the target QoS metric and reference data rate are adjusted accordingly. This process is repeated for each data frame of each sub-carrier group.

Abstract translation: 一种用于优化正交频分复用（OFDM）系统的系统容量的方法和装置使用与多输入多输出（MIMO）天线那样。 在接收机中，服务的目标质量（QoS）量度和基准数据设定速率。 目标QoS度量可以被设置为预定值，并且/或者可以与通过缓慢外环控制处理器相对于分组差错率（PER）动态调整。 接收信号的服务质量进行比较，以所述目标QoS。 根据比较结果，接收机基因费率其被发送到发射机的信道质量指示符（CQI）所有。 CQI是一个或两个比特指示符，其指示到发射器停用，调节或保持特定的子载波，所以每个发射天线的子载波的组，或者在所有子载波组的数据传输速率发送天线。 在发射机中，其反式mitted数据速率被禁用，调节或维护。

公开(公告)号：EP1815630A4

公开(公告)日：2007-11-28

申请号：EP05848783

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 ,  H04B7/06 ,  H04L1/02 ,  H04L1/04 ,  H04L1/06 ,  H04L27/00

CPC classification number: H04L1/0606 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/04 ,  H04L5/0007 ,  H04L25/0248 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2647

Abstract: The invention relates to a method and a transmitter for transmitting data using multiple-input multiple-output, MIMO, orthogonal frequency division multiplexing, OFDM, the method comprising: a transmitter generating at least one input data stream; the transmitter generating a plurality of spatial streams; the transmitter determining a transmission coding scheme, and processing the input data stream in accordance with the transmission coding scheme to generate at least two spatial streams, the transmission coding scheme being one of spatial multiplexing, SM, without frequency diversity, FD, wherein one data symbol is sent per one sub-carrier for each spatial stream; and the transmitter transmitting the at least two spatial streams via the generated spatial streams.

公开(公告)号：EP1779623A4

公开(公告)日：2007-10-31

申请号：EP05785474

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

CPC classification number: H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02D50/10

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.

Abstract translation: 本发明涉及一种用于在正交频分复用（OFDM）无线通信系统中实现空间频率块编码（SFBC）的方法和装置。本发明适用于这两种闭环模式和开环模式。 在闭环模式中，功率负载和自波束形成是基于信道状态信息（CSI）进行。 一种信道编码后的数据流被多路复用成两个或多个数据流。 电力负荷是基于CSI在每个复用数据流的执行。 SFBC编码执行对每个成对的副载波的数据流。 然后，自波束形成执行基于CSI分发自束多个发射天线。 功率负载可以在两个或更多个SFBC编码数据块或每个本征模式来执行。 另外，功率负载可以跨越子载波或子载波组来执行用于弱本征模式。

公开(公告)号：EP1704694A4

公开(公告)日：2007-08-01

申请号：EP05705615

申请日：2005-01-12

Applicant: INTERDIGITAL TECH CORP

Inventor： OLESEN ROBERT LIND ,  CHITRAPU PRABHAKAR R ,  CHIANG BING A ,  HERSCHAFT RICHARD DAN ,  HOFFMAM JOHN ERICH ,  SHIN SUNG-HYUK ,  REZNIK ALEXANDER ,  KAEWELL JOHN DAVID JR

IPC: H04L9/00 ,  H04K1/00 ,  H04L29/06 ,  H04M1/66 ,  H04M1/68 ,  H04W12/00 ,  H04W12/02 ,  H04W12/06

CPC classification number: H04L63/12 ,  H04L63/08 ,  H04L2463/101 ,  H04L2463/103 ,  H04W12/02 ,  H04W12/10

Abstract: At least one user data stream is layer 2/3 processed [Fig.3. ref. 24], physical layer processed [Fig. 3, ref. 26] and radio frequency processed [Fig. 3, ref. 28]. A watermark/signature is embedded [Fig. 3, ref. 30] at least one of layer 2/3, [Fig. 3, ref. 24] physical layer [Fig. 3, ref. 24] or radio frequency [Fig. 3, ref.28], producing an embedded wireless communication. The embedded wireless communication is wirelessly transferred [Fig. 3, ref. 36]. The embedded wireless communication is received [Fig. 3, ref. 34] and the watermark/signature is extracted [Fig. 3, ref. 34] from the embedded wireless communication.