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    MODIFIED BLOCK SPACE TIME TRANSMIT DIVERSITY ENCODER
    32.
    发明申请
    MODIFIED BLOCK SPACE TIME TRANSMIT DIVERSITY ENCODER 审中-公开
    变换块空间时间传输多样性编码器

    公开(公告)号：WO0249236A3

    公开(公告)日：2003-01-16

    申请号：PCT/US0146602

    申请日：2001-12-05

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KIM YOUNGLOK ,  ZEIRA ARIELA

    IPC: H04B1/707 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L25/02 ,  H04L7/06

    CPC classification number: H04L25/0202 ,  H04B1/707 ,  H04B7/0669 ,  H04L1/0041 ,  H04L1/0618 ,  H04L1/0643

    Abstract: The present invention is a system and method for transmitting data symbols in a CDMA communication system including a transmitter having an antenna array and a receiver. The system generates a first and second data field of symbols, then encodes them to produce complex conjugates of the respective symbols. A first communication burst including the first and second data fields, which are separated by a midamble, over a first antenna, and a second communication burst produced using said complex conjugates of said first and second data fields, which are separated by a midamble, over a second antenna are then transmitted by the transmitter. The receiver then receives and decodes the first and second communication bursts to recover the first and second data fields.

    Abstract translation: 本发明是一种用于在包括具有天线阵列和接收机的发射机的CDMA通信系统中发送数据符号的系统和方法。 系统产生符号的第一和第二数据字段，然后对它们进行编码以产生各个符号的复共轭。 包括第一和第二数据字段的第一通信突发，其通过第一天线由中间码分隔开，并且使用由中间码分隔的所述第一和第二数据字段的复共轭产生的第二通信突发， 然后由发射机发射第二天线。 然后，接收器接收并解码第一和第二通信突发，以恢复第一和第二数据字段。

    SUPPORT OF MULTIUSER DETECTION IN THE DOWNLINK
    34.
    发明申请
    SUPPORT OF MULTIUSER DETECTION IN THE DOWNLINK 审中-公开
    支持多媒体检测在下行链路

    公开(公告)号：WO0158041A2

    公开(公告)日：2001-08-09

    申请号：PCT/US0103380

    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

    CPC classification number: H04B1/7103 ,  H04B1/707 ,  H04B1/70735 ,  H04B1/7105 ,  H04B2001/70935 ,  H04B2201/70701 ,  H04B2201/70709 ,  H04J13/00 ,  H04J13/16

    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. Each communication burst has a unique channelization code and a midamble code. 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.

    Abstract translation: 使用码分多址的无线时分双工通信系统具有基站和用户设备。 系统使用通信突发进行通信。 每个通信突发具有唯一的信道化码和中间码。 每个中间码代码被映射到一组至少一个信道化码。 对于要在基站的时隙中发送的每个通信突发，确定映射到该突发的信道化码的中间码。 在时隙中生成和发送通信突发。 每个突发具有确定的其信道化码的中间码代码。 用户设备接收突发并确定每个接收到的中间码。 用户设备部分地基于确定每个接收到的中间码的结果来确定所发送的通信脉冲串的信道化码。

    ADAPTIVE ALGORITHM FOR A CHOLESKY APPROXIMATION
    38.
    发明公开
    ADAPTIVE ALGORITHM FOR A CHOLESKY APPROXIMATION 审中-公开
    ADAPTIVER算法FÜREINE CHOLESKY-APPRIMIMATION

    公开(公告)号：EP1510020A4

    公开(公告)日：2005-04-27

    申请号：EP03755408

    申请日：2003-05-19

    Applicant: INTERDIGITAL TECH CORP

    Inventor： KIM YOUNGLOK ,  ZEIRA ARIELA

    IPC: G06F17/16 ,  H04B1/7097 ,  H04B1/707

    CPC classification number: H04B1/7105 ,  G06F17/16

    Abstract: Data is to be detected in a wireless communication system. A plurality of communication signals (r) are received. A solution for estimating data (d) of the received communication signals (r) is modeled using a linear system (34) requiring a matrix inversion. Columns or rows (A, and B) of an approximate Cholesky factor are determined. A difference between the determined columns or rows (A, and B) is determined. If the determined difference is less than a threshold, subsequent columns or rows are determined by previous determined columns or rows. The data (d) of received communication signals (r) is estimated using the approximate Cholesky factor.

    Abstract translation: 数据将在无线通信系统中检测。 多个通信信号（r）被接收。 使用需要矩阵求逆的线性系统（34）对用于估计接收到的通信信号（r）的数据（d）的解决方案进行建模。 确定近似Cholesky因子的列或行（A和B）。 确定所确定的列或行（A和B）之间的差异。 如果确定的差值小于阈值，则后续的列或行由先前确定的列或行确定。 接收到的通信信号（r）的数据（d）使用近似Cholesky因子来估计。

    METHOD AND APPARATUS FOR DETERMINING SIGNAL-TO-INTERFERENCE RATIO WITH REDUCED BIAS EFFECT
    39.
    发明公开
    METHOD AND APPARATUS FOR DETERMINING SIGNAL-TO-INTERFERENCE RATIO WITH REDUCED BIAS EFFECT 审中-公开
    用于确定信号/ STOERUNGSVERHAELTNISSES的方法和装置减少偏差的影响

    公开(公告)号：EP1563623A4

    公开(公告)日：2011-10-12

    申请号：EP03783174

    申请日：2003-11-05

    Applicant: INTERDIGITAL TECH CORP

    Inventor： SHIN SUNG-HYUK ,  ZEIRA ARIELA

    IPC: H04B17/00 ,  G06F19/00 ,  H04B20060101 ,  H04B1/10 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00 ,  H04L29/02

    CPC classification number: H04B1/1027 ,  H04B17/336

    Abstract: A signal-to-interference ratio (SIR) estimator for estimating a SIR of baseband signals which are received and processed by a data demodulator to provide demodulated signals to the SIR estimator. The SIR estimator receives the demodulated symbols from the data demodulator and estimates the average signal power of the demodulated symbols as a function of a median based average power value m d and a mean based average power value m e of the demodulated symbols for each quadrant of a quadrature phase shift keying (QPSK) constellation. The function is used to determine a minimum value m between m d and m e . The SIR estimator estimates the average effective interference power of the demodulated symbols and calculates the SIR by dividing the estimated average signal power of the demodulated symbols by the estimated average effective interference power of the demodulated symbols. The SIR estimator reduces bias effects on SIR estimation.

    Abstract translation: 的信号与干扰比（SIR）估计器，用于估计被接收和处理由数据解调器提供的解调信号提供给SIR估计器的基带信号的SIR。 SIR估计器接收来自数据解调器的解调的符号并估计解调的符号的平均信号功率为基于中值的函数平均功率值m ð和基于平均平均功率值m 对于正交相移键控（QPSK）星座图的每个象限解调符号电子。 该功能用于确定性地挖掘米之间ð且m ë最小值米。 将SIR估计器估计解调符号的平均有效干扰功率以及通过解调符号的估计平均有效干扰功率除以解调的符号的估计平均信号功率计算的SIR。 SIR估计减少了对SIR估计偏差的影响。

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