公开(公告)号：WO0205441A2

公开(公告)日：2002-01-17

申请号：PCT/US0121470

申请日：2001-07-06

Applicant: INTERDIGITAL TECH CORP

Inventor： PAN JUNG-LIN ,  ZEIRA ARIELA

IPC: H04L5/16 ,  H04B1/707 ,  H04B1/7103 ,  H04J3/00 ,  H04J13/00 ,  H04J13/16 ,  H04W16/10 ,  H04W16/14 ,  H04W52/00 ,  H04W72/08 ,  H04W74/04 ,  H04B

CPC classification number: H04W72/082 ,  H04B1/7103 ,  H04B2201/709709 ,  H04J13/16 ,  H04W16/14 ,  H04W24/10 ,  H04W52/0216 ,  H04W52/0219 ,  H04W72/0446 ,  H04W72/0466 ,  H04W74/04 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/40

Abstract: Resource units are assigned within a cell of a wireless time division duplex communication system using code division multiple access. Each resource units is associated with a time slot and a code. For selected ones of the cell's resource units, the code interference level is measured during that unit's time slot and using that unit's code. The code interference level is compared to a threshold to determine whether that unit has an acceptable code interference level. Resource units are assigned to communications out of the unit's having acceptable interference levels.

Abstract translation: 在使用码分多址的无线时分双工通信系统的小区内分配资源单元。 每个资源单元与时隙和代码相关联。 对于单元格的资源单元中选定的单元的资源单元，在该单元的时隙中测量代码干扰级别，并使用该单元的代码。 将码干扰电平与阈值进行比较，以确定该单元是否具有可接受的码干扰电平。 资源单位被分配给具有可接受干扰水平的设备中的通信。

公开(公告)号：WO2006020283A3

公开(公告)日：2007-05-10

申请号：PCT/US2005025540

申请日：2005-07-19

Applicant: INTERDIGITAL TECH CORP ,  HACKETT WILLIAM C ,  DIFAZIO ROBERT A ,  HEPLER EDWARD L ,  REZNIK ALEXANDER ,  CASTOR DOUGLAS R ,  ZEIRA ARIELA ,  GAZDA ROBERT G ,  KAEWELL JOHN DAVID JR

Inventor： HACKETT WILLIAM C ,  DIFAZIO ROBERT A ,  HEPLER EDWARD L ,  REZNIK ALEXANDER ,  CASTOR DOUGLAS R ,  ZEIRA ARIELA ,  GAZDA ROBERT G ,  KAEWELL JOHN DAVID JR

IPC: H04B7/216 ,  H03H7/30 ,  H04B1/00 ,  H04B1/38 ,  H04B1/707 ,  H04L12/66 ,  H04W88/02

CPC classification number: H04B1/707 ,  H04B1/406 ,  H04B2201/70707 ,  H04B2201/709727 ,  H04L2025/03509 ,  H04W88/02

Abstract: A wireless transmit/receive unit (WTRU 250, Figure 1) for processing code division multiple access (CDMA) signals. The WTRU includes modem host (300) and a high speed downlink packet access (HSDPA) co-processor (400) , which communicate over a plurality of customizable interfaces. The modem host operates in accordance with third generation partnership project (3GPP) Release 4 (R4) standards, and the HSDPA co-processor enhances the wireless communication capabilities of the WTRU as a whole such that the WTRU operates in accordance with 3GPP Release 5 (S3) standards.

Abstract translation: 用于处理码分多址（CDMA）信号的无线发射/接收单元（WTRU 250，图1）。 WTRU包括调制解调器主机（300）和通过多个可定制接口进行通信的高速下行链路分组接入（HSDPA）协处理器（400）。 调制解调器主机根据第三代合作伙伴计划（3GPP）版本4（R4）标准进行操作，并且HSDPA协处理器整体上增强了WTRU的无线通信能力，使得WTRU根据3GPP版本5（ S3）标准。

公开(公告)号：WO2006052407A3

公开(公告)日：2007-04-12

申请号：PCT/US2005037656

申请日：2005-10-18

Applicant: INTERDIGITAL TECH CORP ,  ZEIRA ARIELA ,  PIETRASKI PHILIP J ,  PAN JUNG-LIN ,  BELURI MIHAELA ,  YANG RUI

Inventor： ZEIRA ARIELA ,  PIETRASKI PHILIP J ,  PAN JUNG-LIN ,  BELURI MIHAELA ,  YANG RUI

IPC: H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC classification number: H04L25/03044 ,  H04B1/7097 ,  H04B7/0854 ,  H04L2025/03375 ,  H04L2025/03426 ,  H04L2025/03477 ,  H04L2025/03509 ,  H04L2025/03617

Abstract: A receiver which includes at least one equalizer filter and a tap coefficients generator for implementing receive diversity. The equalizer filter processes a signal derived from signals received by a plurality of antennas. In one embodiment, sample data streams from the antennas are merged into one sample data stream. The merged sample data stream is processed by a single extended equalizer filter, whereby filter coefficients are adjusted in accordance with a joint error signal. A filter coefficient correction term used by the equalizer filter is generated by the tap coefficients generator using a normalized least mean square (NLMS) algorithm. In another embodiment, a plurality of equalizer filters are utilized, whereby each equalizer receives a sample data stream from a specific one of the antennas. In yet another embodiment, the sample data streams are combined after being processed by a plurality of matched filters based on respective estimated channel impulse responses.

Abstract translation: 包括至少一个均衡器滤波器和用于实现接收分集的抽头系数发生器的接收机。 均衡器滤波器处理由多个天线接收的信号导出的信号。 在一个实施例中，来自天线的采样数据流被合并成一个采样数据流。 合并的采样数据流由单个扩展均衡器滤波器处理，由此根据联合误差信号调整滤波器系数。 由均衡器滤波器使用的滤波器系数校正项由抽头系数发生器使用归一化最小均方（NLMS）算法生成。 在另一个实施例中，利用多个均衡器滤波器，由此每个均衡器从特定天线接收采样数据流。 在另一个实施例中，基于相应的估计的信道脉冲响应，在由多个匹配滤波器处理之后组合采样数据流。

公开(公告)号：WO2004079927A3

公开(公告)日：2005-03-24

申请号：PCT/US2004006162

申请日：2004-03-02

Applicant: INTERDIGITAL TECH CORP ,  YANG RUI ,  LI BIN ,  REZNIK ALEXANDER ,  ZEIRA ARIELA

Inventor： YANG RUI ,  LI BIN ,  REZNIK ALEXANDER ,  ZEIRA ARIELA

IPC: H04B1/38 ,  H04L25/02 ,  H04L25/03 ,  H04B1/69

CPC classification number: H04L25/03057 ,  H04L25/0212 ,  H04L25/0242 ,  H04L25/03292 ,  H04L2025/03605

Abstract: A sliding window based data estimation is performed. An error is introduced in the data estimation to the communication modeling the relationship between the transmitted and received signals. To compensate for an error in the estimated data, the data that was estimated in a previous sliding window step (58) or terms that would otherwise be truncated as noise are used. These techniques (50, 52, 54, 56. 58, 60, 62 and 64) allow for data to be truncated prior to further processing reducing the data of the window.

Abstract translation: 执行基于滑动窗口的数据估计。 在数据估计中引入了错误，以通信建模发送和接收信号之间的关系。 为了补偿估计数据中的错误，使用在先前滑动窗口步骤（58）中估计的数据或否则将被截断为噪声的项目。 这些技术（50,52,54,58,56,62和64）允许在进一步处理之前对数据进行截断以减少窗口的数据。

公开(公告)号：WO2004045085A3

公开(公告)日：2005-03-10

申请号：PCT/US0335320

申请日：2003-11-05

Applicant: INTERDIGITAL TECH CORP

Inventor： SHIN SUNG-HYUK ,  ZEIRA ARIELA

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

CPC classification number: H04B1/1027 ,  H04B17/336

Abstract: A method and apparatus for performing signal-to-interference ratio (SIR) estimation in wireless communications, using a demodulator (505) output, such as a Rake output or a multi-user detection (MUD) receiver output. The demodulator (505) output is fed into a SIR estimator (400) to perform the SIR estimation based on estimated average signal power (610) and estimated average effective interference power (615). The estimated average signal power (615) is based on a minimum value function used for determining a minimum value between a median based average power value and a mean based average power value. The SIR estimator (400) reduces bias effects on SIR estimation, and is applicable to BPSK and QPSK modulation schemes, as well as higher order modulation schemes such as 8-PSK and 16-QAM. A correction term is used as a function of the mean and median values to further mitigate the bias effect.

Abstract translation: 一种使用解调器（505）输出（诸如Rake输出或多用户检测（MUD）接收机输出）在无线通信中执行信号干扰比（SIR）估计的方法和装置。 解调器（505）输出被馈送到SIR估计器（400），以基于估计的平均信号功率（610）和估计的平均有效干扰功率（615）来执行SIR估计。 估计的平均信号功率（615）基于用于确定基于中值的平均功率值和平均功率值之间的最小值的最小值函数。 SIR估计器（400）降低对SIR估计的偏差影响，并且可应用于BPSK和QPSK调制方案以及诸如8-PSK和16-QAM的更高阶调制方案。 使用校正项作为平均值和中值的函数，以进一步减轻偏见效应。

公开(公告)号：WO0122610A9

公开(公告)日：2004-04-01

申请号：PCT/US0002621

申请日：2000-02-02

Applicant: INTERDIGITAL TECH CORP ,  REZNIK ALEXANDER ,  LUBECKI TIMOTHY J ,  ZEIRA ARIELA

Inventor： REZNIK ALEXANDER ,  LUBECKI TIMOTHY J ,  ZEIRA ARIELA

IPC: H04B1/707

CPC classification number: H04B1/7105 ,  H04B1/7093 ,  H04B1/71052 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A multiuser detector that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser detector is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The system and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.

Abstract translation: 一种多用户检测器，其检测并解码具有不同扩频因子的同步或异步CDMA子信道，降低了计算复杂度。 多用户检测器与使用Cholesky分解的ZF-BLE，MMSE，去相关检测器等兼容，以最小化数字运算。 系统和方法将表示各个用户的响应特性的系统传输响应矩阵的列排列成表示针对给定的接收数据块的多个匹配滤波器响应的总系统传输响应矩阵。 本发明结合Cholesky分解在并行匹配滤波之前减少了所需数学运算的数量。

公开(公告)号：WO2004004151A2

公开(公告)日：2004-01-08

申请号：PCT/US0319858

申请日：2003-06-23

Applicant: INTERDIGITAL TECH CORP

Inventor： KIM YOUNGLOK ,  PAN JUNG-LIN ,  ZEIRA ARIELA ,  REZNIK ALEXANDER

IPC: H04B1/69

CPC classification number: H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

Abstract translation: 接收到多个通信信号。 每个通信信号都有一个相关的代码。 至少两个通信信号具有不同的扩频因子。 相关的代码有一个扰码周期。 整个系统响应矩阵有块。 每个块具有一个长度为M的维度和一个长度为M的部分长度和每个通信的扩展因子。 M基于扰码周期。 使用构建的系统响应矩阵来接收所接收的多个通信信号的数据。

公开(公告)号：WO03032502A3

公开(公告)日：2003-10-02

申请号：PCT/US0231742

申请日：2002-10-04

Applicant: INTERDIGITAL TECH CORP

Inventor： SHIN SUNG-HYUK ,  OZLUTURK FATIH ,  ZEIRA ARIELA ,  KOO CHANG-SOO

IPC: H04B7/155 ,  H04B7/005 ,  H04B7/26 ,  H04W52/22 ,  H04W52/24 ,  H04W52/36 ,  H04B7/185 ,  H04B7/216

CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/221 ,  H04W52/226 ,  H04W52/242 ,  H04W52/243 ,  H04W52/248 ,  H04W52/36

Abstract: A transmitting station (20) receives a transmit power command and a reference signal. The transmit power command (28) indicates an increase or decrease in transmission power for the transmitting station. A received power level of the reference signal is measured and the measured reference signal received power level is compared to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal. A size of a change in transmit power level is determined using the pathloss estimate. A transmission power level of the transmitting station is adjusted in response to the transmit power command in an amount of the determined change in size. A communication is transmitted at the adjusted transmission power level.

Abstract translation: 发射站（20）接收发射功率命令和参考信号。 发送功率指令（28）表示发送台的发送功率的增加或减少。 测量参考信号的接收功率电平，并将测量的参考信号接收功率电平与参考信号的发射功率电平进行比较，以产生参考信号的路径损耗估计。 使用路径损耗估计来确定发射功率电平变化的大小。 响应于所确定的大小变化量的发射功率命令来调整发射台的发射功率电平。 以调整的发送功率电平发送通信。

公开(公告)号：WO03071693A2

公开(公告)日：2003-08-28

申请号：PCT/US0305237

申请日：2003-02-20

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ARIELA ,  ZEIRA ELDAD

IPC: H04B1/707 ,  H04J13/16 ,  H04W52/00 ,  H04W88/18 ,  H04B

CPC classification number: H04W88/181 ,  H04B2201/709709 ,  H04J13/16 ,  H04W52/346 ,  H04W72/00 ,  H04W72/0466

Abstract: The invention includes various approaches to assigning codes in wireless code division multiple access communication systems. The invention estimates the cross code correlation between codes to base the code assignment. One approach assigns codes having a high cross correlation to users having a low transmission power level. Another approach assigns code groups having a high cross correlation to a same coded composite transport channel. Another approach assigns codes using a cross correlation factor of each code to minimize a system noise rise. Another approach uses transmission or reception diversity to assign bad code groups to users having a different diversity relationship. Another approach uses a diversity factor and a cross code correlation factor to assign codes.

Abstract translation: 本发明包括在无线码分多址通信系统中分配码的各种方法。 本发明估计基于代码分配的代码之间的交叉码相关性。 一种方法将具有高互相关性的代码分配给具有低发射功率电平的用户。 另一种方法将具有高互相关性的代码组分配给相同的编码复合传输信道。 另一种方法使用每个代码的互相关因子分配代码以最小化系统噪声上升。 另一种方法使用发送或接收分集来向具有不同分集关系的用户分配不良代码组。 另一种方法使用分集因子和交叉码相关因子来分配代码。

公开(公告)号：WO03025513A3

公开(公告)日：2003-05-30

申请号：PCT/US0229553

申请日：2002-09-17

Applicant: INTERDIGITAL TECH CORP

Inventor： KIM YOUNGLOK ,  PAN JUNG-LIN ,  ZEIRA ARIELA

IPC: H04J3/00 ,  G06Q10/00 ,  H04B1/707 ,  H04L1/20 ,  H04L25/02 ,  H04J1/00

CPC classification number: H04L25/0224 ,  G06Q10/10 ,  H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/71057 ,  H04L1/20

Abstract: Method and apparatus for interference signal code power noise variance estimation employing a reduced number of samples utilizing the equation (15), where (14), where (I), where (I), where (12) and where (13). As an alternative, a recursive technique may be employed wherein the noise variance is estimated from the ignored coefficients of the estimated channel output and upgraded recursively as per the following: (II) where ĥi(j) are the channel estimates after the post processing and the noise variance estimates sigman-12, and the initial values of ĥi(j) are all zeros.

Abstract translation: （14），其中（I），其中（I），其中（12）和其中（13），使用减少数量的样本的干扰信号码功率噪声方差估计方法和装置。 作为替代，可以采用递归技术，其中根据所估计的信道输出的被忽略的系数估计噪声方差，并根据以下递归地升级：（II）其中，ĥi（j）是后处理后的信道估计， 噪声方差估计sigman-12，ĥi（j）的初始值都为零。