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    EFFICIENT JOINT DETECTION
    1.
    发明申请
    EFFICIENT JOINT DETECTION 审中-公开
    有效的联合检测

    公开(公告)号：WO2004019159A3

    公开(公告)日：2004-07-08

    申请号：PCT/US0325555

    申请日：2003-08-15

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KWAK JAEYOUNG ,  HAIM JOHN W ,  ZEIRA ARIELA ,  PAN JUNG-LIN

    IPC: H04B1/707 ,  H04J11/00 ,  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.

    Abstract translation: K个数据信号或突发以码分多址通信格式在共享频谱上传输。 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个传输的数据信号。 产生使用K个数据信号的代码和估计脉冲响应的多个系统矩阵和相关联的协方差矩阵。 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并近似为块循环矩阵。 每个扩展和近似系统以及协方差矩阵的对角矩阵由质量因子算法 - 快速傅里叶变换（PFA-FFT）确定，不需要对矩阵进行分割。 接收到的矢量版本被扩展。 采用对角矩阵和扩展接收矢量版本的乘积。 通过PFA-FFT对产物的结果执行逆块离散傅立叶变换以产生K个数据信号的估计数据。

    METHOD AND APPARATUS FOR REDUCING MULTI-USER PROCESSING IN WIRELESS COMMUNICATION SYSTEMS
    4.
    发明申请
    METHOD AND APPARATUS FOR REDUCING MULTI-USER PROCESSING IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
    用于在无线通信系统中减少多用户处理的方法和装置

    公开(公告)号：WO2005125068A3

    公开(公告)日：2006-04-27

    申请号：PCT/US2005018961

    申请日：2005-05-31

    Applicant: INTERDIGITAL TECH CORP ,  PAN JUNG-LIN ,  KWAK JAEYOUNG ,  GRIECO DONALD M

    Inventor： PAN JUNG-LIN ,  KWAK JAEYOUNG ,  GRIECO DONALD M

    IPC: H04J3/00 ,  H04J11/00

    CPC classification number: H04J13/0044 ,  H04B1/7105

    Abstract: A method and apparatus is disclosed for reducing multi-user processing at the receiver (22) in wireless communication systems. Detected codes (32) are grouped according to channel impulse response and a parent code (36) is identified for each group of detected codes. A matrix A (40) is constructed and joint detection (42) 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的接收机（22）处的多用户处理的方法和装置。 检测码（32）根据信道脉冲响应进行分组，并为每组检测到的码识别父代码（36）。 构建矩阵A（40），并使用所识别的母代码进行联合检测（42）。 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。

    METHOD AND APPARATUS FOR ESTIMATING CHANNELIZATION CODES IN A WIRELESS TRANSMIT/RECEIVE UNIT
    5.
    发明申请
    METHOD AND APPARATUS FOR ESTIMATING CHANNELIZATION CODES IN A WIRELESS TRANSMIT/RECEIVE UNIT 审中-公开
    在无线发射/接收单元中估计通道码的方法和装置

    公开(公告)号：WO2006052423A3

    公开(公告)日：2006-10-19

    申请号：PCT/US2005037998

    申请日：2005-10-20

    Applicant: INTERDIGITAL TECH CORP ,  KWAK JAEYOUNG ,  GRIECO DONALD M ,  PAN JUNG-LIN ,  ZEIRA ARIELA

    Inventor： KWAK JAEYOUNG ,  GRIECO DONALD M ,  PAN JUNG-LIN ,  ZEIRA ARIELA

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

    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.

    Abstract translation: 一种使用盲码检测（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继码[302]。 根据检测到的中间码产生候选码列表[304]。 候选码表包括旨在用于预期的WTRU和其他WTRU的信道化码[304]。 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）[308]。本发明解决了TSM下载中的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，所以其他WTRU的SF遵循被介入的WTRU的SF。 此外，由于在MUD之后的符号处理中没有使用其他WTRU的数据，所以预期的WTRU的MUD的性能被保留在具有少量WTRU的SF模糊度上。

    METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS COMMUNICATION SYSTEM
    8.
    发明公开
    METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS COMMUNICATION SYSTEM 有权
    方法和设备空间频率块编码在无线通信系统正交频分复用实现

    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。

    METHOD AND APPARATUS FOR ESTIMATING CHANNELIZATION CODES IN A WIRELESS TRANSMIT/RECEIVE UNIT
    10.
    发明公开
    METHOD AND APPARATUS FOR ESTIMATING CHANNELIZATION CODES IN A WIRELESS TRANSMIT/RECEIVE UNIT 审中-公开
    方法和装置估算码的窜流的无线传输/接收单元

    公开(公告)号：EP1815616A4

    公开(公告)日：2008-04-02

    申请号：EP05815506

    申请日：2005-10-20

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KWAK JAEYOUNG ,  GRIECO DONALD M ,  PAN KYLE JUNG-LIN ,  ZEIRA ARIELA

    IPC: H04B7/216 ,  H03D1/04 ,  H04J3/00 ,  H04J11/00 ,  H04L1/00

    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.

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