公开(公告)号：WO2006055241A2

公开(公告)日：2006-05-26

申请号：PCT/US2005/039525

申请日：2005-11-01

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  KWAK, Jaeyoung ,  KOO, Chang-soo ,  OLESEN, Robert, Lind ,  BULTAN, Aykut ,  OZLUTURK, Fatih

Inventor： KWAK, Jaeyoung ,  KOO, Chang-soo ,  OLESEN, Robert, Lind ,  BULTAN, Aykut ,  OZLUTURK, Fatih

IPC: H04L1/02

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: 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.

Abstract translation: 一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC），空间复用（SM）和波束形成的方法和装置。 该系统包括具有多个发射天线的发射机和具有多个接收天线的接收机。 发射机产生至少一个数据流和多个空间流。 所生成的空间流的数量基于发射天线的数量和接收天线的数量。 发射机根据SFBC，SM和波束形成中的至少一个确定传输方案。 发射机根据所选择的传输方案向接收机发送数据流中的数据。

公开(公告)号：WO2004082308A2

公开(公告)日：2004-09-23

申请号：PCT/US2004/007640

申请日：2004-03-12

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  KWAK, Jaeyoung ,  DICK, Stephen, G.

Inventor： KWAK, Jaeyoung ,  DICK, Stephen, G.

IPC: H04Q

CPC classification number: H04B17/309 ,  H04B17/318 ,  H04B17/327 ,  H04B17/336 ,  H04B17/345

Abstract: A received channel power indicator (RCPI) value is used as a measure of the received RF power in the selected channel, measured at the antenna connector. This parameter is a measure by the PHY sublayer of the received RF power in the channel measured over the PLCP preamble and over the entire received frame. RCPI is a monotonically increasing, logarithmic function of the received power level defined in dBm.

Abstract translation: 接收到的信道功率指示符（RCPI）值用作在天线连接器测量的所选信道中接收的RF功率的量度。 该参数是由PHY子层测量通过PLCP前导码测量的信道中以及整个接收帧的测量。 RCPI是以dBm定义的接收功率电平的单调增加的对数函数。

公开(公告)号：WO2006020741A2

公开(公告)日：2006-02-23

申请号：PCT/US2005/028487

申请日：2005-08-11

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  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: H04K1/10

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 ,  Y02B70/30 ,  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：WO2004019159A2

公开(公告)日：2004-03-04

申请号：PCT/US2003/025555

申请日：2003-08-15

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KWAK, Jaeyoung ,  HAIM, John, W. ,  ZEIRA, Ariela ,  PAN, Jung-Lin

IPC: G06F

CPC classification number: H04B1/71052 ,  H04B2201/70707

Abstract: K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the extended and approximated system and covariance matrices are determined by prime factor algorithm - fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.

Abstract translation: K个数据信号或脉冲串以码分多址通信格式通过共享频谱发送。 组合信号在共享频谱上被接收和采样，作为多个接收的矢量版本。 组合信号包括K个发送的数据信号。 产生多个系统矩阵和使用K个数据信号的代码和估计的脉冲响应的相关协方差矩阵。 每个系统矩阵对应于接收到的矢量版本。 系统和协方差矩阵被扩展和近似为块循环矩阵。 每个扩展和近似系统和协方差矩阵的对角矩阵由素数因子算法 - 快速傅立叶变换（PFA-FFT）确定，而不分割矩阵。 收到的矢量版本被扩展。 采用对角矩阵和扩展接收向量版本的乘积。 通过PFA-FFT对乘积的结果执行逆块离散傅里叶变换，以产生K个数据信号的估计数据。

公开(公告)号：WO2006052423A2

公开(公告)日：2006-05-18

申请号：PCT/US2005/037998

申请日：2005-10-20

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  KWAK, Jaeyoung ,  GRIECO, Donald, M. ,  PAN, Jung-Lin ,  ZEIRA, Ariela

Inventor： KWAK, Jaeyoung ,  GRIECO, Donald, M. ,  PAN, Jung-Lin ,  ZEIRA, Ariela

IPC: H04B7/00

CPC classification number: H04B1/7103 ,  H04B1/70735 ,  H04B17/327 ,  H04B2201/70701

Abstract: A method and apparatus for estimating channelization codes in a wireless transmit/receive unit (WTRU) using blind code detection (BCD). A WTRU receives communication bursts and detects a midamble in the received burst. A candidate code list is generated in accordance with the detected midamble. The candidate code list includes channelization codes intended for both the intended WTRU and other WTRUs. Active channelization codes among the codes in the candidate list are identified, and the identified codes are forwarded to a multi-user detector (MUD). The present invention resolves SF ambiguity in the downlink of TSM. Since the orthogonal variable spreading factor code maintains the orthogonality between codes of different SF, SFs of other WTRUs follow the SF of the intended WTRU. Moreover, since the data for other WTRUs is not used in symbol processing after MUD, the performance of MUD for the intended WTRU is preserved with the SF ambiguity of other WTRUs.

Abstract translation: 一种使用盲代码检测（BCD）估计无线发射/接收单元（WTRU）中的信道化码的方法和装置。 WTRU接收通信突发并检测接收到的突发中的中间码。 根据检测到的中间码产生候选码列表。 候选代码表包括旨在用于预期的WTRU和其他WTRU的信道化码。 识别候选列表中的代码之间的主动信道化代码，并将所识别的代码转发到多用户检测器（MUD）。 本发明解决了TSM下行链路中的SF模糊性。 由于正交可变扩频因子码维持不同SF的码之间的正交性，其他WTRU的SF遵循预期的WTRU的SF。 此外，由于在MUD之后的其他WTRU的数据不用于符号处理，所以对于预定的WTRU的MUD的性能被保留在其他WTRU的SF模糊度上。

公开(公告)号：WO2005125068A2

公开(公告)日：2005-12-29

申请号：PCT/US2005/018961

申请日：2005-05-31

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION ,  PAN, Jung-Lin ,  KWAK, Jaeyoung ,  GRIECO, Donald, M.

Inventor： PAN, Jung-Lin ,  KWAK, Jaeyoung ,  GRIECO, Donald, M.

IPC: H04J3/00

CPC classification number: H04J13/0044 ,  H04B1/7105

Abstract: A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a parent code is identified for each group of detected codes. A matrix A is constructed and joint detection is performed using the identified parent codes. Data symbols of the detected codes are obtained from the data symbols of the identified parent codes.

Abstract translation: 公开了用于减少无线通信系统中接收机处的多用户处理的方法和装置。 检测到的代码根据信道脉冲响应进行分组，并为每组检测到的代码识别父代码。 构建矩阵A，并使用所识别的父代码执行联合检测。 检测到的代码的数据符号从所识别的母代码的数据符号获得。

公开(公告)号：WO2004010573A1

公开(公告)日：2004-01-29

申请号：PCT/US2003/022652

申请日：2003-07-18

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KWAK, Jaeyoung ,  PAN, Jung-Lin ,  ZEIRA, Ariela

IPC: H03D1/04

CPC classification number: H04B1/71055 ,  H04B1/7093 ,  H04B1/71072 ,  H04B7/0854 ,  H04L1/06 ,  H04L25/0212 ,  H04L25/0226 ,  H04L25/03305 ,  H04L25/03318

Abstract: A plurality of data signals are received over an antenna array having a plurality of antenna elements. The data singals are transmitted over a shared spectrum in a wireless communication system. A signal having each of the data signals is received over each antenna element. The plurality of data signals are grouped into a plurality of groups. The received signals of the antenna elements are matched filtered (70) for a first group of the plurality of groups, producing a matched filtered result. Data is jointly detected of the first group using the matched filtered result. An interference correction signal is constructed (76) using the detected data for each antenna element. The interference cancelled result is subtracted (92) from the received signal of each antenna element, producing an interference cancelled result for each antenna element. Data is successively detected for remaining groups using the interference cancelled result for each antenna element.

Abstract translation: 通过具有多个天线元件的天线阵列接收多个数据信号。 在无线通信系统中通过共享频谱传输数据信号。 在每个天线元件上接收具有每个数据信号的信号。 多个数据信号被分组成多个组。 天线元件的接收信号对于多个组中的第一组进行匹配滤波（70），产生匹配的滤波结果。 使用匹配的过滤结果联合检测第一组的数据。 使用每个天线元件的检测数据构造干扰校正信号（76）。 从每个天线元件的接收信号中减去干扰消除结果（92），产生每个天线元件的干扰消除结果。 使用每个天线元件的干扰消除结果对剩余组连续检测数据。

公开(公告)号：EP1815616A2

公开(公告)日：2007-08-08

申请号：EP05815506.0

申请日：2005-10-20

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KWAK, Jaeyoung ,  GRIECO, Donald, M. ,  PAN, Kyle, Jung-Lin. ,  ZEIRA, Ariela

IPC: H04B7/216 ,  H04L1/00 ,  H03D1/04 ,  H04J3/00

CPC classification number: H04B1/7103 ,  H04B1/70735 ,  H04B17/327 ,  H04B2201/70701

Abstract: A method and apparatus for estimating channelization codes in a wireless transmit/receive unit (WTRU) using blind code detection (BCD). A WTRU receives communication bursts and detects a midamble [302] in the received burst. A candidate code list [304] is generated in accordance with the detected midamble. The candidate code list includes channelization codes intended for both the intended WTRU and other WTRUs [304]. Active channelization codes among the codes in the candidate list are identified, and the identified codes are forward to a multi-user detector (MUD) [308], The present invention resolves SF ambiguity in the download of TSM. Since the orthogonal variable spreading factor code maintains the orthogonal between codes of different SF, SFs of other WTRUs follow the SF of the inteneded WTRU. Moreover, since the data for other WTRUs is not used in symbol processing after MUD, the performance of MUD of the intended WTRU is preserved with the SF ambiguity of othter WTRUs.

公开(公告)号：EP1552405A2

公开(公告)日：2005-07-13

申请号：EP03793067.4

申请日：2003-08-15

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KWAK, Jaeyoung ,  HAIM, John, W. ,  ZEIRA, Ariela ,  PAN, Jung-Lin

IPC: G06F15/00

CPC classification number: H04B1/71052 ,  H04B2201/70707

Abstract: K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the extended and approximated system and covariance matrices are determined by prime factor algorithm - fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.

公开(公告)号：EP1693977A2

公开(公告)日：2006-08-23

申请号：EP06113770.9

申请日：2004-03-12

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KWAK, Jaeyoung ,  DICK, Stephen, G.

IPC: H04B17/00

CPC classification number: H04B17/309 ,  H04B17/318 ,  H04B17/327 ,  H04B17/336 ,  H04B17/345

Abstract: A received channel power indicator (RCPI) value is used as a measure of the received RF power in the selected channel, measured at the antenna connector. This parameter is a measure by the PHY sublayer of the received RF power in the channel measured over the PLCP preamble and over the entire received frame. RCPI is a monotonically increasing, logarithmic function of the received power level defined in dBm.

Abstract translation: 接收的信道功率指示符（RCPI）值被用作在天线连接器处测量的所选信道中接收到的RF功率的度量。 该参数是由PHY子层测量的通过PLCP前导码和整个接收帧测量的信道中接收到的RF功率。 RCPI是以dBm定义的接收功率电平的单调增加的对数函数。