公开(公告)号：WO2007084303A3

公开(公告)日：2008-03-06

申请号：PCT/US2007000639

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP ,  PAN JUNG-LIN ,  YANG RUI

Inventor： PAN JUNG-LIN ,  YANG RUI

IPC: H04L1/06 ,  H04B1/707 ,  H04B7/08 ,  H04L25/03

CPC classification number: H04L1/0631 ,  H04B1/7103 ,  H04B7/0619 ,  H04B7/0684 ,  H04B7/0837 ,  H04B7/0891 ,  H04L25/03019 ,  H04L25/03114 ,  H04L2025/03426

Abstract: A method and apparatus for supporting transmit diversity are disclosed. A wireless communication system includes a transmitter having a plurality of transmit antennas and a receiver having at least one receive antenna. The transmitter transmits different pilot code sequences via each of the transmit antennas. The receiver comprises at least one receive antenna for receiving signals transmitted from the transmitter and a plurality of equalizers. Each equalizer is locked onto one of the transmit antennas and processes received samples using a corresponding pilot code sequence. The equalizer may treat user data and pilot code sequence transmitted via all other transmit antennas except the corresponding transmit antenna as interference or alternatively may cancel pilot or pilot and data in parallel or successively.

Abstract translation: 公开了一种用于支持发射分集的方法和装置。 无线通信系统包括具有多个发射天线的发射机和具有至少一个接收天线的接收机。 发射机经由每个发射天线发送不同的导频码序列。 接收机包括用于接收从发射机发射的信号和多个均衡器的至少一个接收天线。 每个均衡器被锁定在一个发射天线上，并使用相应的导频码序列来处理接收的采样。 均衡器可以将除了相应的发射天线之外的所有其他发射天线发送的用户数据和导频码序列作为干扰，或者可以并行或连续地取消导频或导频和数据。

公开(公告)号：WO2004047461A3

公开(公告)日：2004-08-12

申请号：PCT/US0336851

申请日：2003-11-17

Applicant: INTERDIGITAL TECH CORP

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

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

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).

Abstract translation: 系统，组件和方法在无线通信系统中提供FEC解码，其中在处理接收的无线通信信号（12）中使用信噪比估计来缩放由解调器（14）捕获的信息。 优选的无线发射单元（WRTU）具有信道速率估计装置（23），其被配置为处理用于特定通信信道的所接收的通信信号并产生信道变化率估计。 WRTU的信噪比（SNR）估计装置（16）被配置为基于计算出的每个观察窗口使用的样本数的计算的接收信号的样本数的观测窗口来产生SNR估计（25 ）作为由信道速率估计装置（23）产生的信道变化率估计的函数。

公开(公告)号：WO03104925A2

公开(公告)日：2003-12-18

申请号：PCT/US0317857

申请日：2003-06-05

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  YANG RUI

IPC: H03M1/18 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H03G7/06 ,  H03M1/12 ,  H04B17/40 ,  G06F

CPC classification number: H03G7/06 ,  H03G3/001 ,  H03M1/1235

Abstract: An analog/digital gain control device avoid some of the requirements associated with the nature of a closed-loop AGC circuits and which meets the remaining requirements without much difficulty uses an analog to digital conversion method that increases the number of effective ADC bits by compressing the baseband input analog signal using a logarithmic circuit. After the compressed analog signal is converted into a digital signal, a digital anti-log process or look-up table (LUT) is used to expand the digital signal back to the original linear scale. The word size of the output of the anti-log process is larger than the input word size due to the nature of the anti-log function. To reduce the word size of the digital signal an open loop normalization technique can be applied.

Abstract translation: 模拟/数字增益控制装置避免了与闭环AGC电路的性质相关的一些要求，并且满足剩余的要求，而没有太多困难，使用模数转换方法，通过压缩有效ADC位数来增加有效ADC位的数量 基带输入模拟信号使用对数电路。 在将压缩的模拟信号转换为数字信号之后，使用数字反对数处理或查找表（LUT）将数字信号扩展回原始的线性刻度。 由于反日志功能的性质，反日志进程输出的字大小大于输入字大小。 为了减小数字信号的字大小，可以应用开环归一化技术。

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：WO2005006568A2

公开(公告)日：2005-01-20

申请号：PCT/US2004018593

申请日：2004-06-10

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J ,  STERNBERG GREGORY S ,  YANG RUI

Inventor： PIETRASKI PHILIP J ,  STERNBERG GREGORY S ,  YANG RUI

IPC: H04B1/10 ,  H04L1/00 ,  H04L1/20 ,  H04B

CPC classification number: H04L1/20 ,  H04B1/1027 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/1607

Abstract: A method for biasing signal-to-interference ratio (SIR) to generate channel quality indicator (CQI) includes measuring the packet error rate (PER) of a received signal and comparing the PER to a to the target PER to generate a correction term. The correction term is combined with the SIR estimation of a reference channel to generate a CQI. The CQI is reported to a transmitter to adjust signal configurations, such as code rate, modulation type, number of codes, power offset.

Abstract translation: 用于偏置信号干扰比（SIR）以产生信道质量指示符（CQI）的方法包括测量接收信号的分组错误率（PER），并将PER与a与目标PER进行比较以产生校正项。 校正项与参考信道的SIR估计相结合以产生CQI。 将CQI报告给发射机以调整信号配置，例如码率，调制类型，码数，功率偏移。

公开(公告)号：WO2006121721A2

公开(公告)日：2006-11-16

申请号：PCT/US2006016935

申请日：2006-05-02

Applicant: INTERDIGITAL TECH CORP ,  LI BIN ,  YANG RUI ,  STERNBERG GREGORY S

Inventor： LI BIN ,  YANG RUI ,  STERNBERG GREGORY S

IPC: H04L27/06

CPC classification number: H04L1/20 ,  H04B2201/70701

Abstract: The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A receiver receives a DPCH transmission and a despreader despreads the received DPCH transmission. A selector selects pilot symbols in the despread DPCH transmission. A signal power estimator estimates signal power based on the pilot symbols, and a noise power estimator estimates noise power based on the received DPCH transmission. A SNR estimator estimates an SNR based on the signal power estimation and the noise power estimation. The noise power estimator may calculate the noise power estimation either based only on pilot symbols or based on both pilot symbols and non-pilot symbols. The DPCH transmission may be transmitted using more than one antenna for transmit diversity.

Abstract translation: 本发明涉及一种用于在无线通信系统中基于专用物理信道（DPCH）导频符号估计信噪比（SNR）的方法和装置。 接收机接收DPCH传输，并且去扩展器对所接收的DPCH传输进行解扩。 选择器在解扩DPCH传输中选择导频符号。 信号功率估计器基于导频符号估计信号功率，并且噪声功率估计器基于所接收的DPCH传输来估计噪声功率。 SNR估计器基于信号功率估计和噪声功率估计来估计SNR。 噪声功率估计器可以仅基于导频符号或基于导频符号和非导频符号来计算噪声功率估计。 可以使用多于一个的天线发射DPCH传输用于发射分集。

公开(公告)号：WO2005053206A3

公开(公告)日：2006-03-23

申请号：PCT/US2004038611

申请日：2004-11-19

Applicant: INTERDIGITAL TECH CORP ,  OLESEN ROBERT LIND ,  REZNIK ALEXANDER ,  PIETRASKI PHILIP J ,  YANG RUI

Inventor： OLESEN ROBERT LIND ,  REZNIK ALEXANDER ,  PIETRASKI PHILIP J ,  YANG RUI

IPC: H04L20060101 ,  H04L1/02 ,  H04L27/26

CPC classification number: H04L27/2647 ,  H04B7/0845 ,  H04B7/086

Abstract: A wireless communication apparatus (200) which uses fast Fourier transforms (FFTs) in an orthogonal frequency division multiplexing (OFDM) receiver (250) which incorporates a beam space antenna array (205). The beam space antenna array may be implemented with a Butler matrix array. The beam space antenna array may be a circular array, vertical array, or a combination of both circular and vertical arrays, for providing the desired angular antenna coverage. In one embodiment, the antenna array is optimized because the FFTs are linear invariant transform operators (210), whereby the order of operations in the OFDM receiver can be interchanged.

Abstract translation: 一种在包含波束空间天线阵列（205）的正交频分复用（OFDM）接收机（250）中使用快速傅里叶变换（FFT）的无线通信装置（200）。 波束空间天线阵列可以用Butler矩阵阵列来实现。 波束空间天线阵列可以是圆形阵列，垂直阵列或圆形阵列和垂直阵列的组合，用于提供所需的角度天线覆盖。 在一个实施例中，天线阵列被优化，因为FFT是线性不变变换运算符（210），由此OFDM接收机中的操作顺序可以互换。

公开(公告)号：WO2005048031A3

公开(公告)日：2005-12-22

申请号：PCT/US2004034789

申请日：2004-10-21

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J ,  STERNBERG GREGORY S ,  YANG RUI ,  LI BIN

Inventor： PIETRASKI PHILIP J ,  STERNBERG GREGORY S ,  YANG RUI ,  LI BIN

IPC: H04L1/00 ,  H04L1/20 ,  H04L25/02 ,  H04L5/12

CPC classification number: H04L1/0026 ,  H04L1/20 ,  H04L25/0202

Abstract: A method and apparatus for estimating and reporting the quality of a wireless communication channel between a wireless transmit/receive unit (WTRU) and a Node-B. A modulated signal is received from the Node-B over the communication channel and a channel estimation is performed on the modulated signal to provide a channel estimate. In one embodiment, the modulated signal is demodulated based on the channel estimate to provide a demodulated signal and a signal-to-interference (SIR) estimate based on the demodulated signal is obtained. The quality of the communication channel is estimated based on at least the SIR estimate. In an alternate embodiment, a SIR estimate based on the channel estimate is obtained. The quality of the communication channel is estimated based on the SIR estimate and additional information including at least one of delay spread, transmit power and WTRU velocity information.

Abstract translation: 一种用于估计和报告无线发射/接收单元（WTRU）和节点B之间的无线通信信道的质量的方法和装置。 通过通信信道从节点B接收调制信号，并对调制信号执行信道估计以提供信道估计。 在一个实施例中，基于信道估计来解调调制信号以提供解调信号，并且获得基于解调信号的信号干扰（SIR）估计。 至少基于SIR估计来估计通信信道的质量。 在替代实施例中，获得基于信道估计的SIR估计。 基于SIR估计和包括延迟扩展，发射功率和WTRU速度信息中的至少一个的附加信息来估计通信信道的质量。

公开(公告)号：WO2005004338A2

公开(公告)日：2005-01-13

申请号：PCT/US2004020427

申请日：2004-06-24

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

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

IPC: H03D1/04 ,  H04B20060101 ,  H04B1/707 ,  H04L25/03 ,  H04B

CPC classification number: H04L25/03305 ,  H04B1/71055 ,  H04L25/03331 ,  H04L25/03993

Abstract: The present invention has many aspects. One aspect of the invention is to perform equalization using a sliding window approach. A second aspect reuses information derived for each window for use by a subsequent window. A third aspect utilizes a discrete Fourier transform based approach for the equalization. A fourth aspect relates to handling oversampling of the received signals and channel responses. A fifth aspect relates to handling multiple reception antennas. A sixth embodiment relates to handling both oversampling and multiple reception antennas.

Abstract translation: 本发明具有许多方面。 本发明的一个方面是使用滑动窗口方法进行均衡。 第二个方面重用为每个窗口导出的信息，供后续窗口使用。 第三方面利用基于离散傅立叶变换的均衡方法。 第四方面涉及处理接收信号和信道响应的过采样。 第五方面涉及处理多个接收天线。 第六实施例涉及处理过采样和多个接收天线。